Method, device, equipment and medium for verifying durability of automobile suspension mounting portion

Abstract

This application discloses a method, apparatus, equipment, and medium for verifying the durability performance of automotive mount components. It constructs a universal durability performance verification bench system, based on which load calibration tests are conducted on a base vehicle model, establishing a load transfer database containing dynamic transfer characteristic data under various excitation conditions. Even with the target vehicle's mount not yet installed, initial load parameters for verification can be pre-determined through simulation calculations based on its design parameters, target durability conditions, and the aforementioned database. The bench is then configured and driven according to these parameters to conduct actual durability excitation tests on the target vehicle's mount component, acquiring test data. The data is then analyzed using a fatigue damage model, outputting cumulative damage and durability performance prediction results. This application can significantly improve the verification efficiency of mount component durability performance and reduce vehicle development cycle and costs. The technical solution of this application can be widely applied in the field of vehicle technology.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, apparatus, equipment and medium for verifying the durability performance of automotive suspension mounting components. Background Technology

[0002] With the acceleration of vehicle electrification and intelligentization, the requirements for vehicle powertrain structure, dynamic characteristics, and durability verification are undergoing profound changes. In particular, for pure electric vehicles characterized by high frequency and high torque, the load conditions borne by their suspensions are becoming increasingly complex, posing more stringent design and verification requirements for the structural durability performance of the suspension mounting components.

[0003] However, in the vehicle development process, the durability verification of the suspension mount remains a significant challenge, with a prominent conflict between verification cycle, cost, and accuracy. Traditional verification methods require the physical mounting of the suspension to be installed in the mounting unit, and the verification process is constrained by the development progress of the suspension, resulting in low efficiency in verifying the durability of the suspension mount and making it difficult to adapt to the market demands of diversified vehicle platforms and increasingly faster development pace. Summary of the Invention

[0004] This application provides a method, apparatus, equipment, and medium for verifying the durability performance of automotive mounting components, which can significantly improve the verification efficiency of mounting component durability performance and reduce vehicle development cycle and cost.

[0005] One aspect of this application provides a method for verifying the durability performance of an automotive mounting bracket, the method comprising: Construct a universal durability performance verification bench system; wherein the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, the adjustable clamp being used to adapt to the mounting geometry parameters of different vehicle models; Based on the durability performance verification bench system, load calibration tests are conducted on the suspension mounting parts of at least one base vehicle model to obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions. Based on the durability performance verification bench system, load calibration tests are conducted on the suspension mounting parts of at least one base vehicle model developed based on a preset platform to obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions. A load transmission database is constructed based on the dynamic transmission characteristic data. In the case where the suspension of the target vehicle is not actually installed, based on the suspension design parameters of the target vehicle, the target durability conditions, and the load transfer database, the initial load parameters for durability verification of the suspension mounting part of the target vehicle are determined by simulation calculation. Based on the initial load parameters, the durability performance verification bench system is configured and driven to conduct a durability excitation test on the suspension mounting part of the target vehicle model to obtain test data; Based on the test data, the cumulative damage degree of the suspension mounting part of the target vehicle is determined by a preset fatigue damage model, and the durability performance prediction result corresponding to the target vehicle is output according to the cumulative damage degree.

[0006] For example, in some embodiments, the load calibration test is performed on the suspension mounting part of at least one base vehicle model based on the durability performance verification bench system to obtain dynamic transmission characteristic data from the loading end to the suspension mounting part under various excitation conditions. The load calibration test is performed on the suspension mounting part of at least one base vehicle model developed based on a preset platform using the durability performance verification bench system to obtain dynamic transmission characteristic data from the loading end to the suspension mounting part under various excitation conditions, including: A contour base matching the mounting interface of the base vehicle is determined from the durability performance verification bench system, and the contour base is loaded onto the adjustable fixture. The durability performance verification bench system applies a preset excitation load spectrum containing multiple amplitudes and frequencies to the contour base. Based on the sensors installed at the suspension mounting part of the base vehicle, the actual response signal corresponding to the preset excitation load spectrum is collected. The dynamic transmission characteristic data is determined based on the actual response signal.

[0007] For example, in some embodiments, the step of determining the initial load parameters for durability verification of the suspension mounting portion of the target vehicle model through simulation calculation based on the suspension design parameters of the target vehicle model, the target durability condition, and the load transfer database includes: Obtain the virtual load spectrum of the target vehicle model under the target durability condition; Based on the suspension design parameters of the target vehicle model, a local structural finite element model is established; Based on the local structural finite element model and the load transfer database, the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part is determined; Based on the virtual load spectrum of the whole vehicle and the load transfer function, the initial load parameters for durability verification of the suspension mounting part of the target vehicle model are determined.

[0008] For example, in some embodiments, determining the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part based on the local structural finite element model and the load transfer database includes: Based on the local structural finite element model, a full-system dynamic simulation model including the adjustable clamp, the contour base, and the suspension mounting part of the target vehicle model is established; Based on the load transfer database, the parameters in the full system dynamics simulation model are calibrated and corrected. The target loading force and force attenuation rate from the loading end of the platform to the suspension mounting part are calculated using the full system dynamics simulation model. The load transfer function is determined based on the target loading force and the force attenuation rate.

[0009] For example, in some embodiments, configuring and driving the durability performance verification bench system to perform a durability excitation test on the suspension mounting part of the target vehicle model according to the initial load parameters, and obtaining test data, includes: According to the suspension design parameters of the target vehicle, adjust the lever arm length and loading point height of the adjustable clamp, and install the contour base that matches the mounting interface of the suspension of the target vehicle on the suspension mounting part of the target vehicle. A loading command is generated based on the initial load parameters. The durability performance verification bench system is driven to apply an excitation load to the contour base based on the loading command, and strain response data corresponding to the excitation load is collected. The strain response data is compared with the expected response data corresponding to the initial load parameters to generate an error signal; Based on the error signal, the loading command is adjusted using a PID algorithm; The test data are obtained by collecting the excitation load and strain response data during the durability excitation test.

[0010] For example, in some embodiments, determining the cumulative damage degree of the suspension mounting portion of the target vehicle model based on the test data using a preset fatigue damage model includes: Based on the test data, determine the stress time history data experienced by the suspension mounting part during the test; The stress time history data is processed by rainflow counting to obtain the actual number of cycles of the suspension mounting part under different stress levels. The actual number of cycles under each stress level is input into the preset fatigue damage model for calculation to obtain the cumulative damage degree.

[0011] For example, in some embodiments, the step of outputting the durability performance prediction result corresponding to the target vehicle model based on the cumulative damage degree includes: The cumulative damage level is compared with a preset threshold. If the cumulative damage is less than or equal to the preset threshold, the durability performance prediction result corresponding to the target vehicle model is determined to be passed. If the cumulative damage exceeds the preset threshold, the durability performance prediction result for the target vehicle model is determined to be unsuccessful.

[0012] On the other hand, embodiments of this application provide a device for verifying the durability performance of an automotive mounting system, the device comprising: A building unit is used to build a universal durability performance verification bench system; wherein, the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, and the adjustable clamp is used to adapt to the mounting geometry parameters of different vehicle models. The calibration unit is used to perform load calibration tests on the suspension mounting parts of at least one base vehicle model based on the durability performance verification bench system, obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions, and construct a load transmission database based on the dynamic transmission characteristic data. The simulation unit is used to determine the initial load parameters for durability verification of the suspension mounting part of the target vehicle in the state where the suspension of the target vehicle is not actually installed, based on the suspension design parameters of the target vehicle, the target durability conditions, and the load transfer database. The test unit is configured to configure and drive the durability performance verification bench system to conduct a durability excitation test on the suspension mounting part of the target vehicle according to the initial load parameters, and obtain test data; The processing unit is used to determine the cumulative damage degree of the suspension mounting part of the target vehicle model based on the test data and through a preset fatigue damage model, and output the durability performance prediction result corresponding to the target vehicle model according to the cumulative damage degree.

[0013] On the other hand, embodiments of this application provide an electronic device, including a processor and a memory; The memory is used to store computer programs; The processor executes the computer program to implement the aforementioned method for verifying the durability of automotive mounting components.

[0014] On the other hand, embodiments of this application provide a computer-readable storage medium storing a computer program that is executed by a processor to implement the aforementioned method for verifying the durability performance of an automotive suspension mount.

[0015] On the other hand, embodiments of this application also provide a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor of a computer device reads the computer program from the computer-readable storage medium and executes the computer program, causing the computer device to perform the aforementioned method for verifying the durability performance of an automotive mounting unit.

[0016] The embodiments of this application include at least the following beneficial effects: This application provides a method, apparatus, equipment, and medium for verifying the durability performance of automotive mounting components. This application constructs a universal durability performance verification bench system, which includes adjustable clamps and replaceable contoured bases, allowing one system to be adapted to different vehicle models. In use, load calibration tests are conducted on a base vehicle model developed based on a preset platform using this system, establishing a load transfer database containing dynamic transfer characteristic data corresponding to the preset platform under various excitation conditions. In the uninstalled state of the target vehicle's mounting components, based on its design parameters, target durability conditions, and the aforementioned database, the initial load parameters for verification can be predetermined through simulation calculations. The bench is then configured and driven according to these parameters to conduct actual durability excitation tests on the target vehicle's mounting components, acquiring test data. Then, the data is analyzed using a fatigue damage model, outputting cumulative damage and durability performance prediction results. This application enables independent and efficient verification of the durability performance of the suspension mounting unit in the early stage by constructing a general platform system and load transfer database. This effectively eliminates the dependence on physical suspension samples, significantly improves the verification efficiency of the suspension mounting unit's durability performance, and reduces the vehicle development cycle and cost. Attached Figure Description

[0017] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0018] Figure 1 This is a system architecture diagram of the method for verifying the durability performance of an automotive mounting component provided in the embodiments of this application. Figure 2 This is a flowchart illustrating a method for verifying the durability of an automotive mounting component provided in an embodiment of this application. Figure 3This is a schematic diagram of an adjustable clamp and contour base provided in the embodiments of this application; Figure 4 This is a schematic diagram of an adjustable clamp and a contour base installed on a suspension mounting part, as provided in an embodiment of this application. Figure 5 This is a structural block diagram of a device for verifying the durability performance of an automotive mounting component, as provided in an embodiment of this application. Figure 6 This is a structural block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] It is understood that the terms “first,” “second,” etc., used in this application may be used to describe various concepts herein, but unless otherwise stated, these concepts are not limited by these terms. These terms are used only to distinguish one concept from another.

[0021] As used in this application, the terms "at least one", "multiple", "each", "any", etc., "at least one" includes one, two or more, "multiple" includes two or more, "each" refers to each of the corresponding multiples, and "any" refers to any one of the multiples.

[0022] With the acceleration of vehicle electrification and intelligentization, the requirements for vehicle powertrain structure, dynamic characteristics, and durability verification are undergoing profound changes. In particular, for pure electric vehicles characterized by high frequency and high torque, the load conditions borne by their suspensions are becoming increasingly complex, posing more stringent design and verification requirements for the structural durability performance of the suspension mounting components.

[0023] However, in the vehicle development process, the durability verification of the suspension mount remains a significant challenge, with a prominent conflict between verification cycle, cost, and accuracy. Traditional verification methods require the physical mounting of the suspension to be installed in the mounting unit, and the verification process is constrained by the development progress of the suspension, resulting in low efficiency in verifying the durability of the suspension mount and making it difficult to adapt to the market demands of diversified vehicle platforms and increasingly faster development pace.

[0024] In view of this, this application provides a method, apparatus, equipment, and medium for verifying the durability performance of automotive mounting components. This application constructs a universal durability performance verification bench system, which includes adjustable clamps and replaceable contoured bases, allowing one system to adapt to different vehicle models. In use, load calibration tests are conducted on a base vehicle model developed based on a preset platform using this system, establishing a load transfer database containing dynamic transfer characteristic data corresponding to the preset platform under various excitation conditions. Even with the target vehicle's mounting components not yet installed, load calibration tests are conducted on the base vehicle model using this system, establishing a load transfer database containing dynamic transfer characteristic data under various excitation conditions. Even with the target vehicle's mounting components not yet installed, initial load parameters for verification can be predetermined through simulation calculations based on its design parameters, target durability conditions, and the aforementioned database. The bench is then configured and driven according to these parameters to conduct actual durability excitation tests on the target vehicle's mounting components, acquiring test data. The data is then analyzed using a fatigue damage model, outputting cumulative damage and durability performance prediction results. This application enables independent and efficient verification of the durability performance of the suspension mounting unit in the early stage by constructing a general platform system and load transfer database. This effectively eliminates the dependence on physical suspension samples, significantly improves the verification efficiency of the suspension mounting unit's durability performance, and reduces the vehicle development cycle and cost.

[0025] System architecture and scenario description used in the embodiments of this application Please refer to Figure 1 , Figure 1 The diagram shows the system architecture of a method for verifying the durability of an automotive mounting system according to an embodiment of this application. It includes a terminal device 140, an Internet connection 130, a gateway 120, a backend server 110, etc.

[0026] In this embodiment, the terminal device 140 may be a dedicated computing and control system deployed in a vehicle durability performance verification laboratory or R&D center. Its function is to execute the predictive verification process for the durability performance of the suspension mounting section as described in this application. It typically integrates a load transfer database management module, a combined simulation calculation engine, a bench control command generation unit, a real-time data closed-loop processing module, and a fatigue damage assessment and result visualization module, etc.

[0027] For example, the terminal device 140 can be directly connected to devices such as the adjustable fixture servo driver, high-frequency loading mechanism (electro-hydraulic servo actuator), and multi-channel force / strain / acceleration sensor in the durability performance verification bench system via an industrial bus or dedicated data interface. This allows for real-time acquisition of dynamic transfer characteristic data and suspension mounting response data during load calibration and durability excitation tests, and the issuance of configuration and control commands for fixture parameters and loading spectra. Simultaneously, the terminal device 140 can access the Internet 130 via gateway 120 to interact with the backend server 110, accessing historical load databases and standard material fatigue characteristic libraries stored in the cloud, or utilizing high-performance computing resources in the cloud for complex simulation model solving and optimization. This application does not impose any limitations on this.

[0028] Backend server 110 refers to a computer system that can provide certain services to terminal device 140. Compared with ordinary terminal device 140, backend server 110 has higher requirements in terms of stability, security, and performance. Backend server 110 can be a single high-performance computer in a network platform, a cluster of multiple high-performance computers, a portion of a single high-performance computer (e.g., a virtual machine), or a combination of portions of multiple high-performance computers (e.g., virtual machines).

[0029] Gateway 120, also known as an internetwork connector or protocol converter, is a computer system or device that acts as a translator, enabling network interconnection at the transport layer. It bridges the gap between two systems using different communication protocols, data formats, languages, or even completely different architectures. Gateways can also provide filtering and security functions. Messages sent from terminal device 140 to backend server 110 are forwarded to the corresponding backend server 110 via gateway 120. Messages sent from backend server 110 to terminal device 140 are also forwarded to the corresponding terminal device 140 via gateway 120.

[0030] The backend server 110 can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms.

[0031] The method for verifying the durability of automotive mounting components provided in this application embodiment can be executed independently on the terminal device 140 side, or based on data interaction between the terminal device 140 and the backend server 110.

[0032] Of course, it is understood that the implementation environment corresponding to the method in the embodiments of this application is not limited to that of the implementation environment. Figure 1As shown, those skilled in the art can flexibly select the specific implementation environment according to actual needs, and this application does not impose any restrictions on this.

[0033] General Description of Embodiments in this Application Please refer to Figure 2 , Figure 2 This illustration shows a flowchart of a method for verifying the durability performance of an automotive mounting component, as provided in an embodiment of this application. Figure 2 As shown, a method for verifying the durability of an automotive mounting component according to an embodiment of this application includes, but is not limited to, the following steps: Step 210: Construct a universal durability performance verification bench system; wherein the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, and the adjustable clamp is used to adapt to the mounting geometry parameters of different vehicle models. Step 220: Based on the durability performance verification bench system, perform load calibration tests on the mounting parts of at least one basic vehicle model to obtain dynamic transmission characteristic data from the loading end to the mounting parts under various excitation conditions. Based on the durability performance verification bench system, perform load calibration tests on the mounting parts of at least one basic vehicle model developed based on a preset platform to obtain dynamic transmission characteristic data from the loading end to the mounting parts under various excitation conditions, and construct a load transmission database based on the dynamic transmission characteristic data. Step 230: In the case where the suspension of the target vehicle is not installed, based on the suspension design parameters of the target vehicle, the target durability conditions, and the load transfer database, the initial load parameters for durability verification of the suspension mounting part of the target vehicle are determined by simulation calculation. Step 240: Based on the initial load parameters, configure and drive the durability performance verification bench system to conduct a durability excitation test on the suspension mounting part of the target vehicle model, and obtain test data; Step 250: Based on the test data, determine the cumulative damage degree of the suspension mounting part of the target vehicle model through a preset fatigue damage model, and output the durability performance prediction result corresponding to the target vehicle model according to the cumulative damage degree.

[0034] This application provides a method for verifying the durability performance of automotive mounting components. This method aims to improve upon traditional verification processes, which are highly dependent on physical mounting components, have long cycles, and struggle to match the high-frequency load characteristics of electric vehicles. By constructing a universal verification bench and load transfer database, and integrating simulation calculations and physical experiments, it achieves proactive, efficient, and accurate prediction of the durability performance of mounting components in the un-installed state of the mounting components.

[0035] Specifically, this method first constructs a universal durability performance verification bench system, including adjustable fixtures and replaceable contoured bases, to lay the hardware foundation for multi-vehicle adaptation. Using this system, load calibration tests are conducted on at least one base vehicle developed based on a preset platform to obtain dynamic transfer characteristic data from the loading end to the suspension mount, and a load transfer database corresponding to the preset platform is constructed, providing key inputs for subsequent simulations. During the target vehicle development phase of the preset platform, when the suspension is not yet installed, the initial load parameters for bench verification can be pre-determined through simulation calculations based on its design parameters, target operating conditions, and the aforementioned database. Subsequently, the bench system is configured and driven according to these parameters to perform durability excitation tests on the suspension mount of the target vehicle, and test data is obtained. Finally, based on the test data, the cumulative damage degree is calculated using a preset fatigue damage model, and the durability performance prediction results are output. This method forms a closed-loop verification process that can be independent of specific suspension objects, allowing for independent evaluation of the durability of the vehicle body mounting parts in the early stages of development, significantly shortening the verification cycle and improving R&D efficiency and design reliability.

[0036] Before introducing and explaining the methods in the embodiments of this application, the durability performance verification bench system in the embodiments of this application will be introduced first.

[0037] In this embodiment, the durability performance verification bench system may include an adjustable clamp and a replaceable contour base. The adjustable clamp is a force-transmitting component connecting the loading mechanism and the contour base. For example, please refer to... Figure 3 , Figure 3 This illustration shows a schematic diagram of an adjustable clamp and contour base provided in an embodiment of this application. The adjustable clamp 310 may include a fixed support 311 and an adjustable loading arm 312. The fixed support 311 is used to securely connect to the test bench or loading mechanism, and its elongated slot design on its vertical plate allows for position adjustment in the height direction. One end of the adjustable loading arm 312 is slidably connected to the fixed support 311 via fasteners, while the other end is used to bear and transmit the excitation load from the loading mechanism to the contour base 320. The elongated slot on its upper surface allows for fine adjustment in the horizontal direction or loading angle. This split-type structure with multi-directional grooves allows the loading point position to be flexibly adapted to the suspension installation geometry parameters of different vehicle models. The contour base 320 is fixed below the end of the adjustable loading arm 312, and its bottom fits against the suspension mounting part of the vehicle body. Through its customized design of shape and stiffness, it accurately simulates the installation boundary and mechanical characteristics of the actual suspension on the vehicle, thereby ensuring that the test load can truly reproduce the actual state.

[0038] Please refer to Figure 4 , Figure 4This illustration shows a schematic diagram of an adjustable clamp and a contour base mounted on a suspension mounting portion 410, as provided in an embodiment of this application. The suspension mounting portion 410 can be a subframe. One end of the contour base 320 is connected to the adjustable clamp 310, while the other end is directly attached to a specific position on the suspension mounting portion 410. In this embodiment, the adjustable clamp 310 has good adjustability, enabling directional excitation and verification of a specific mounting area.

[0039] Below, in conjunction with Figure 3 and Figure 4 This paper introduces and explains each step of the method for verifying the durability performance of the automotive suspension mounting part in the embodiments of this application.

[0040] In step 210, a general-purpose durability performance verification bench system is constructed.

[0041] In this embodiment, the constructed durability performance verification bench system forms the basis for all subsequent physical tests. Its design goal is to achieve a single hardware platform capable of universally verifying the durability performance of suspension mounts across various vehicle models. This system not only stably supports and excites the vehicle body structure, but more importantly, it can quickly and accurately adapt to the differences in suspension mount positions, geometric parameters, and interface characteristics among different vehicle models.

[0042] Specifically, the system's versatility is primarily achieved through two core components: an adjustable clamp and a replaceable contouring base. The adjustable clamp, a force-transmitting component connecting the loading mechanism and the contouring base, features mechanically adjustable key installation geometry parameters such as lever arm length and loading point height. By adjusting these parameters, the same clamp can adapt to variations in the spatial arrangement and lever arm of different vehicle models, thus achieving physical versatility and replacing the traditional approach of customizing clamps for each vehicle model.

[0043] The replaceable contoured base serves as the interface simulating the mounting surface of a real suspension mount. Its mounting surface, which directly contacts the vehicle body mounting section, is designed to maintain consistency in shape, material properties, and thickness with the corresponding design parameters of the suspension mount (different suspension mounts can correspond to different contoured bases). By replacing different contoured bases, the installation boundary conditions and local stiffness of different suspension mounts can be accurately simulated, ensuring that the load transfer path from the test bench to the vehicle body mounting section is consistent with the actual vehicle mounting condition. Through the combination of adjustable fixtures and replaceable contoured bases, the test bench system constructed in this application possesses the inherent ability to adapt to multiple vehicle models and quickly switch verification objects at the hardware level, laying the physical foundation for subsequent high-efficiency and low-cost verification processes.

[0044] In step 220, based on the durability performance verification bench system, a load calibration test is performed on the suspension mounting part of at least one basic vehicle model developed based on the preset platform to obtain dynamic transmission characteristic data from the loading end to the suspension mounting part under various excitation conditions, and a load transmission database corresponding to the preset platform is constructed based on the dynamic transmission characteristic data.

[0045] In this embodiment, the load calibration test serves as a bridge connecting the general hardware platform with specific vehicle model verification applications. Its purpose is to quantitatively characterize the dynamic mechanical transmission characteristics of the constructed bench system. Since the bench system includes components such as fixtures and contoured bases, it is not an ideal rigid body. There is a frequency- and amplitude-dependent dynamic attenuation and phase change between the excitation applied by the loading mechanism and the actual force ultimately transmitted to the vehicle's suspension mounting. The purpose of this step is to systematically measure and establish a precise mapping of this excitation-response transmission relationship, providing crucial input for subsequent simulation correction and high-precision verification.

[0046] In some embodiments, step 220 may include: A contour base matching the mounting interface of the base vehicle is determined from the durability performance verification bench system, and the contour base is loaded onto the adjustable fixture. The durability performance verification bench system applies a preset excitation load spectrum containing multiple amplitudes and frequencies to the contour base. Based on the sensors installed at the suspension mounting part of the base vehicle, the actual response signal corresponding to the preset excitation load spectrum is collected. The dynamic transmission characteristic data is determined based on the actual response signal.

[0047] Specifically, during load calibration testing, a contoured base matching the selected base vehicle model can be configured for the test bench system. Adjustable fixtures are then used to adjust the base to the corresponding mounting geometry, simulating the vehicle's suspension mounting boundaries. Subsequently, a series of pre-designed excitation load spectra are applied to the contoured base using the test bench's high-frequency loading mechanism. These excitation spectra typically cover key operating conditions that electric vehicle suspensions may face, such as sinusoidal sweeps of different frequencies and amplitudes, random vibrations, or transient impact loads simulating rapid acceleration / deceleration, to fully stimulate the system's dynamic characteristics at different frequency bands and amplitudes. Simultaneously, high-precision sensors (such as force sensors and strain gauges) are placed at key locations on the vehicle body mounting (such as near connection points) to synchronously acquire the actual response signals corresponding to each set of pre-designed excitations.

[0048] By comparing and analyzing the preset input excitation spectrum with the measured actual response signal, key dynamic transfer characteristic data such as the dynamic transfer function, force attenuation rate, and phase hysteresis from the test bench loading end to the vehicle body's suspension mounting part can be calculated. These characteristic data, obtained for different base vehicle models and under different excitation conditions, are systematically organized, analyzed, and stored to construct the load transfer database required for this application. This database essentially records the state of the test bench system under different configurations and is the core data foundation for achieving accurate simulation prediction "in the target vehicle's suspension without actual mounting" in subsequent steps. It enables virtual calculations to accurately predict the actual force transfer effect in physical experiments, thus eliminating dependence on the actual target vehicle suspension.

[0049] In step 230, with the target vehicle's suspension not yet installed, and the target vehicle's suspension developed based on the preset platform not yet installed, the initial load parameters for durability verification of the target vehicle's suspension mounting part are determined through simulation calculation based on the target vehicle's suspension design parameters, target durability conditions, and the load transfer database.

[0050] In this embodiment, the precise loading conditions required to reproduce the actual service load on the test bench are calculated in advance without relying on a physical prototype of the target vehicle. This solves the bottleneck of traditional verification processes that require waiting for the physical prototype to be in place before testing can begin, significantly advancing the verification activities.

[0051] Specifically, in this embodiment, for the target vehicle model requiring performance verification, the suspension design parameters (such as mounting point coordinates, angles, bushing stiffness, etc.) and target durability conditions (such as specific reinforced road patterns and driving cycles) of the target vehicle model can be used. This information defines the loads that the suspension mounting part should bear. However, due to the dynamic transmission characteristics of the bench system itself, directly using these target loads as loading commands will lead to distortion of the actual load transmitted to the vehicle body mounting part. Therefore, this step introduces a pre-constructed load transmission database. This database contains the dynamic transmission characteristics from the bench loading end to the suspension mounting part based on actual measurements of the base vehicle model. Through simulation calculations, the design parameters and operating loads of the target vehicle model are input into a mechanical model containing adjustable fixtures, contoured bases, and local structures of the vehicle body mounting part, and the data is corrected and mapped using the transmission characteristic data in the database.

[0052] In this simulation, the goal is to generate a stress / strain response at the vehicle body mounting section that meets design expectations. Given the specific dynamic transfer characteristics of the test bench system (stored in a database), the task is to determine the appropriate load spectrum (i.e., initial load parameters) to be applied at the test bench loading end to achieve this goal. The calculated initial load parameters are pre-compensated for the dynamic attenuation and phase lag of the test bench system and can be directly used to drive the test bench. This step transforms the verification of an unknown physical object (target vehicle mounting) into a precise control problem of a known system (general-purpose test bench + database), enabling the planning of a high-fidelity verification test scheme even in the absence of a physical object.

[0053] In step 240, based on the initial load parameters, the durability performance verification bench system is configured and driven to conduct a durability excitation test on the suspension mounting part of the target vehicle model to obtain test data.

[0054] In this embodiment, this step transforms the aforementioned virtual calculation and planning into an execution phase for real physical verification. Its purpose is to utilize pre-determined, simulation-optimized loading commands for the target vehicle model to drive a universal test bench system to conduct high-fidelity durability tests on the target vehicle's body structure (suspension mounting section), thereby obtaining real response data for final performance evaluation.

[0055] Specifically, based on the suspension design parameters of the target vehicle model, a universal test bench system can be physically configured. This includes adjusting the lever arm length and loading point height of the adjustable fixture to the target state according to the parameters, and installing a contoured base on the test bench that precisely matches the suspension mounting interface of the target vehicle model. This configuration process transforms the universal hardware platform into a dedicated testing device for the target vehicle model.

[0056] Subsequently, the initial load parameters (usually a time-domain load spectrum) calculated in step 230 are loaded into the bench control system, driving a high-frequency loading mechanism (such as an electro-hydraulic servo actuator) to apply a precise excitation load to the contour base according to the spectrum. During this process, dynamic response data under the excitation load, such as strain time history and acceleration signals of key parts, are collected in real time and synchronously through a sensor network arranged on the vehicle body mounting section.

[0057] The resulting test data represents the actual mechanical response of the target vehicle's body mounting section under simulated and optimized equivalent load excitation. Unlike traditional test data that relies on actual suspension components, this data uses precisely derived load inputs, aiming to directly verify the durability of the body mounting section structure, rather than the performance of the suspension components themselves. Therefore, this test data directly reflects the strength and fatigue characteristics of the body mounting section structure under simulated real-world service conditions, providing accurate and reliable input for the final quantitative performance evaluation.

[0058] In step 250, based on the test data, the cumulative damage degree of the suspension mounting part of the target vehicle is determined by a preset fatigue damage model, and the durability performance prediction result corresponding to the target vehicle is output according to the cumulative damage degree.

[0059] In this embodiment of the application, the test data obtained in step 240, which reflects the dynamic response of the structure, is transformed into an intuitive and quantifiable engineering indicator (cumulative damage degree), and based on this, a clear predictive conclusion is given on whether the durability performance of the suspension mounting part of the target vehicle meets the design requirements.

[0060] Specifically, the collected experimental data were processed. Strain data was converted into stress time history data using material mechanics relationships, and engineering algorithms such as rainflow counting were employed to statistically process the complex variable-amplitude load history, identifying various stress levels and their corresponding cycle numbers. Subsequently, the actual cycle numbers under these different stress levels were input into a pre-defined fatigue damage model for calculation. This model is typically based on the material's fatigue characteristic curve (SN curve), and its core function is to assess the contribution of each stress cycle to the fatigue damage caused to the structure. The damage from all cycles is accumulated according to a certain criterion (such as the linear cumulative damage criterion), ultimately calculating a total cumulative damage degree. This value quantifies the proportion of fatigue life consumed by the structure under the entire durability condition simulated in this experiment.

[0061] The calculated cumulative damage is compared with a preset safety threshold in engineering. If the cumulative damage is less than or equal to the threshold, the suspension mount is predicted to meet the life design requirements under the target durability condition, and a verification result of "pass" or "qualified" is output; otherwise, fatigue risk is predicted, and a conclusion of "fail" or "requires optimization" is output. Through this step, this method transforms complex experimental phenomena into clear engineering judgments, providing a direct and reliable basis for design decisions, thereby achieving efficient and accurate predictive verification of the durability performance of the suspension mount.

[0062] It is understood that the method for verifying the durability performance of automotive mounts provided in this application embodiment uses a durability performance verification bench system to conduct load calibration tests on a base vehicle model and establishes a load transfer database containing dynamic transfer characteristic data corresponding to a preset platform under various excitation conditions. Even with the target vehicle's mount not actually installed, the initial load parameters for verification can be pre-determined through simulation calculations based on its design parameters, target durability conditions, and the aforementioned database. The bench is then configured and driven according to these parameters to conduct actual durability excitation tests on the target vehicle's mount, acquiring test data. The data is then analyzed using a fatigue damage model to output cumulative damage and durability performance prediction results. This method, by constructing a universal platform system and load transfer database, achieves independent and efficient verification of the mount's durability performance in the pre-stage, effectively eliminating dependence on physical mount samples and significantly improving the verification efficiency of mount durability performance, while reducing vehicle development cycle and costs.

[0063] Specifically, in some embodiments, the step of determining the initial load parameters for durability verification of the suspension mounting portion of the target vehicle model through simulation calculation based on the suspension design parameters of the target vehicle model, the target durability conditions, and the load transfer database includes: Obtain the virtual load spectrum of the target vehicle model under the target durability condition; Based on the suspension design parameters of the target vehicle model, a local structural finite element model is established; Based on the local structural finite element model and the load transfer database, the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part is determined; Based on the virtual load spectrum of the whole vehicle and the load transfer function, the initial load parameters for durability verification of the suspension mounting part of the target vehicle model are determined.

[0064] This application provides a method for determining initial load parameters. Specifically, the method first obtains the virtual load spectrum of the target vehicle model under the target durability condition. This spectrum defines the theoretical load history that the suspension mounting parts of the target vehicle model should withstand under its expected durability condition. The virtual load spectrum can be obtained from various high-fidelity virtual development methods, such as through virtual road surface iterative simulation of a multibody dynamics model of the vehicle containing the target model, or through equivalent conversion and spectral analysis of real-vehicle road load data (RLDA) of a benchmark vehicle model. The virtual load spectrum typically contains multi-directional (e.g., vertical, longitudinal, and lateral) force / moment time history information and serves as the load reference for all subsequent calculations.

[0065] After obtaining the virtual load spectrum of the entire vehicle, a local structural finite element model reflecting the characteristics of the load transfer path is also established. This model focuses on the mounting section and its surrounding connection area, and is constructed based on the mounting design parameters of the target vehicle model (such as mounting point coordinates, bushing stiffness, connecting sheet metal thickness and material, etc.). Its purpose is to characterize the dynamic stiffness and impedance characteristics of the vehicle body structure in local areas, which are key factors affecting the transfer of load from the mounting point to other parts of the vehicle body. The local structural finite element model is associated and mapped with the load transfer database. For example, using the measured transfer data in the database as boundary conditions or calibration targets, the finite element model of the entire system, including the adjustable fixture, the contour base, and the aforementioned local structural model, is updated and the parameters are corrected. This constructs a load transfer function that can accurately simulate the dynamic transfer relationship between the input end of the bench actuator and the response point of the vehicle body mounting section.

[0066] In this embodiment, based on the vehicle virtual load spectrum (as the desired output at the mounting mount) and the aforementioned load transfer function (describing the system characteristics from input to output), the load time history to be applied at the bench loading end, i.e., the initial load parameters, can be solved through mathematical inversion or iterative calculation. These parameters are the result of pre-compensating for all dynamic attenuation, phase lag, and nonlinear effects caused by the bench system and fixture path, thereby ensuring that when the bench is loaded according to these parameters, the vehicle virtual load spectrum can be accurately reproduced at the vehicle mounting mount.

[0067] Specifically, in some embodiments, determining the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part based on the local structural finite element model and the load transfer database includes: Based on the local structural finite element model, a full-system dynamic simulation model including the adjustable clamp, the contour base, and the suspension mounting part of the target vehicle model is established; Based on the load transfer database, the parameters in the full system dynamics simulation model are calibrated and corrected. The target loading force and force attenuation rate from the loading end of the platform to the suspension mounting part are calculated using the full system dynamics simulation model. The load transfer function is determined based on the target loading force and the force attenuation rate.

[0068] This application provides a method for determining the load transfer function. The method first assembles a local structural finite element model of the target vehicle model with a parametric CAD model of an adjustable fixture and a contoured base, defining the connection relationships between them (such as bolt connections and contact), thereby initially constructing a full-system dynamic simulation model. This model reflects the system's geometric topology and material properties, but its dynamic response prediction accuracy is limited by parameters in the model that are difficult to precisely define theoretically, such as the nonlinear stiffness and damping of the connection interfaces, and the dynamic characteristics of the material under high-frequency excitation.

[0069] To address the aforementioned issues, this application introduces a load transfer database for model parameter calibration and correction. This database stores dynamic transfer characteristic data from the bench loading end to the vehicle body mounting point, obtained through actual measurements under different excitation conditions for a base vehicle model. During calibration, these measured data can be used as targets, and optimization algorithms (such as genetic algorithms and model update techniques) can be employed to automatically adjust the values ​​of the aforementioned uncertain parameters (such as connection stiffness and damping coefficients) in the full-system dynamic simulation model, minimizing the error between the predicted response of the simulation model under the same excitation conditions and the measured data.

[0070] After calibration, this corrected full-system dynamic simulation model can be used as a high-precision virtual test platform. For the target vehicle's mounting section, a unit load or design load can be simulated in the model, and the dynamic relationship between the loading end of the test bench and the mounting section can be obtained through calculation and analysis. Here, the target loading force refers to the load required to generate the desired stress / strain response at the mounting section, and the force attenuation rate quantifies the load transfer efficiency from the loading end to the mounting section (usually less than 1); both are functions of frequency or time. Based on the calculated target loading force and force attenuation rate data, a mathematical expression describing the dynamic relationship between the system's input and output, i.e., the load transfer function, can be constructed.

[0071] Specifically, in some embodiments, configuring and driving the durability performance verification bench system to perform a durability excitation test on the suspension mounting part of the target vehicle model based on the initial load parameters, and obtaining test data, includes: According to the suspension design parameters of the target vehicle, adjust the lever arm length and loading point height of the adjustable clamp, and install the contour base that matches the mounting interface of the suspension of the target vehicle on the suspension mounting part of the target vehicle. A loading command is generated based on the initial load parameters. The durability performance verification bench system is driven to apply an excitation load to the contour base based on the loading command, and strain response data corresponding to the excitation load is collected. The strain response data is compared with the expected response data corresponding to the initial load parameters to generate an error signal; Based on the error signal, the loading command is adjusted using a PID algorithm; The test data are obtained by collecting the excitation load and strain response data during the durability excitation test.

[0072] In this embodiment of the application, a test method combining feedforward planning and closed-loop feedback is provided. Through real-time sensing and dynamic adjustment, the uncertainty and disturbance of the system are actively offset, which can ensure the high fidelity of the test process and the reliability of the result data.

[0073] Specifically, in this embodiment of the application, based on the suspension design parameters of the target vehicle model, the geometric parameters of the adjustable clamp (such as lever arm length and loading point height) can be adjusted manually or automatically, and the pre-prepared contour base that is completely matched with the target suspension mounting interface can be installed at the designated position of the suspension mounting part.

[0074] After configuration, the system enters the loading and data acquisition phase. The calculated initial load parameters (usually time-domain spectra) are converted into loading commands to drive loading mechanisms such as electro-hydraulic servo actuators. The test bench begins to apply excitation loads to the contoured base. Simultaneously, a network of strain sensors located in key areas of the vehicle body mounting (such as high-stress regions and near welds) begins to synchronously acquire strain response data at a high sampling rate. These data are a true reflection of the dynamic behavior of the structure under load.

[0075] However, it is easy to understand that due to factors such as model errors, environmental changes, and system nonlinearity, the actual applied load and its resulting response may deviate from the simulation expectations. Therefore, this application's embodiments introduce a real-time closed-loop feedback correction mechanism. During the experiment, the control system continuously compares the measured strain response data with the expected response data pre-calculated based on the initial load parameters and calibration model, generating an error signal. This error signal reflects the degree of deviation between the current actual loading state and the ideal target. Subsequently, this error signal is input to a proportional-integral-derivative (PID) controller. The PID controller quickly calculates the adjustment amount to the loading command based on the current value of the error (proportional term), its historical accumulation (integral term), and its changing trend (derivative term). This adjustment amount is superimposed on the original loading command in real time, thereby dynamically correcting the actuator's output force, forming a closed-loop control loop.

[0076] Through the aforementioned real-time closed-loop control, various disturbances can be automatically compensated during the test, ensuring that the excitation load applied to the contoured base can continuously and stably produce a strain response highly consistent with the expectation. Finally, the actual excitation load data after closed-loop correction and the synchronous high-fidelity strain response data are collected throughout the entire durability excitation test, together forming the test data for subsequent fatigue damage assessment.

[0077] Specifically, in some embodiments, determining the cumulative damage degree of the suspension mounting portion of the target vehicle model based on the test data using a preset fatigue damage model includes: Based on the test data, determine the stress time history data experienced by the suspension mounting part during the test; The stress time history data is processed by rainflow counting to obtain the actual number of cycles of the suspension mounting part under different stress levels. The actual number of cycles under each stress level is input into the preset fatigue damage model for calculation to obtain the cumulative damage degree.

[0078] In this embodiment of the application, a standardized and quantitative fatigue damage assessment method based on test response data is provided. This method transforms complex dynamic test data into intuitive life consumption indicators, ensuring the accuracy and comparability of the assessment results.

[0079] Specifically, in this embodiment, key information for fatigue assessment—stress time history data—is first extracted from the experimental data. For example, strain gauges placed at key locations on the mounting bracket can collect strain time history data throughout the entire test. Based on Hooke's Law in mechanics of materials, and combined with parameters such as the elastic modulus of the target vehicle's body material, the strain data can be converted into corresponding stress time history data. This data sequence completely records all stress fluctuations experienced by the mounting bracket under simulated durability conditions.

[0080] Subsequently, the stress time history data was processed using rainflow counting. Since the test simulated a complex variable amplitude load, which includes a large number of stress cycles with varying amplitudes and mean values, directly assessing the damage is extremely difficult. Rainflow counting is an engineering algorithm that can identify and statistically analyze all complete stress cycles (closed hysteresis loops) in a complex load history and categorize them into different stress level ranges. Through this processing, a clear set of statistical data can be obtained, namely, the actual number of cycles (n) experienced by the suspension mount at various stress levels during the test. i This completes the crucial transformation from continuous, non-stationary time-domain signals to discrete, statistically significant cyclic events.

[0081] The actual number of cycles (n) at each stress level was statistically obtained.i The data is input into a preset fatigue damage model for cumulative damage calculation. In this embodiment, the Miner linear cumulative damage criterion used in engineering applications is preferably adopted as the basis of the model. In this criterion, the fatigue damage of a structure under variable amplitude load is the linear sum of damage at each stress level. During calculation, it is necessary to retrieve or calculate the values ​​of damage at each stress level from the standard SN curve (stress-life curve) of the material or component. i The limit number of cycles (N) that leads to fatigue failure of the mounting part i Then, according to the formula: Cumulative damage D = Σ(n i / N i The calculation involves dividing the actual number of cycles at each stress level by the corresponding number of failure cycles to obtain the damage ratio caused by that stress level. The damage ratios at all stress levels are then summed to obtain the total cumulative damage (D). This value, between 0 and 1 (or greater than 1), quantifies the proportion of lifespan loss caused by the entire durability condition represented by this test to the suspension mount, providing a direct and quantitative basis for the final durability performance assessment.

[0082] As described above, the calculated cumulative damage is compared with a preset safety threshold in engineering. If the cumulative damage is less than or equal to the threshold, it is predicted that the suspension mount meets the life design requirements under the target durability condition, and a verification result of "pass" or "qualified" is output; otherwise, it is predicted that there is a fatigue risk, and a conclusion of "fail" or "needs optimization" is output. Here, the preset threshold can be set to 1.

[0083] It is understood that the technical solution of this application has at least the following advantages: 1. Improved verification accuracy: By constructing a load transfer database and deeply integrating it with the simulation model, combined with real-time closed-loop dynamic correction during the test, the transfer error from the target working condition of the whole vehicle to the actual loading on the bench is significantly reduced, making the prediction of fatigue damage of the suspension mounting part more accurate and reliable. 2. Significantly shortened verification cycle: Based on a universal bench and load database, the durability performance verification of the suspension mounting part can be carried out independently in the early development stage before the actual installation of the target vehicle suspension, realizing the pre-implementation and parallel operation of verification activities and effectively shortening the vehicle development cycle. 3. Significantly reduced R&D costs: The adoption of a universal test bench solution with adjustable fixtures and replaceable contour bases replaces the high-cost model of customizing special fixtures for each vehicle model, and reduces the number of iterations and test consumption of physical samples through predictive verification combining virtual and physical methods. 4. The method has good versatility and scalability: The method, bench system and database architecture can be adapted to different vehicle platforms. By adjusting the fixture parameters, changing the contour base and updating the load transfer database, the verification object can be quickly switched, which has good engineering applicability and promotion value.

[0084] Reference Figure 5 In this embodiment of the application, a device for verifying the durability performance of an automotive mounting component is also provided. This device includes: Construction unit 510 is used to construct a universal durability performance verification bench system; wherein, the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, the adjustable clamp being used to adapt to the mounting geometry parameters of different vehicle models; The calibration unit 520 is used to perform load calibration tests on the suspension mounting parts of at least one base vehicle model based on the durability performance verification bench system, obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions, and construct a load transmission database based on the dynamic transmission characteristic data. Simulation unit 530 is used to determine the initial load parameters for durability verification of the suspension mounting part of the target vehicle in the state where the suspension of the target vehicle is not actually installed, based on the suspension design parameters of the target vehicle, the target durability conditions and the load transfer database, through simulation calculation. Test unit 540 is used to configure and drive the durability performance verification bench system to conduct a durability excitation test on the suspension mounting part of the target vehicle according to the initial load parameters, and obtain test data; The processing unit 550 is used to determine the cumulative damage degree of the suspension mounting part of the target vehicle model based on the test data and through a preset fatigue damage model, and output the durability performance prediction result corresponding to the target vehicle model according to the cumulative damage degree.

[0085] It is understandable that, such as Figure 2 The content of the embodiment of the method for verifying the durability performance of the automotive mount shown is applicable to the embodiment of the device for verifying the durability performance of the automotive mount. The specific functions implemented by the embodiment of the device for verifying the durability performance of the automotive mount are the same as those shown in the example. Figure 2 The method for verifying the durability of the automotive mounting components shown is the same as the embodiment described above, and the beneficial effects achieved are the same as those described above. Figure 2The beneficial effects achieved by the embodiment of the method for verifying the durability of automotive suspension mounting parts shown are also the same.

[0086] Reference Figure 6 This application also discloses an electronic device, including: At least one processor 610; At least one memory 620 is used to store at least one program; When at least one program is executed by at least one processor 610, such that at least one processor 610 performs as follows: Figure 2 The illustrated embodiment is a method for verifying the durability of automotive mounting components.

[0087] The electronic device in the embodiments of this application may be a terminal device, a computer device, or a server device.

[0088] Understandable, Figure 2 The content of the verification method embodiment for the durability performance of the automotive mounting unit shown is applicable to the embodiment of this electronic device. The specific functions implemented in the embodiment of this electronic device are the same as those in the embodiment of this electronic device. Figure 2 The method for verifying the durability of the automotive mounting components shown is the same as the embodiment, and the beneficial effects achieved are the same. Figure 2 The beneficial effects achieved by the embodiment of the method for verifying the durability of automotive suspension mounting parts shown are also the same.

[0089] This application also discloses a computer-readable storage medium storing a processor-executable program, which, when executed by a processor, is used to implement, for example... Figure 2 The illustrated embodiment is a method for verifying the durability of automotive mounting components.

[0090] Understandable, Figure 2 The content of the embodiment of the method for verifying the durability performance of the automotive mounting part shown is applicable to the embodiment of this computer-readable storage medium. The specific functions implemented by the embodiment of this computer-readable storage medium are the same as those in the embodiment of this computer-readable storage medium. Figure 2 The method for verifying the durability of the automotive mounting components shown is the same as the embodiment, and the beneficial effects achieved are the same. Figure 2 The beneficial effects achieved by the embodiment of the method for verifying the durability of automotive suspension mounting parts shown are also the same.

[0091] This application also discloses a computer program product or computer program, which includes computer instructions stored in the aforementioned computer-readable storage medium. Figure 6 The processor of the illustrated electronic device can read the computer instructions from the aforementioned computer-readable storage medium, and the processor executes the computer instructions, causing the computer device to perform... Figure 2 The illustrated embodiment is a method for verifying the durability of automotive mounting components.

[0092] Understandable, Figure 2 The content of the verification method embodiment for the durability performance of the automotive mounting part shown is applicable to this computer program product or computer program embodiment. The specific functions implemented by this computer program product or computer program embodiment are the same as those described above. Figure 2 The method for verifying the durability of the automotive mounting components shown is the same as the embodiment, and the beneficial effects achieved are the same. Figure 2 The beneficial effects achieved by the embodiment of the method for verifying the durability of automotive suspension mounting parts shown are also the same.

[0093] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this application are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is changed and sub-operations described as part of a larger operation are executed independently.

[0094] Furthermore, although this application is described in the context of functional modules, it should be understood that, unless otherwise stated to the contrary, one or more of the functions and / or features may be integrated into a single physical device and / or software module, or one or more functions and / or features may be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding this application. Rather, given the properties, functions, and internal relationships of the various functional modules in the apparatus disclosed herein, the actual implementation of the module will be understood within the scope of conventional technology for an engineer. Therefore, those skilled in the art can implement the application set forth in the claims using ordinary techniques without excessive experimentation. It is also understood that the specific concepts disclosed are merely illustrative and not intended to limit the scope of this application, which is determined by the full scope of the appended claims and their equivalents.

[0095] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0096] In the embodiments of this application, the terms "module" or "unit" refer to a computer program or part of a computer program that has a predetermined function and works with other related parts to achieve a predetermined goal, and can be implemented wholly or partially using software, hardware (such as processing circuitry or memory), or a combination thereof. Similarly, a processor (or multiple processors or memory) can be used to implement one or more modules or units. Furthermore, each module or unit can be part of an overall module or unit that includes the functionality of that module or unit.

[0097] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable storage medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable storage medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0098] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0099] In the foregoing description of this specification, the references to terms such as "one embodiment," "another embodiment," or "some embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0100] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

[0101] The above is a detailed description of the preferred embodiments of this application, but this application is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A method for verifying the durability performance of an automotive suspension mounting component, characterized in that, The method includes: Construct a universal durability performance verification bench system; wherein the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, the adjustable clamp being used to adapt to the mounting geometry parameters of different vehicle models; Based on the aforementioned durability performance verification bench system, load calibration tests are conducted on the suspension mounting parts of at least one basic vehicle model developed based on a preset platform to obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions, and a load transmission database corresponding to the preset platform is constructed based on the dynamic transmission characteristic data. In the case where the suspension of the target vehicle developed based on the preset platform is not actually installed, the initial load parameters for durability verification of the suspension mounting part of the target vehicle are determined by simulation calculation based on the suspension design parameters of the target vehicle, the target durability conditions and the load transfer database. Based on the initial load parameters, the durability performance verification bench system is configured and driven to conduct a durability excitation test on the suspension mounting part of the target vehicle model to obtain test data; Based on the test data, the cumulative damage degree of the suspension mounting part of the target vehicle is determined by a preset fatigue damage model, and the durability performance prediction result corresponding to the target vehicle is output according to the cumulative damage degree.

2. The method for verifying the durability of automotive mounting components according to claim 1, characterized in that, The durability performance verification bench system is used to conduct load calibration tests on the mounting parts of at least one base vehicle model to obtain dynamic transmission characteristic data from the loading end to the mounting part under various excitation conditions. Based on the durability performance verification bench system, load calibration tests are conducted on the mounting parts of at least one base vehicle model developed based on a preset platform to obtain dynamic transmission characteristic data from the loading end to the mounting part under various excitation conditions, including: A contour base matching the mounting interface of the base vehicle is determined from the durability performance verification bench system, and the contour base is loaded onto the adjustable fixture. The durability performance verification bench system applies a preset excitation load spectrum containing multiple amplitudes and frequencies to the contour base. Based on the sensors installed at the suspension mounting part of the base vehicle, the actual response signal corresponding to the preset excitation load spectrum is collected. The dynamic transmission characteristic data is determined based on the actual response signal.

3. The method for verifying the durability of automotive mounting components according to claim 1, characterized in that, The step of determining the initial load parameters for durability verification of the suspension mounting portion of the target vehicle model through simulation calculations based on the suspension design parameters of the target vehicle model, the target durability conditions, and the load transfer database includes: Obtain the virtual load spectrum of the target vehicle model under the target durability condition; Based on the suspension design parameters of the target vehicle model, a local structural finite element model is established; Based on the local structural finite element model and the load transfer database, the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part is determined; Based on the virtual load spectrum of the whole vehicle and the load transfer function, the initial load parameters for durability verification of the suspension mounting part of the target vehicle model are determined.

4. The method for verifying the durability of automotive mounting components according to claim 3, characterized in that, The step of determining the load transfer function of the target vehicle model from the bench loading end to the suspension mounting part based on the local structural finite element model and the load transfer database includes: Based on the local structural finite element model, a full-system dynamic simulation model including the adjustable clamp, the contour base, and the suspension mounting part of the target vehicle model is established; Based on the load transfer database, the parameters in the full system dynamics simulation model are calibrated and corrected. The target loading force and force attenuation rate from the loading end of the platform to the suspension mounting part are calculated using the full system dynamics simulation model. The load transfer function is determined based on the target loading force and the force attenuation rate.

5. The method for verifying the durability of automotive mounting components according to claim 1, characterized in that, The process involves configuring and driving the durability performance verification bench system based on the initial load parameters to conduct a durability excitation test on the suspension mounting portion of the target vehicle model, obtaining test data, including: According to the suspension design parameters of the target vehicle, adjust the lever arm length and loading point height of the adjustable clamp, and install the contour base that matches the mounting interface of the suspension of the target vehicle on the suspension mounting part of the target vehicle. A loading command is generated based on the initial load parameters. The durability performance verification bench system is driven to apply an excitation load to the contour base based on the loading command, and strain response data corresponding to the excitation load is collected. The strain response data is compared with the expected response data corresponding to the initial load parameters to generate an error signal; Based on the error signal, the loading command is adjusted using a PID algorithm; The test data are obtained by collecting the excitation load and strain response data during the durability excitation test.

6. The method for verifying the durability of automotive mounting components according to claim 1, characterized in that, The determination of the cumulative damage degree of the suspension mounting part of the target vehicle model based on the test data and using a preset fatigue damage model includes: Based on the test data, determine the stress time history data experienced by the suspension mounting part during the test; The stress time history data is processed by rainflow counting to obtain the actual number of cycles of the suspension mounting part under different stress levels. The actual number of cycles under each stress level is input into the preset fatigue damage model for calculation to obtain the cumulative damage degree.

7. The method for verifying the durability of an automotive suspension mounting unit according to claim 6, characterized in that, The step of outputting the durability performance prediction result corresponding to the target vehicle model based on the cumulative damage degree includes: The cumulative damage level is compared with a preset threshold. If the cumulative damage is less than or equal to the preset threshold, the durability performance prediction result corresponding to the target vehicle model is determined to be passed. If the cumulative damage exceeds the preset threshold, the durability performance prediction result for the target vehicle model is determined to be unsuccessful.

8. A device for verifying the durability performance of an automotive suspension mounting component, characterized in that, The device includes: A building unit is used to build a universal durability performance verification bench system; wherein, the durability performance verification bench system includes an adjustable clamp and a replaceable contour base, and the adjustable clamp is used to adapt to the mounting geometry parameters of different vehicle models. The calibration unit is used to perform load calibration tests on the suspension mounting parts of at least one base vehicle model based on the durability performance verification bench system, obtain dynamic transmission characteristic data from the loading end to the suspension mounting parts under various excitation conditions, and construct a load transmission database based on the dynamic transmission characteristic data. The simulation unit is used to determine the initial load parameters for durability verification of the suspension mounting part of the target vehicle model by simulation calculation, based on the suspension design parameters of the target vehicle model, the target durability conditions, and the load transfer database, when the suspension of the target vehicle model developed based on the preset platform is not actually installed. The test unit is configured to configure and drive the durability performance verification bench system to conduct a durability excitation test on the suspension mounting part of the target vehicle according to the initial load parameters, and obtain test data; The processing unit is used to determine the cumulative damage degree of the suspension mounting part of the target vehicle model based on the test data and through a preset fatigue damage model, and output the durability performance prediction result corresponding to the target vehicle model according to the cumulative damage degree.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the method for verifying the durability performance of the automotive suspension mounting unit as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the method for verifying the durability performance of the automotive suspension mounting unit as described in any one of claims 1 to 7.

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