A method, device, equipment and medium for determining a vehicle body structure reinforcement scheme

Abstract

The application provides a determination method, device and equipment of a vehicle body structure reinforcement scheme and a medium. The determination method comprises the following steps: constructing a target vehicle-track rigid-flexible coupling dynamics model; obtaining a plurality of to-be-screened vehicle body structure reinforcement schemes by using a plurality of preset vehicle body structure reinforcement initial schemes; inputting the plurality of to-be-screened vehicle body structure reinforcement schemes into the target vehicle-track coupling dynamics model, and determining at least one to-be-optimized vehicle body structure reinforcement scheme from the plurality of to-be-screened vehicle body structure reinforcement schemes; for each to-be-optimized vehicle body structure reinforcement scheme, optimizing the to-be-optimized vehicle body structure reinforcement scheme to obtain a target vehicle body structure reinforcement scheme corresponding to the to-be-optimized vehicle body structure reinforcement scheme. According to the determination method and the determination device, a vehicle body structure reinforcement scheme for solving the abnormal shaking of a rail train can be quickly and accurately obtained.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and more specifically, to a method, apparatus, equipment, and medium for determining a vehicle body structure reinforcement scheme. Background Technology

[0002] High-speed rail is the current trend in railway development worldwide, with modern rail transit moving towards even higher speeds. Lightweight trains are beneficial for increasing operating speeds, reducing raw material consumption, lowering traction power, and improving train performance. Minimizing train weight is a common goal of modern trains, and reducing the car body's weight is a crucial aspect. Therefore, most high-speed trains both domestically and internationally currently employ aluminum alloy car body structures made of welded truss-type hollow profiles. However, this car body structure has drawbacks: low strength, leading to significant flexible vibrations during operation, which worsens passenger comfort and increases dynamic stress and reduces fatigue life.

[0003] Traditional analysis methods do not consider the impact of track vibration on vehicle vibration and cannot solve the vehicle-track dynamics problem under complex wheel-rail excitation. Secondly, traditional analysis methods consider the car body as a rigid body, which cannot fully reflect the car body vibration, cannot find the root cause of abnormal train shaking, and cannot design simulation verification of car body structure reinforcement schemes based on traditional models. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a method, device, equipment and medium for determining a vehicle body structure reinforcement scheme. Based on the vehicle-track rigid-flexible coupling dynamic model, the scheme is designed, optimized and verified by combining measured data analysis and abnormal vibration mechanism explanation with engineering application thinking, so as to quickly and accurately obtain a vehicle body structure reinforcement scheme to solve the abnormal shaking of the rail train.

[0005] In a first aspect, embodiments of this application provide a method for determining a vehicle body structure reinforcement scheme, the method comprising:

[0006] An initial vehicle-track coupled dynamics model is constructed, and the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located are input into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model.

[0007] By using multiple preset initial vehicle body structure enhancement schemes, multiple vehicle body structure enhancement schemes to be screened are obtained;

[0008] The plurality of vehicle body structure enhancement schemes to be screened are input into the target vehicle-track coupled dynamics model, and at least one vehicle body structure enhancement scheme to be optimized is determined from the plurality of vehicle body structure enhancement schemes to be screened;

[0009] For each vehicle body structure enhancement scheme to be optimized, the scheme is optimized to obtain the target vehicle body structure enhancement scheme corresponding to the scheme to be optimized.

[0010] Furthermore, after obtaining the target vehicle-track rigid-flexible coupling dynamic model, the determination method further includes:

[0011] The measured data of the rail vehicle when abnormal shaking occurs are obtained, and the vibration characteristics of the measured data are analyzed to obtain the true vibration modes.

[0012] The target vehicle-track rigid-flexible coupling dynamic model is simulated to obtain the simulation state data corresponding to the target vehicle-track rigid-flexible coupling dynamic model, and the vibration characteristics of the simulation state data are analyzed to obtain the simulation vibration modes.

[0013] When the actual vibration mode does not match the simulated vibration mode, the model parameters of the target vehicle-track rigid-flexible coupling dynamic model are continuously corrected, and the target vehicle-track rigid-flexible coupling dynamic model is simulated again until the actual vibration mode matches the simulated vibration mode, thus obtaining the target vehicle-track rigid-flexible coupling dynamic model.

[0014] Furthermore, by utilizing multiple preset initial vehicle body structure enhancement schemes, multiple vehicle body structure enhancement schemes to be screened are obtained, including:

[0015] For each initial scheme for strengthening the vehicle body structure, the parameters corresponding to the initial scheme for strengthening the vehicle body structure are randomly selected to obtain the actual initial scheme corresponding to the initial scheme for strengthening the vehicle body structure.

[0016] By combining different numbers of actual initial schemes, the multiple vehicle body structure enhancement schemes to be screened are obtained.

[0017] Furthermore, the step of inputting the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determining at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes, includes:

[0018] For each vehicle body structure enhancement scheme to be screened, the vehicle body structure enhancement scheme to be screened is input into the target vehicle-track coupled dynamics model, and the target vehicle-track coupled dynamics model is simulated to obtain the model simulation results corresponding to the vehicle body structure enhancement scheme to be screened.

[0019] Based on the simulation results of the model, determine whether abnormal vehicle shaking occurs in the target vehicle-track coupled dynamics model.

[0020] If not, then the vehicle body structure enhancement scheme to be screened is determined as the vehicle body structure enhancement scheme to be optimized.

[0021] Furthermore, the optimization of the vehicle body structure reinforcement scheme to obtain the target vehicle body structure reinforcement scheme corresponding to the vehicle body structure reinforcement scheme to be optimized includes:

[0022] The proposed vehicle body structure enhancement scheme is substituted into the target vehicle-track coupled dynamics model for dynamic simulation. Based on the simulation state of the target vehicle-track coupled dynamics model, the corresponding index values ​​for the evaluation index used to evaluate the proposed vehicle body structure enhancement scheme are determined. The proposed vehicle body structure enhancement scheme is then optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the proposed vehicle body structure enhancement scheme.

[0023] Furthermore, the evaluation indicators include any one or more of the following: vehicle body vibration modes, time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the vehicle body, operational stability indicators, and ride comfort indicators; the step of determining the indicator values ​​corresponding to the evaluation indicators used to evaluate the vehicle body structure enhancement scheme to be optimized based on the simulation state of the target vehicle-track coupled dynamics model, and optimizing the vehicle body structure enhancement scheme to be optimized according to the indicator values, to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, includes:

[0024] For each of the at least one evaluation index, determine the objective function corresponding to that evaluation index;

[0025] Based on the objective function and the simulation state, determine the value of the evaluation index corresponding to the evaluation index;

[0026] When there is an index value that is less than or equal to a preset index threshold among the index values ​​corresponding to at least one evaluation index, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted, and the index values ​​corresponding to each evaluation index are recalculated until each index value is greater than the index threshold, thereby obtaining the target vehicle body structure enhancement scheme.

[0027] When the value of each of the at least one evaluation index is greater than the index threshold, the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

[0028] Furthermore, the actual vehicle operating status parameters include the wheel-rail profile and train speed of the rail vehicle at different operating mileages, and the actual track parameters include the track type, length, radius of curvature, and turnouts of the track.

[0029] Secondly, embodiments of this application also provide a device for determining a vehicle body structure reinforcement scheme, the device comprising:

[0030] The model building module is used to build an initial vehicle-track coupled dynamics model, and input the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model.

[0031] The module for determining the scheme to be screened is used to obtain multiple schemes for enhancing the vehicle body structure to be screened by using multiple preset initial schemes for enhancing the vehicle body structure.

[0032] The optimization scheme determination module is used to input the multiple vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determine at least one vehicle body structure enhancement scheme to be optimized from the multiple vehicle body structure enhancement schemes to be screened;

[0033] The target solution determination module is used to optimize each vehicle body structure enhancement solution to obtain the target vehicle body structure enhancement solution corresponding to the vehicle body structure enhancement solution to be optimized.

[0034] Thirdly, embodiments of this application also provide an electronic device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the method for determining the vehicle body structure reinforcement scheme described above are performed.

[0035] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the method for determining the vehicle body structure reinforcement scheme as described above.

[0036] The method and apparatus for determining the vehicle body structure enhancement scheme provided in this application embodiment first construct an initial vehicle-track coupled dynamics model, and input the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located into the initial vehicle-track coupled dynamics model to obtain a target vehicle-track rigid-flexible coupled dynamics model; then, using multiple preset initial vehicle body structure enhancement schemes, multiple vehicle body structure enhancement schemes to be screened are obtained; the multiple vehicle body structure enhancement schemes to be screened are input into the target vehicle-track coupled dynamics model, and at least one vehicle body structure enhancement scheme to be optimized is determined from the multiple vehicle body structure enhancement schemes to be screened; for each vehicle body structure enhancement scheme to be optimized, the vehicle body structure enhancement scheme to be optimized is optimized to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized. Compared with the methods in the prior art, this application, based on the vehicle-track rigid-flexible coupled dynamics model, starts from the analysis of measured data and the explanation of abnormal vibration mechanisms, and combines engineering application thinking to design, optimize and verify the scheme, so as to quickly and accurately obtain the vehicle body structure enhancement scheme to solve the abnormal shaking of the track train.

[0037] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A flowchart illustrating a method for determining a vehicle body structure reinforcement scheme provided in an embodiment of this application;

[0040] Figure 2 A schematic diagram of a device for determining a vehicle body structure reinforcement scheme provided in an embodiment of this application;

[0041] Figure 3 A schematic diagram of the structure of a device for determining another vehicle body structure reinforcement scheme provided in an embodiment of this application;

[0042] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0044] First, the applicable scenarios for this application will be introduced. This application can be applied to the field of rail transit technology.

[0045] High-speed rail is the current trend in railway development worldwide, with modern rail transit moving towards even higher speeds. Lightweight trains are beneficial for increasing operating speeds, reducing raw material consumption, lowering traction power, and improving train performance. Minimizing train weight is a common goal of modern trains, and reducing the car body's weight is a crucial aspect. Therefore, most high-speed trains both domestically and internationally currently employ aluminum alloy car body structures made of welded truss-type hollow profiles. However, this car body structure has drawbacks: low strength, leading to significant flexible vibrations during operation, which worsens passenger comfort and increases dynamic stress and reduces fatigue life.

[0046] Research has revealed that traditional analysis methods do not consider the impact of track vibration on vehicle vibration and cannot solve the vehicle-track dynamics problem under complex wheel-rail excitation. Secondly, traditional analysis methods treat the car body as a rigid body, which cannot fully reflect the car body vibration, cannot find the root cause of abnormal train shaking, and cannot design simulation verification of car body structure reinforcement schemes based on traditional models.

[0047] Based on this, embodiments of this application provide a method for determining a vehicle body structure reinforcement scheme, so as to quickly and accurately obtain a vehicle body structure reinforcement scheme to solve the problem of abnormal vehicle shaking in rail trains.

[0048] Please see Figure 1 , Figure 1 This is a flowchart illustrating a method for determining a vehicle body structure reinforcement scheme provided in an embodiment of this application. Figure 1 As shown in the embodiments of this application, the determination method includes:

[0049] S101, construct an initial vehicle-track coupled dynamics model, and input the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model.

[0050] It should be noted that the vehicle-track coupled dynamics model refers to a model established based on the concept of vehicle-track coupled dynamics, which treats the vehicle system and the track system as a large, interacting, and coupled system. Actual vehicle operating state parameters refer to the parameters generated by the rail vehicle during actual operation. Here, the actual vehicle operating state parameters include the wheel-rail profile and train speed at different operating mileages. Actual track parameters refer to the actual parameters of the track on which the rail vehicle travels. Here, the actual track parameters include the track type, length, radius of curvature, and turnouts.

[0051] Regarding step S101 above, in specific implementation, an initial vehicle-track coupled dynamics model is constructed. The actual vehicle operating state parameters and the actual track parameters corresponding to the track where the vehicle is located are obtained. These parameters are then input into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model. In specific implementation, based on vehicle-track coupled dynamics theory, modal synthesis methods, and other relevant theories, research on the coupling performance of the vehicle and track is conducted, and a vehicle-track rigid-flexible coupled dynamics model is established. This model comprises three parts: a vehicle model, a track model, and a wheel-rail spatial coupling model. In the embodiments provided in this application, the vehicle model adopts a hybrid coordinate system method, considers the elastic deformation of the vehicle body and the vibration influence of onboard equipment, and performs finite element correction on the vehicle body. Considering the characteristics of the aluminum alloy structure of the vehicle body, the vehicle body is divided into four structural regions: underframe, side walls, roof, and end walls, each assigned different material properties. More accurate constraint boundary conditions are established to ensure that the mass distribution and center of gravity of the vehicle body are close to reality. In the track model, the rails are simulated as Timoshenko beam elements, and the fastening system is simplified as a three-dimensional spring-damping system. In the wheel-rail spatial coupling model, the wheel-rail normal force is calculated using the Hertzian nonlinear theory model, and the wheel-rail tangential force is calculated using the "FASTSIM" algorithm. Based on vehicle-track coupled dynamics and the finite element method, this application establishes a rigid-flexible coupled dynamic model of vehicle-track, and models the vehicle body in zones according to material properties. The calculated results can more completely reflect the vibration information of the vehicle body and are more consistent with the actual situation, thus meeting the needs of abnormal shaking mechanism analysis of high-speed trains and design of vehicle body structure reinforcement schemes.

[0052] Specifically, regarding step S101 above, after obtaining the target vehicle-track rigid-flexible coupling dynamic model, the determination method further includes:

[0053] Step A: Obtain the measured data of the rail vehicle when abnormal shaking occurs, and analyze the vibration characteristics of the measured data to obtain the true vibration modes.

[0054] Step B involves simulating the target vehicle-track rigid-flexible coupling dynamic model to obtain simulation state data corresponding to the model, and then analyzing the vibration characteristics of the simulation state data to obtain the simulation vibration modes.

[0055] It should be noted that abnormal shaking refers to significant vibration between the track and the rail vehicle. Measured data refers to the data generated when abnormal shaking occurs during actual rail vehicle operation. A mode is the inherent vibration characteristic of a structure; each mode has a specific natural frequency, damping ratio, and mode shape. These modal parameters can be obtained through calculation or experimental analysis; such a calculation or experimental analysis process is called modal analysis. Actual vibration modes refer to the vibration modes between the track and the vehicle generated under actual operating conditions. Simulation state data refers to the simulation data generated during the simulation of the target vehicle-track rigid-flexible coupling dynamic model. Simulated vibration modes refer to the vibration modes generated between the vehicle model and the track model during the simulation of the target vehicle-track rigid-flexible coupling dynamic model.

[0056] Regarding steps A and B above, in specific implementation, when abnormal vehicle shaking occurs during the actual operation of the rail vehicle, measured data of the rail vehicle at the time of the abnormal shaking is acquired, and vibration characteristic analysis is performed on the measured data to obtain the true vibration modes. How to perform vibration characteristic analysis on the measured data to obtain vibration modes is explained in detail in existing technology and will not be repeated here. Then, the constructed target vehicle-track rigid-flexible coupled dynamic model is simulated to obtain the simulation state data corresponding to the target vehicle-track rigid-flexible coupled dynamic model, and vibration characteristic analysis is performed on the simulation state data to obtain the simulated vibration modes.

[0057] Step C: When there is a mismatch between the actual vibration mode and the simulated vibration mode, continuously correct the model parameters of the target vehicle-track rigid-flexible coupling dynamic model, and re-run the simulation of the target vehicle-track rigid-flexible coupling dynamic model until the actual vibration mode and the simulated vibration mode match, thus obtaining the target vehicle-track rigid-flexible coupling dynamic model.

[0058] Regarding step C above, in practical implementation, the constructed target vehicle-track rigid-flexible coupling dynamic model needs to conform to the vibration situation under actual conditions. Therefore, it is necessary to interact with the target vehicle-track rigid-flexible coupling dynamic model and the data after vibration characteristic analysis to verify whether the model matches the actual situation. Thus, it is necessary to verify whether the actual vibration modes match the simulated vibration modes. If they match, the target vehicle-track rigid-flexible coupling dynamic model is considered to match the actual abnormal vehicle shaking phenomenon. When the actual vibration modes do not match the simulated vibration modes, the model parameters of the target vehicle-track rigid-flexible coupling dynamic model need to be corrected, and the target vehicle-track rigid-flexible coupling dynamic model needs to be simulated again to obtain new simulated vibration modes, until the actual vibration modes match the new simulated vibration modes, thus obtaining the target vehicle-track rigid-flexible coupling dynamic model. In this way, this application takes the abnormal vehicle shaking phenomenon as a starting point, first analyzes the vibration characteristics of the measured data, establishes a model to reproduce the shaking phenomenon, analyzes the shaking mechanism, finds the root cause of the problem, and then designs a solution in a more concise and efficient manner.

[0059] S102, using multiple preset initial schemes for enhancing vehicle body structure, obtain multiple schemes for enhancing vehicle body structure to be screened.

[0060] It should be noted that the initial vehicle body structure reinforcement scheme refers to a pre-defined initial scheme used to reinforce the vehicle body structure. For example, the initial vehicle body structure reinforcement scheme could be: replacing the vehicle body material with a higher strength one, thickening the side walls, adding inner end walls, adding side wall columns, adding T-beams to the vehicle body underframe, etc., and this application does not specifically limit this. The vehicle body structure reinforcement scheme to be screened refers to a scheme obtained using at least one initial vehicle body structure reinforcement scheme. Here, a single initial vehicle body structure reinforcement scheme can be used as the vehicle body structure reinforcement scheme to be screened, or multiple initial vehicle body structure reinforcement schemes can be combined to obtain the vehicle body structure reinforcement scheme to be screened.

[0061] Specifically, regarding step S102 above, the process of obtaining multiple preliminary vehicle body structure enhancement schemes by utilizing multiple preset vehicle body structure enhancement schemes includes:

[0062] Step 1021: For each initial scheme for reinforcing the vehicle body structure, randomly select values ​​for the parameters corresponding to the initial scheme to obtain the actual initial scheme corresponding to the initial scheme for reinforcing the vehicle body structure.

[0063] It should be noted that the parameters corresponding to the initial body structure reinforcement scheme refer to the adjustable parameters involved in the scheme. For example, when the initial body structure reinforcement scheme involves replacing the body material with a higher strength material, this parameter can be the strength of the body material; when the initial body structure reinforcement scheme involves thickening the body sidewalls, this parameter can be the thickness of the thickened body sidewalls. The actual initial scheme refers to the initial scheme obtained by randomly selecting values ​​for the parameters in the initial body structure reinforcement scheme. For example, when the initial body structure reinforcement scheme involves thickening the body sidewalls, and the randomly selected parameter is 5 mm, the actual initial scheme is to thicken the body sidewalls by 5 mm.

[0064] Regarding step 1021 above, in specific implementation, for each initial scheme for reinforcing the vehicle body structure, the parameters corresponding to the initial scheme for reinforcing the vehicle body structure are randomly selected to obtain the actual initial scheme corresponding to the initial scheme for reinforcing the vehicle body structure.

[0065] Step 1022: Combine different numbers of actual initial schemes to obtain the multiple vehicle body structure enhancement schemes to be screened.

[0066] Regarding step 1022 above, in specific implementation, different numbers of actual initial schemes are used to combine schemes to obtain the multiple vehicle body structure enhancement schemes to be screened. Here, one actual initial scheme can be used as the vehicle body structure enhancement scheme to be screened, or multiple actual initial schemes can be combined to obtain the vehicle body structure enhancement scheme to be screened. For example, two different actual initial schemes can be combined to obtain the vehicle body structure enhancement scheme to be screened, or three different actual initial schemes can be combined to obtain the vehicle body structure enhancement scheme to be screened.

[0067] S103, input the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determine at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes to be screened.

[0068] It should be noted that the vehicle body structure enhancement scheme to be optimized refers to the scheme selected from multiple vehicle body structure enhancement schemes that can effectively suppress the abnormal shaking phenomenon of the rail train.

[0069] Regarding step S103 above, in specific implementation, the multiple vehicle body structure enhancement schemes to be screened are input into the constructed target vehicle-track coupled dynamics model, and at least one vehicle body structure enhancement scheme to be optimized is determined from the multiple vehicle body structure enhancement schemes to be screened that can effectively suppress the abnormal shaking phenomenon of the track train.

[0070] Specifically, regarding step S103 above, the step of inputting the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determining at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes to be screened, includes:

[0071] Step 1031: For each vehicle body structure enhancement scheme to be screened, input the vehicle body structure enhancement scheme to be screened into the target vehicle-track coupled dynamics model, and simulate the target vehicle-track coupled dynamics model to obtain the model simulation results corresponding to the vehicle body structure enhancement scheme to be screened.

[0072] Step 1032: Based on the simulation results of the model, determine whether abnormal vehicle shaking occurs in the target vehicle-track coupled dynamics model.

[0073] Step 1033: If not, then the vehicle body structure enhancement scheme to be screened is determined as the vehicle body structure enhancement scheme to be optimized.

[0074] Regarding steps 1031-1033 above, in specific implementation, for each vehicle body structure enhancement scheme to be screened, the scheme is input into the target vehicle-track coupled dynamics model, and simulation is performed on the model to obtain the simulation results corresponding to the vehicle body structure enhancement scheme. Based on the simulation results, it is determined whether abnormal vehicle shaking occurs in the target vehicle-track coupled dynamics model. If abnormal vehicle shaking occurs in the model, it is considered that the vehicle body structure enhancement scheme to be screened has not suppressed the abnormal shaking, and the scheme must be excluded. If no abnormal shaking occurs in the model, it is considered that the scheme effectively suppresses the abnormal shaking, and step 1033 is executed to determine the scheme as the vehicle body structure enhancement scheme to be optimized.

[0075] S104. For each vehicle body structure enhancement scheme to be optimized, optimize the vehicle body structure enhancement scheme to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized.

[0076] It should be noted that the target vehicle body structure enhancement scheme refers to the vehicle body structure enhancement scheme obtained after optimizing the parameters in the vehicle body structure enhancement scheme to be optimized.

[0077] Regarding step S104 above, in specific implementation, for each vehicle body structure enhancement scheme to be optimized, the scheme is optimized to obtain the target vehicle body structure enhancement scheme corresponding to the scheme to be optimized. Specifically, regarding step S104 above, optimizing the vehicle body structure enhancement scheme to obtain the target vehicle body structure enhancement scheme corresponding to the scheme to be optimized includes:

[0078] The proposed vehicle body structure enhancement scheme is substituted into the target vehicle-track coupled dynamics model for dynamic simulation. Based on the simulation state of the target vehicle-track coupled dynamics model, the corresponding index values ​​for the evaluation index used to evaluate the proposed vehicle body structure enhancement scheme are determined. The proposed vehicle body structure enhancement scheme is then optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the proposed vehicle body structure enhancement scheme.

[0079] It should be noted that the evaluation index refers to the index used to evaluate the operating status of the actual rail vehicle after the optimization scheme for the car body structure enhancement is applied to the actual rail vehicle. Here, according to the embodiment provided in this application, the evaluation index includes any one or more of the following: car body vibration mode, time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the car body, running stability index, and ride comfort index. The index value refers to the numerical value corresponding to the evaluation index.

[0080] In the specific implementation of the above steps, the proposed vehicle body structure enhancement scheme is first substituted into the established target vehicle-track coupled dynamics model for dynamic simulation to obtain the simulation state of the target vehicle-track coupled dynamics model. Then, based on the simulation state of the target vehicle-track coupled dynamics model, the corresponding index values ​​for the evaluation index used to evaluate the proposed vehicle body structure enhancement scheme are determined. Finally, the proposed vehicle body structure enhancement scheme is optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the proposed vehicle body structure enhancement scheme.

[0081] Specifically, regarding the above steps, the step of determining the evaluation index value corresponding to the evaluation index used to evaluate the vehicle body structure enhancement scheme to be optimized based on the simulation state of the target vehicle-track coupled dynamics model, and optimizing the vehicle body structure enhancement scheme to be optimized according to the index value to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, includes:

[0082] I: For each of the at least one evaluation index, determine the objective function corresponding to that evaluation index.

[0083] It should be noted that the objective function refers to the function used to calculate the numerical value of the evaluation indicator.

[0084] Regarding step I above, in specific implementation, for each of the at least one evaluation index, the objective function corresponding to that evaluation index is determined.

[0085] II: Determine the value of the evaluation index corresponding to the objective function and the simulation state.

[0086] Regarding step II above, in practical implementation, based on the objective function determined in step A and the simulation state of the target vehicle-track coupled dynamics model, the corresponding index value is determined. Specifically, the parameters required in the objective function are determined from the simulation state of the target vehicle-track coupled dynamics model, and these parameters are substituted into the objective function to calculate the corresponding index value.

[0087] III: When there is an index value less than or equal to a preset index threshold among the index values ​​corresponding to at least one evaluation index, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted, and the index values ​​corresponding to each evaluation index are recalculated until each index value is greater than the index threshold, thereby obtaining the target vehicle body structure enhancement scheme.

[0088] IV: When the value of each of the at least one evaluation index is greater than the index threshold, the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

[0089] It should be noted that the indicator threshold refers to a pre-set threshold used to determine whether the indicator value meets the requirements.

[0090] Regarding steps III and IV above, in specific implementation, after calculating the index value corresponding to each evaluation index in step II, it is determined whether all index values ​​are less than or equal to a preset index threshold. If there is an index value less than or equal to the index threshold, then step III is executed. If at least one evaluation index value is less than or equal to the preset index threshold, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted to obtain the adjusted vehicle body structure enhancement scheme. The adjusted vehicle body structure enhancement scheme is then re-substituted into the target vehicle-track coupled dynamics model, and the index values ​​corresponding to each evaluation index are recalculated until all index values ​​are greater than the index threshold. The adjusted vehicle body structure enhancement scheme is then determined as the target suspension parameter group. If all index values ​​are greater than the preset index threshold, then step IV is executed. If each index value corresponding to at least one evaluation index is greater than the index threshold, then the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

[0091] Thus, in steps I-IV above, this application fully considers the impact of the car body reinforcement scheme on the vibration modes of the rail vehicle, the time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the car body, the running stability index, and the ride comfort index, thereby improving the dynamic analysis of the railway transportation system. Furthermore, by using the vibration modes of the rail vehicle, the time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the car body, the running stability index, and the ride comfort index as optimization objective functions, it is possible to comprehensively determine whether different car body reinforcement schemes can effectively suppress abnormal car shaking and whether all indicators during train operation meet the requirements of the design specifications.

[0092] According to the vehicle body structure reinforcement scheme provided in this application, after obtaining at least one target vehicle body structure reinforcement scheme, it is necessary to consider factors such as comprehensive production process, actual operability, and economy to select the most suitable vehicle body structure reinforcement scheme. The finally determined vehicle body structure reinforcement scheme is then applied to actual vehicles for actual line testing to further verify whether it effectively suppresses abnormal vehicle shaking phenomena. Thus, the design method of this scheme, through repeated simulations, determines the optimal vehicle body structure reinforcement design scheme based on relevant evaluation indicators and combined with engineering realities such as production process, feasibility, and economy, providing solid theoretical support for the implementation of the scheme.

[0093] The method for determining the vehicle body structure enhancement scheme provided in this application embodiment firstly constructs an initial vehicle-track coupled dynamics model and inputs the actual vehicle operation state parameters corresponding to the rail vehicle and the actual track parameters corresponding to the track where the rail vehicle is located into the initial vehicle-track coupled dynamics model to obtain a target vehicle-track rigid-flexible coupled dynamics model. Then, using multiple preset initial vehicle body structure enhancement schemes, multiple vehicle body structure enhancement schemes to be screened are obtained. The multiple vehicle body structure enhancement schemes to be screened are input into the target vehicle-track coupled dynamics model, and at least one vehicle body structure enhancement scheme to be optimized is determined from the multiple vehicle body structure enhancement schemes to be screened. For each vehicle body structure enhancement scheme to be optimized, the vehicle body structure enhancement scheme to be optimized is optimized to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized. Compared with the methods in the prior art, this application, based on the vehicle-track rigid-flexible coupled dynamics model, starts from the analysis of measured data and the explanation of abnormal vibration mechanisms, and combines engineering application thinking to design, optimize and verify the scheme, so as to quickly and accurately obtain the vehicle body structure enhancement scheme to solve the abnormal shaking of rail trains.

[0094] Please see Figure 2 , Figure 3 , Figure 2This is a schematic diagram of a device for determining a vehicle body structure reinforcement scheme according to an embodiment of this application. Figure 3 This is a schematic diagram of a device for determining another vehicle body structure reinforcement scheme provided in an embodiment of this application. Figure 2 As shown, the determining device 200 includes:

[0095] The model building module 201 is used to build an initial vehicle-track coupled dynamics model and input the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model.

[0096] The module 202 for determining the scheme to be screened is used to obtain multiple schemes for enhancing the vehicle body structure to be screened by using multiple preset initial schemes for enhancing the vehicle body structure.

[0097] The optimization scheme determination module 203 is used to input the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determine at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes to be screened;

[0098] The target scheme determination module 204 is used to optimize each vehicle body structure enhancement scheme to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized.

[0099] Furthermore, such as Figure 3 As shown, the determining device 200 further includes a model correction module 205. After obtaining the target vehicle-track rigid-flexible coupling dynamic model, the model correction module 205 is used to:

[0100] The measured data of the rail vehicle when abnormal shaking occurs are obtained, and the vibration characteristics of the measured data are analyzed to obtain the true vibration modes.

[0101] The target vehicle-track rigid-flexible coupling dynamic model is simulated to obtain the simulation state data corresponding to the target vehicle-track rigid-flexible coupling dynamic model, and the vibration characteristics of the simulation state data are analyzed to obtain the simulation vibration modes.

[0102] When the actual vibration mode does not match the simulated vibration mode, the model parameters of the target vehicle-track rigid-flexible coupling dynamic model are continuously corrected, and the target vehicle-track rigid-flexible coupling dynamic model is simulated again until the actual vibration mode matches the simulated vibration mode, thus obtaining the target vehicle-track rigid-flexible coupling dynamic model.

[0103] Furthermore, when the candidate scheme determination module 202 is used to obtain multiple candidate vehicle body structure enhancement schemes using multiple preset initial vehicle body structure enhancement schemes, the candidate scheme determination module 202 is also used to:

[0104] For each initial scheme for strengthening the vehicle body structure, the parameters corresponding to the initial scheme for strengthening the vehicle body structure are randomly selected to obtain the actual initial scheme corresponding to the initial scheme for strengthening the vehicle body structure.

[0105] By combining different numbers of actual initial schemes, the multiple vehicle body structure enhancement schemes to be screened are obtained.

[0106] Furthermore, when the optimization scheme determination module 203 inputs the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determines at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes to be screened, the optimization scheme determination module 203 is also used for:

[0107] For each vehicle body structure enhancement scheme to be screened, the vehicle body structure enhancement scheme to be screened is input into the target vehicle-track coupled dynamics model, and the target vehicle-track coupled dynamics model is simulated to obtain the model simulation results corresponding to the vehicle body structure enhancement scheme to be screened.

[0108] Based on the simulation results of the model, determine whether abnormal vehicle shaking occurs in the target vehicle-track coupled dynamics model.

[0109] If not, then the vehicle body structure enhancement scheme to be screened is determined as the vehicle body structure enhancement scheme to be optimized.

[0110] Furthermore, when the target solution determination module 204 optimizes the vehicle body structure enhancement scheme to be optimized and obtains the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, the target solution determination module 204 is also used for:

[0111] The proposed vehicle body structure enhancement scheme is substituted into the target vehicle-track coupled dynamics model for dynamic simulation. Based on the simulation state of the target vehicle-track coupled dynamics model, the corresponding index values ​​for the evaluation index used to evaluate the proposed vehicle body structure enhancement scheme are determined. The proposed vehicle body structure enhancement scheme is then optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the proposed vehicle body structure enhancement scheme.

[0112] Furthermore, the evaluation indicators include any one or more of the following: vehicle body vibration modes, time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the vehicle body, running stability indicators, and ride comfort indicators; when the target scheme determination module 204 determines the index values ​​corresponding to the evaluation indicators used to evaluate the vehicle body structure enhancement scheme to be optimized based on the simulation state of the target vehicle-track coupled dynamics model, and optimizes the vehicle body structure enhancement scheme to be optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, the target scheme determination module 204 is also used for:

[0113] For each of the at least one evaluation index, determine the objective function corresponding to that evaluation index;

[0114] Based on the objective function and the simulation state, determine the value of the evaluation index corresponding to the evaluation index;

[0115] When there is an index value that is less than or equal to a preset index threshold among the index values ​​corresponding to at least one evaluation index, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted, and the index values ​​corresponding to each evaluation index are recalculated until each index value is greater than the index threshold, thereby obtaining the target vehicle body structure enhancement scheme.

[0116] When the value of each of the at least one evaluation index is greater than the index threshold, the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

[0117] Furthermore, the actual vehicle operating status parameters include the wheel-rail profile and train speed of the rail vehicle at different operating mileages, and the actual track parameters include the track type, length, radius of curvature, and turnouts of the track.

[0118] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 4 As shown, the electronic device 400 includes a processor 410, a memory 420, and a bus 430.

[0119] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 is running, the processor 410 communicates with the memory 420 via the bus 430. When the machine-readable instructions are executed by the processor 410, they can perform the operations described above. Figure 1 The steps of the method for determining the vehicle body structure reinforcement scheme in the method embodiment shown are described in detail in the method embodiment, and will not be repeated here.

[0120] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the above-described actions. Figure 1 The steps of the method for determining the vehicle body structure reinforcement scheme in the method embodiment shown are described in detail in the method embodiment, and will not be repeated here.

[0121] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0122] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0123] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0124] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0125] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, 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 portion 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 described in 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.

[0126] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0127] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for determining a vehicle body structure reinforcement scheme, characterized in that, The determination method includes: An initial vehicle-track coupled dynamics model is constructed, and the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located are input into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model. By using multiple preset initial vehicle body structure enhancement schemes, multiple vehicle body structure enhancement schemes to be screened are obtained; The plurality of vehicle body structure enhancement schemes to be screened are input into the target vehicle-track coupled dynamics model, and at least one vehicle body structure enhancement scheme to be optimized is determined from the plurality of vehicle body structure enhancement schemes to be screened; For each vehicle body structure enhancement scheme to be optimized, the scheme is optimized to obtain the target vehicle body structure enhancement scheme corresponding to the scheme to be optimized. The optimization of the vehicle body structure reinforcement scheme to obtain the target vehicle body structure reinforcement scheme corresponding to the scheme to be optimized includes: The vehicle body structure enhancement scheme to be optimized is substituted into the target vehicle-track coupled dynamics model for dynamic simulation. Based on the simulation state of the target vehicle-track coupled dynamics model, the index values ​​corresponding to the evaluation index used to evaluate the vehicle body structure enhancement scheme to be optimized are determined. The vehicle body structure enhancement scheme to be optimized is then optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized. The evaluation indicators include any one or more of the following: vehicle body vibration modes, time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the vehicle body, running stability indicators, and ride comfort indicators; the simulation state based on the target vehicle-track coupled dynamics model determines the indicator values ​​corresponding to the evaluation indicators used to evaluate the vehicle body structure enhancement scheme to be optimized, and optimizes the vehicle body structure enhancement scheme to be optimized according to the indicator values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, including: For each of the at least one evaluation index, determine the objective function corresponding to that evaluation index; Based on the objective function and the simulation state, determine the value of the evaluation index corresponding to the evaluation index; When there is an index value that is less than or equal to a preset index threshold among the index values ​​corresponding to at least one evaluation index, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted, and the index values ​​corresponding to each evaluation index are recalculated until each index value is greater than the index threshold, thereby obtaining the target vehicle body structure enhancement scheme. When the value of each of the at least one evaluation index is greater than the index threshold, the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

2. The determination method according to claim 1, characterized in that, After obtaining the target vehicle-track rigid-flexible coupling dynamic model, the determination method further includes: The measured data of the rail vehicle when abnormal shaking occurs are obtained, and the vibration characteristics of the measured data are analyzed to obtain the true vibration modes. The target vehicle-track rigid-flexible coupling dynamic model is simulated to obtain the simulation state data corresponding to the target vehicle-track rigid-flexible coupling dynamic model, and the vibration characteristics of the simulation state data are analyzed to obtain the simulation vibration modes. When the actual vibration mode does not match the simulated vibration mode, the model parameters of the target vehicle-track rigid-flexible coupling dynamic model are continuously corrected, and the target vehicle-track rigid-flexible coupling dynamic model is simulated again until the actual vibration mode matches the simulated vibration mode, thus obtaining the target vehicle-track rigid-flexible coupling dynamic model.

3. The determination method according to claim 1, characterized in that, The process involves using multiple preset initial vehicle body structure enhancement schemes to obtain multiple vehicle body structure enhancement schemes to be screened, including: For each initial scheme for strengthening the vehicle body structure, the parameters corresponding to the initial scheme for strengthening the vehicle body structure are randomly selected to obtain the actual initial scheme corresponding to the initial scheme for strengthening the vehicle body structure. By combining different numbers of actual initial schemes, the multiple vehicle body structure enhancement schemes to be screened are obtained.

4. The determination method according to claim 1, characterized in that, The step of inputting the plurality of vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determining at least one vehicle body structure enhancement scheme to be optimized from the plurality of vehicle body structure enhancement schemes, includes: For each vehicle body structure enhancement scheme to be screened, the vehicle body structure enhancement scheme to be screened is input into the target vehicle-track coupled dynamics model, and the target vehicle-track coupled dynamics model is simulated to obtain the model simulation results corresponding to the vehicle body structure enhancement scheme to be screened. Based on the simulation results of the model, determine whether abnormal vehicle shaking occurs in the target vehicle-track coupled dynamics model. If not, then the vehicle body structure enhancement scheme to be screened is determined as the vehicle body structure enhancement scheme to be optimized.

5. The determination method according to claim 1, characterized in that, The actual vehicle operating status parameters include the wheel-rail profile and train speed of the rail vehicle at different operating mileages, and the actual track parameters include the track type, length, radius of curvature, and turnouts.

6. A device for determining a vehicle body structure reinforcement scheme, characterized in that, The determining device includes: The model building module is used to build an initial vehicle-track coupled dynamics model, and input the actual vehicle operation state parameters corresponding to the track vehicle and the actual track parameters corresponding to the track where the track vehicle is located into the initial vehicle-track coupled dynamics model to obtain the target vehicle-track rigid-flexible coupled dynamics model. The module for determining the scheme to be screened is used to obtain multiple schemes for enhancing the vehicle body structure to be screened by using multiple preset initial schemes for enhancing the vehicle body structure. The optimization scheme determination module is used to input the multiple vehicle body structure enhancement schemes to be screened into the target vehicle-track coupled dynamics model, and determine at least one vehicle body structure enhancement scheme to be optimized from the multiple vehicle body structure enhancement schemes to be screened; The target solution determination module is used to optimize each vehicle body structure enhancement solution to obtain the target vehicle body structure enhancement solution corresponding to the vehicle body structure enhancement solution to be optimized. When the target scheme determination module optimizes the vehicle body structure enhancement scheme to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, the target scheme determination module is further used for: The vehicle body structure enhancement scheme to be optimized is substituted into the target vehicle-track coupled dynamics model for dynamic simulation. Based on the simulation state of the target vehicle-track coupled dynamics model, the index values ​​corresponding to the evaluation index used to evaluate the vehicle body structure enhancement scheme to be optimized are determined. The vehicle body structure enhancement scheme to be optimized is then optimized according to the index values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized. The evaluation indicators include any one or more of the following: vehicle body vibration modes, time-domain and frequency-domain characteristics of vertical and lateral acceleration at different positions of the vehicle body, running stability indicators, and ride comfort indicators; when the target scheme determination module determines the indicator values ​​corresponding to the evaluation indicators used to evaluate the vehicle body structure enhancement scheme to be optimized based on the simulation state of the target vehicle-track coupled dynamics model, and optimizes the vehicle body structure enhancement scheme to be optimized according to the indicator values ​​to obtain the target vehicle body structure enhancement scheme corresponding to the vehicle body structure enhancement scheme to be optimized, the target scheme determination module is further used for: For each of the at least one evaluation index, determine the objective function corresponding to that evaluation index; Based on the objective function and the simulation state, determine the value of the evaluation index corresponding to the evaluation index; When there is an index value that is less than or equal to a preset index threshold among the index values ​​corresponding to at least one evaluation index, the parameters in the vehicle body structure enhancement scheme to be optimized are adjusted, and the index values ​​corresponding to each evaluation index are recalculated until each index value is greater than the index threshold, thereby obtaining the target vehicle body structure enhancement scheme. When the value of each of the at least one evaluation index is greater than the index threshold, the vehicle body structure enhancement scheme to be optimized is determined as the target vehicle body structure enhancement scheme.

7. An electronic device, characterized in that, include: The device includes a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. The machine-readable instructions are executed by the processor to perform the steps of the method for determining a vehicle body structure reinforcement scheme as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the method for determining the vehicle body structure reinforcement scheme as described in any one of claims 1 to 5.

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