Impact force simulation method, device and equipment for wheel assembly

Abstract

The present application relates to a method, device, and apparatus for simulating the impact stress of a wheel assembly, and relates to the technical field of electronic digital data processing. The method comprises: constructing a punch rigid body model and a wheel assembly simulation model; applying an impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraints of the punch rigid body model to simulate the impact stress of the wheel assembly simulation model, thereby obtaining explicit analysis results for the wheel assembly simulation model; the motion constraints of the punch rigid body model are used to constrain the punch rigid body model to move only in the radial direction of the tire; the explicit analysis results are used to characterize the physical response characteristics of the wheel assembly simulation model during the impact stress simulation process; and implicit analysis is performed on the explicit analysis results to obtain the amount of plastic deformation of the wheel rim. Thus, accurate prediction of rim deformation under impact conditions can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic digital data processing, in particular to the technical field of simulation, and specifically to a method, device and equipment for simulating the impact force of a wheel assembly. Background Art

[0002] As the core load-bearing component of a vehicle's travel system, the wheel's structural strength is directly related to the vehicle's safety and reliability. Under complex road conditions, wheels must withstand the combined effects of road impact, dynamic loads, and alternating stresses. The inner rim, the critical junction between the wheel and tire, is crucial to its overall performance, making research on its structural strength crucial.

[0003] However, with the increasing demand for lightweight and high-performance new energy vehicles, wheel design is gradually evolving towards thinner walls and higher-strength materials. Traditional design experience and static simulation methods based on fuel-powered vehicles are no longer sufficient. Therefore, it is necessary to explore a high-precision simulation method to accurately predict wheel rim deformation under impact conditions. Summary of the Invention

[0004] This application provides a method, device, and apparatus for simulating the impact stress of a wheel assembly to at least address the technical problem in related technologies of being unable to accurately predict wheel rim deformation under impact conditions. The technical solutions of this application are as follows:

[0005] According to the first aspect provided by the present application, a method for simulating the impact force of a wheel assembly is provided, comprising: constructing a punch rigid body model and a wheel assembly simulation model; wherein the wheel assembly simulation model is used to characterize a wheel with a tire and a wheel hub, and the wheel hub and the tire have been subjected to an assembly preload, and the tire has been inflated; based on the motion constraint conditions of the punch rigid body model, an impact force is applied to the wheel assembly simulation model through the punch rigid body model to perform an impact force simulation on the wheel assembly simulation model, and obtain an explicit analysis result of the wheel assembly simulation model; the motion constraint conditions of the punch rigid body model are used to constrain the punch rigid body model to move only in the radial direction of the tire; the explicit analysis result is used to characterize the physical response characteristics of the wheel assembly simulation model during the impact force simulation process; and the explicit analysis result is implicitly analyzed to obtain the amount of plastic deformation of the inner rim of the wheel.

[0006] Based on the above technical means, the present application can construct real boundary conditions (preload stress distribution, air pressure load) through the vehicle assembly simulation model to accurately reflect the mechanical properties of the actual wheel during the simulation process, and realize efficient simulation of the dynamic impact process and accurate prediction of static plastic deformation through explicit-implicit joint analysis.

[0007] In one possible approach, the explicit analysis results include at least the stable strain results of the inner rim of the wheel.

[0008] In one possible embodiment, the method further includes: establishing an elastic connection between the wheel mounting plate portion of the assembly and the punch rigid body model at a target coordinate point, and setting the connection stiffness of the elastic connection to a preset stiffness; wherein the target coordinate point is any coordinate point on the impact path.

[0009] According to the above technical means, the present application can simulate actual working conditions through the setting of elastic connection and preset stiffness, improve the authenticity of the simulation, and provide a more reliable simulation basis for the evaluation of wheel impact resistance.

[0010] In one possible approach, based on the motion constraints of the punch rigid body model, an impact force is applied to the wheel assembly simulation model through the punch rigid body model to perform impact force simulation on the wheel assembly simulation model, and obtain explicit analysis results of the wheel assembly simulation model, including: determining the field output data and process output data of the wheel assembly simulation model during the impact force simulation; the field output data is used to represent the state data of the wheel assembly simulation model at a preset time; the process output data is used to represent the state data of the preset position of the wheel assembly simulation model over time; based on the field output data and the process output data, the explicit analysis results are determined.

[0011] According to the above technical means, the present application can analyze the distribution law of the impact force response from the spatial dimension through the coordinated analysis of field output and process output, and can also analyze the dynamic changes of the impact force response from the time dimension, thereby accurately analyzing the impact force performance of the wheel assembly.

[0012] In one possible approach, explicit analysis results are determined based on field output data and process output data, including: determining material parameters at each position of the wheel assembly; material parameters are used to characterize the mechanical behavior of the material under mechanical loads; based on the material parameters, the field output data and process output data are explicitly analyzed to obtain explicit analysis results.

[0013] According to the above technical means, the present application can accurately simulate the response of the material under actual working conditions by determining the material parameters at each position of the wheel assembly, thereby explicitly analyzing the field output data and the process output data through the material parameters, and accurately reflecting the true mechanical behavior of the material at each position of the wheel assembly under different load paths, thereby avoiding analysis deviations caused by inaccurate material parameters.

[0014] In one possible approach, based on the motion constraints of the punch rigid body model, before applying an impact force to the wheel assembly simulation model through the punch rigid body model to perform impact force simulation on the wheel assembly simulation model, the method also includes: setting the impact analysis time, field output, and process output during the impact force simulation process.

[0015] According to the above technical means, the present application can avoid missing important mechanical responses due to too short a time setting, or wasting computing resources and distorting results due to too long a time setting by reasonably setting the impact analysis time. In addition, by setting the field output and process output, the changes in the mechanical state of the wheel during the impact process can be fully and accurately described, providing a reliable basis for subsequent analysis.

[0016] In one possible approach, the wheel assembly simulation model is constructed in the following manner: obtaining a tire simulation model and a wheel hub simulation model; integrating the tire simulation model and the wheel hub simulation model based on a constraint relationship to obtain an initial wheel assembly simulation model, where the constraint relationship is the constraint relationship between the tire and the wheel hub in the wheel assembly; inflating the tire in the initial wheel assembly simulation model, and applying an assembly preload force to the wheel hub and the tire to obtain the wheel assembly simulation model.

[0017] Based on the above technical means, the present application can construct a wheel assembly simulation model by integrating tire and wheel hub models, avoiding the problems of mechanical transmission distortion and incomplete boundary conditions caused by simulation analysis methods without tires or with simplified tires in related technologies. Therefore, the present application can improve the simulation accuracy and reliability of wheels.

[0018] According to the second aspect provided by the present application, an impact force simulation device for a wheel assembly is provided, comprising: a construction unit and a processing unit; the construction unit is used to construct a punch rigid body model and a wheel assembly simulation model; wherein the wheel assembly simulation model is used to characterize a wheel with a tire and a wheel hub, and the wheel hub and the tire have been applied with an assembly preload, and the tire has been inflated; the processing unit is used to apply an impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraint conditions of the punch rigid body model, so as to perform impact force simulation on the wheel assembly simulation model and obtain an explicit analysis result of the wheel assembly simulation model; the motion constraint conditions of the punch rigid body model are used to constrain the punch rigid body model to move only in the radial direction of the tire; the explicit analysis result is used to characterize the physical response characteristics of the wheel assembly simulation model during the impact force simulation process; the processing unit is also used to perform implicit analysis on the explicit analysis result to obtain the plastic deformation of the inner rim of the wheel.

[0019] In one possible embodiment, the processing unit is also used to establish an elastic connection between the wheel mounting plate portion of the assembly and the punch rigid body model at a target coordinate point, and set the connection stiffness of the elastic connection to a preset stiffness; wherein the target coordinate point is any coordinate point on the impact path.

[0020] In one possible embodiment, the processing unit is specifically used to: determine the field output data and process output data of the wheel assembly simulation model during the impact force simulation process; the field output data is used to represent the state data of the wheel assembly simulation model at a preset time; the process output data is used to represent the state data of the preset position of the wheel assembly simulation model changing with time; based on the field output data and the process output data, determine the explicit analysis results.

[0021] In one possible approach, the processing unit is specifically used to: determine the material parameters of each position of the wheel assembly; the material parameters are used to characterize the mechanical behavior of the material under mechanical loads; based on the material parameters, perform explicit analysis on the field output data and the process output data to obtain explicit analysis results.

[0022] In one possible embodiment, the processing unit is further configured to set the impact analysis time, field output, and history output during the impact force simulation process.

[0023] In one possible approach, a construction unit is specifically used to: obtain a tire simulation model and a wheel hub simulation model; integrate the tire simulation model and the wheel hub simulation model based on a constraint relationship to obtain an initial wheel assembly simulation model, where the constraint relationship is the constraint relationship between the tire and the wheel hub in the wheel assembly; inflate the tire in the initial wheel assembly simulation model, and apply an assembly preload force to the wheel hub and the tire to obtain a wheel assembly simulation model.

[0024] According to the third aspect provided by the present application, an electronic device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute instructions to implement the method of the above-mentioned first aspect and any possible implementation method thereof.

[0025] According to the fourth aspect provided by the present application, a computer-readable storage medium is provided. When the instructions in the computer-readable storage medium are executed by the processor of an electronic device, the electronic device is enabled to execute the method in the above-mentioned first aspect and any possible implementation method thereof.

[0026] According to the fifth aspect provided by the present application, a computer program product is provided, which includes computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the method of the above-mentioned first aspect and any possible implementation method thereof.

[0027] It should be noted that the technical effects brought about by any implementation method in the second to fifth aspects can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here.

[0028] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0030] Figure 1 is a schematic diagram of an impact force simulation system for a vehicle wheel assembly according to an exemplary embodiment;

[0031] Figure 2 is a flow chart showing a method for simulating impact force of a wheel assembly according to an exemplary embodiment;

[0032] Figure 3 is a schematic diagram showing a stable strain result of an inner rim of a wheel according to an exemplary embodiment;

[0033] Figure 4 is a schematic diagram showing a radial impact working condition according to an exemplary embodiment;

[0034] Figure 5 is a schematic diagram showing the distribution of plastic deformation of a wheel rim according to an exemplary embodiment;

[0035] Figure 6 is a schematic diagram illustrating a process for simulating impact force of a wheel assembly according to an exemplary embodiment;

[0036] Figure 7 is a block diagram of a device for simulating impact force of a wheel assembly according to an exemplary embodiment;

[0037] Figure 8 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0038] In order to enable ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0039] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0040] For ease of understanding, the impact force simulation method of the wheel assembly provided in this application is specifically introduced below with reference to the accompanying drawings.

[0041] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0042] The impact force simulation method for a wheel assembly provided in an embodiment of the present application can be applied to the impact force simulation of a wheel assembly of a vehicle. A vehicle may also be referred to as a vehicle, a mobile carrier, an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), a fuel cell vehicle (FCV), an autonomous vehicle, an intelligent and connected vehicle (ICV), a driverless vehicle, etc.

[0043] In the embodiments of this application, the vehicle may be a sedan, a sport utility vehicle (SUV), a truck, an electric vehicle, a motorcycle, a tricycle, a special vehicle (such as an ambulance, fire truck, or police car), a driverless taxi, an intelligent connected bus, an autonomous logistics vehicle, an electric truck, etc. Furthermore, this method is also applicable to various specialized vehicles, such as agricultural vehicles, mining vehicles, forestry vehicles, airport vehicles, and port vehicles. This application does not impose any specific limitations on this.

[0044] like Figure 1 As shown, Figure 1The impact force simulation system of the wheel assembly of the vehicle includes an impact force simulation device 101 and a data acquisition device 102.

[0045] Optionally, Figure 1 A communication connection can be established between the impact force simulation device 101 and the data acquisition device 102.

[0046] In practical applications, the impact force simulation device 101 may be communicatively connected to one or more data acquisition devices 102 .

[0047] For ease of understanding, this application takes the communication connection between an impact force simulation device 101 and a data acquisition device 102 as an example for explanation.

[0048] Optional, Figure 1 The impact force simulation device 101 and the data acquisition device 102 can be functional modules integrated into the same device, or can be devices independently provided. This application does not impose any restrictions on this.

[0049] It's easy to understand that when the impact simulation device 101 and the data acquisition device 102 are functional modules integrated into the same device, the communication between them is that between internal modules of the device. In this case, the communication process between them is the same as the communication process when the impact simulation device 101 and the data acquisition device 102 are independently configured.

[0050] For ease of understanding, this application is mainly explained by taking the example of the impact force simulation device 101 and the data acquisition device 102 being independently configured.

[0051] Figure 1 The data acquisition device 102 can obtain the parameters of the punch rigid body and the parameters of the wheel assembly, and send the parameters of the punch rigid body and the parameters of the wheel assembly to the impact force simulation device 101. The impact force simulation device 101 can construct a punch rigid body model and a wheel assembly simulation model based on the parameters of the punch rigid body and the parameters of the wheel assembly, and based on the motion constraints of the punch rigid body model, apply an impact force to the wheel assembly simulation model through the punch rigid body model to perform impact force simulation on the wheel assembly simulation model, obtain explicit analysis results of the wheel assembly simulation model, and further perform implicit analysis on the explicit analysis results to obtain the plastic deformation of the inner rim of the wheel.

[0052] Optionally, Figure 1 The impact force simulation device 101 may be a terminal, a server, or other types of electronic equipment. Figure 1What is shown in the figure is only an example of the device form of the impact force simulation device 101 and does not constitute a limitation thereto.

[0053] When the impact force simulation device 101 is a terminal, the terminal can be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem. The terminal can communicate with one or more core networks via a radio access network (RAN). The terminal can be a mobile terminal, such as a computer with a mobile terminal that exchanges voice and / or data with a radio access network, for example, a mobile phone, tablet computer, laptop computer, netbook, or personal digital assistant (PDA). This application does not impose any restrictions on this.

[0054] When the wheel assembly impact force simulation device 101 is a server, the server can be a single server, or a server cluster composed of multiple servers. In some embodiments, the server cluster can also be a distributed cluster. This application does not impose any restrictions on this.

[0055] It should be noted that the structure illustrated in the embodiments of this application does not limit the impact force simulation system for a vehicle wheel assembly. The system may include more or fewer components than shown, or some components may be combined or separated, or arranged differently. The illustrated components may be implemented in hardware, software, or a combination of both.

[0056] Figure 2 FIG. 1 is a flow chart showing a method for simulating impact force of a wheel assembly according to an exemplary embodiment. Figure 2 As shown, the impact force simulation method of the wheel assembly includes the following steps:

[0057] S201, constructing a punch rigid body model and a wheel assembly simulation model.

[0058] The wheel assembly simulation model is used to represent the wheel assembly with a tire and a wheel hub, and the wheel hub and tire have been preloaded and the tire has been inflated.

[0059] Optionally, the punch may be a V-shaped punch or a U-shaped punch, but this application does not impose any specific restrictions on this.

[0060] In one possible implementation, the impact force simulation device obtains a tire simulation model and a wheel hub simulation model.

[0061] Optionally, the impact force simulation device can obtain a constructed tire simulation model and a wheel hub simulation model, or obtain relevant data of the tire and the wheel hub, and construct a tire simulation model based on the relevant data of the tire, and construct a wheel hub simulation model based on the simulation model of the wheel hub.

[0062] The tire and wheel hub related data may include:

[0063] (1) When the tire is assembled on the wheel hub, the tire profile data, internal rubber surface layer distribution data, reinforcement layer distribution data and density data.

[0064] (2) Hyperelastic material parameters of various tire rubber surfaces and elastic material parameters of the reinforcement layer.

[0065] (3) Wheel elastic-plastic material parameters.

[0066] (4) The interference fit between the tire and the wheel hub.

[0067] (5) Measured modal data and radial stiffness data of the tire.

[0068] In a possible implementation, the impact force simulation device may integrate the tire simulation model and the wheel hub simulation model based on a constraint relationship to obtain an initial wheel assembly simulation model.

[0069] Among them, the constraint relationship is the constraint relationship between the tire and the wheel hub in the wheel assembly. The constraint relationship between the tire and the wheel hub can include at least a first sub-constraint and a second sub-constraint. The first sub-constraint is used to characterize the friction contact constraint between the tire and the wheel hub. The second sub-constraint is used to characterize the constraint on the fluid cavity between the tire and the wheel hub. The friction contact constraint may include the friction contact relationship and friction coefficient between the tire and the wheel hub. The friction contact relationship may include the contact position and contact area between the tire and the wheel hub. The constraint of the fluid cavity can be used to characterize the constraint on the gas or liquid medium between the tire and the wheel hub.

[0070] In a possible implementation, the tire in the initial wheel assembly simulation model is inflated, and an assembly preload force is applied to the wheel hub and the tire to obtain the wheel assembly simulation model.

[0071] Among them, the assembly preload refers to the continuous positive pressure between the tire and the wheel hub during the assembly process of the tire and the wheel hub.

[0072] Optionally, the assembly preload force may be determined by applying a temperature load to an initial wheel assembly simulation model for simulation, or may be determined by actual parameters, which is not specifically limited in this application.

[0073] Optionally, the inflation pressure for inflating the tire can be set according to actual needs. For example, the inflation pressure can be 250 kilopascals (kPa) or 220 kPa. This application does not impose any specific restrictions on this.

[0074] In one embodiment, the punch rigid body model is constructed in the following manner:

[0075] In a possible implementation, the impact force simulation device can obtain the punch parameters of the punch.

[0076] The punch parameters may include the punch tip angle, the punch tip fillet radius, the punch height, etc.

[0077] In one possible implementation, the impact force simulation device can draw a punch profile (e.g., V-shaped or U-shaped) in simulation software and generate a three-dimensional punch model. The impact force simulation device can set the three-dimensional punch model as a rigid body in the simulation software to ignore the deformation behavior of the punch.

[0078] In one possible implementation, the impact force simulation device can set the friction coefficient and motion constraint conditions of the punch in the simulation software to obtain a rigid body model of the punch.

[0079] Among them, the motion constraint conditions of the punch rigid body model are used to constrain the punch rigid body model to move only along the radial direction of the tire.

[0080] S202. Based on the motion constraint conditions of the punch rigid body model, an impact force is applied to the wheel assembly simulation model through the punch rigid body model to perform impact force simulation on the wheel assembly simulation model and obtain an explicit analysis result of the wheel assembly simulation model.

[0081] Explicit analysis results can be used to characterize the physical response of the wheel assembly simulation model during impact stress simulation. These results can include stable strain results of the wheel rim, stress distribution, displacement distribution, and temperature distribution of the wheel assembly simulation model.

[0082] For example, the wheel inner rim stable strain result is as follows Figure 3 shown. Figure 3 The stable strain results for the inner wheel rim are shown. For example, the maximum strain result is 0.4033%, indicating that the maximum deformation ratio of the inner wheel rim relative to its original size is 0.4033%. Strain results at other locations include 0.2017%, 0.1681%, 0.06722%, and 0.

[0083] In one possible implementation method, based on the motion constraint conditions of the punch rigid body model, an impact force is applied to the wheel assembly simulation model through the punch rigid body model to perform impact force simulation on the wheel assembly simulation model. Before obtaining the stable strain result of the inner rim of the wheel, the impact force simulation device can set the impact analysis time, field output and process output during the impact force simulation process.

[0084] The impact analysis time can include the total analysis time and the time increment. The total analysis time can be used to represent the simulation duration, i.e., the time from the start of the impact to the end of the impact. The time increment can be used to represent the time interval between each calculation step in the simulation.

[0085] Field output is used to output the displacement, stress, strain, temperature and other result data of the entire wheel assembly simulation model or a partial area at each calculation step or specific time point of the simulation. These data represent the overall state of the analysis model at a specific moment, that is, to analyze the spatial distribution and changes of the overall state of the wheel assembly simulation model.

[0086] History output is used to output the displacement, velocity, acceleration, reaction force and other time-varying data of the preset position during the simulation process. These data represent the time variation of the preset position and can be used for time variation analysis.

[0087] Optionally, the total analysis time can be set according to actual needs. For example, the total analysis time can be 0.005 seconds or 0.0005 seconds. This application does not impose specific restrictions on this.

[0088] Optionally, the time increment can be set according to actual needs. For example, the time increment can be 0.00002 seconds or 0.000001 seconds. This application does not impose specific restrictions on this.

[0089] In another possible implementation, the impact force simulation device may set an impact velocity corresponding to the test requirements for the punch simulation model.

[0090] For example, the impact force simulation device may be set to an impact speed of 5 meters per second (m / s) or 10 m / s, which is not specifically limited in this application.

[0091] In one possible implementation method, the impact force simulation device can apply impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraint conditions of the punch rigid body model, so as to simulate the impact force of the wheel assembly simulation model and determine the field output data and process output data of the wheel assembly simulation model during the impact force simulation process.

[0092] Field output data can be used to represent the state data of the wheel assembly simulation model at a preset time, including the stress, strain, temperature, and other result data of the wheel assembly simulation model at the preset time. History output data is used to represent the state of the wheel assembly simulation model at a preset position over time, including the displacement, velocity, acceleration, reaction force, and other data at the preset position over time.

[0093] For example, Figure 4 As shown, Figure 4 The radial impact working condition includes a V-shaped punch 41, a wheel hub 42, a tire 43, a wheel mounting surface 431, an inner edge of the wheel 432, a shock absorber 44, and a mounting base 45.

[0094] In one possible implementation, in order to determine the explicit analysis results based on the field output data and the history output data, the impact force simulation model may determine the material parameters of each position of the wheel assembly simulation model.

[0095] Among them, material parameters can be used to characterize the mechanical behavior of materials under mechanical loads, including the yield strength, hardening coefficient, elastic modulus, fracture strain, etc.

[0096] In a possible implementation, the impact force simulation model may perform explicit analysis on the field output data and the process output data based on material parameters to obtain explicit analysis results.

[0097] In one example, an impact stress simulation device can extract the maximum stress value and location of the wheel assembly at each preset time from the field output data and determine whether strain exists based on material parameters. For example, if the material yield strength is 235 megapascals (MPa), and the stress in a certain area during the simulation reaches 250 MPa (exceeding the yield strength), it can be determined that the area has entered the plastic deformation stage and is at risk of plastic strain.

[0098] In another example, the impact force simulation device can extract the strain distribution of each position in the wheel assembly simulation model at different times and the fracture strain of the material (such as 0.2) from the process output data to analyze the deformation degree and potential damage of the wheel assembly simulation model under impact force simulation.

[0099] In another example, the impact stress simulation device can extract a stress-over-time curve at a preset location and calculate parameters such as maximum stress, average stress, and stress amplitude. The impact stress simulation device can analyze the fatigue life of the preset location based on the material's fatigue limit, as well as the maximum stress, average stress, and stress amplitude. For example, if the material's fatigue limit is 180 MPa, the maximum stress at the wheel assembly's contact point with the ground is 300 MPa, the average stress is 150 MPa, and the stress amplitude is 150 MPa.

[0100] In a possible implementation, before determining the explicit analysis structure, the impact force simulation device may pre-process the field output data and the history output data.

[0101] Specifically, the impact force simulation device can perform data integrity detection on the field output data and the process output data, and perform data filtering on the field output data and the process output data to eliminate abnormal data caused by noise interference during the simulation process.

[0102] For example, the impact force simulation device can check the completeness of stress, strain, displacement, velocity, acceleration, and other data at each preset time (e.g., 0s, 0.00001s, 0.00002s, etc.) in the field output data. For example, if the stress data for the rim is missing at a certain time, it is necessary to check whether there is an error in the simulation model or an anomaly in the data storage. The impact force simulation device can also confirm the continuity of the data sequence of state data (e.g., stress and deformation) at preset locations (e.g., the connection point between the rim and the spoke, the contact point between the tire and the ground) over time.

[0103] In one possible implementation, the impact force simulation device may perform explicit analysis on the filtered field output data and the filtered history output data based on material parameters to obtain explicit analysis results.

[0104] S203. Perform implicit analysis on the explicit analysis results to obtain the plastic deformation of the inner rim of the wheel.

[0105] Implicit analysis is a numerical method used in finite element analysis to solve static or quasi-static problems. Its core is to directly calculate the displacement, stress, and strain of a structure in equilibrium by iteratively solving a system of nonlinear equations. Compared with explicit analysis, implicit analysis is more suitable for analyzing steady-state responses involving material nonlinearity, large geometric deformations, or contact problems.

[0106] In one possible implementation, the impact simulation device can extract stress, strain, and displacement field data from the explicit analysis results and import them as initial conditions for the implicit analysis. In the implicit analysis, the impact simulation device can define material parameters and calculate the plastic deformation of the wheel rim based on the stress state of the wheel rim from the explicit analysis results.

[0107] For example, the plastic deformation of the inner rim of the wheel is as follows: Figure 5 The unit is millimeters. The maximum plastic deformation is +1.062e+01, or 10.62 mm.

[0108] Based on the above technical solution, the present application can construct real boundary conditions (preload stress distribution, air pressure load) through the vehicle assembly simulation model to accurately reflect the mechanical properties of the actual wheel during the simulation process, and realize efficient simulation of the dynamic impact process and accurate prediction of static plastic deformation through explicit-implicit joint analysis.

[0109] In some embodiments, as Figure 6 As shown, Figure 6 The impact force simulation process of the wheel assembly includes the following steps: S601-S606.

[0110] S601: Obtain a wheel assembly simulation model.

[0111] S602: Based on the punch parameters, a punch rigid body model is constructed, and an impact force simulation environment is constructed.

[0112] S603, set field output and process output.

[0113] S604: Determine the explicit analysis result.

[0114] S605. Extract stable strain results from explicit analysis results.

[0115] S606. Perform implicit analysis based on the explicit analysis results to obtain the plastic deformation.

[0116] Figure 7 FIG1 is a block diagram of a device for simulating the impact force of a wheel assembly according to an exemplary embodiment. Figure 7 The wheel assembly impact force simulation device includes: a construction unit 701 and a processing unit 702.

[0117] In one possible approach, the construction unit 701 is used to construct a punch rigid body model and a wheel assembly simulation model.

[0118] In one possible embodiment, the processing unit 702 is used to apply an impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraint conditions of the punch rigid body model, so as to simulate the impact force of the wheel assembly simulation model and obtain an explicit analysis result of the wheel assembly simulation model.

[0119] In one possible manner, the processing unit 702 is further configured to perform implicit analysis on the explicit analysis result to obtain the plastic deformation of the inner rim of the wheel.

[0120] In one possible embodiment, the processing unit 702 is further configured to establish an elastic connection between the wheel mounting plate portion of the assembly and the punch rigid body model at a target coordinate point, and to set the connection stiffness of the elastic connection to a preset stiffness.

[0121] In one possible embodiment, the processing unit 702 is specifically configured to determine the field output data and the process output data of the wheel assembly simulation model during the impact force simulation process, and determine an explicit analysis result based on the field output data and the process output data.

[0122] In one possible embodiment, the processing unit 702 is specifically configured to determine material parameters at various locations of the wheel assembly, and perform explicit analysis on the field output data and the process output data based on the material parameters to obtain explicit analysis results.

[0123] In one possible manner, the processing unit 702 is further configured to set the impact analysis time, field output, and history output during the impact force simulation process.

[0124] In one possible embodiment, construction unit 701 is specifically configured to obtain a tire simulation model and a wheel hub simulation model. Based on a constraint relationship, the tire simulation model and the wheel hub simulation model are integrated to obtain an initial wheel assembly simulation model. The tire in the initial wheel assembly simulation model is inflated, and an assembly preload is applied to the wheel hub and tire to obtain the wheel assembly simulation model.

[0125] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0126] Figure 8 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 8 As shown, the electronic device includes but is not limited to: a processor 801 and a memory 802 .

[0127] The memory 802 is used to store executable instructions of the processor 801. It is understandable that the processor 801 is configured to execute instructions to implement the impact force simulation method of the wheel assembly in the above embodiment.

[0128] It should be noted that those skilled in the art can understand that Figure 8 The electronic device structure shown in the figure does not limit the electronic device, and the electronic device may include Figure 8 More or fewer components may be shown, or certain components may be combined, or the components may be arranged differently.

[0129] The processor 801 is the control center of the electronic device. It connects the various parts of the entire electronic device using various interfaces and lines. By running or executing software programs and / or modules stored in the memory 802 and calling data stored in the memory 802, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 801 may include one or more processing units. Optionally, the processor 801 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly handles wireless communications. It is understood that the above-mentioned modem processor may not be integrated into the processor 801.

[0130] Memory 802 can be used to store software programs and various data. Memory 802 may primarily include a program storage area and a data storage area. The program storage area may store an operating system and application programs required by at least one functional module (such as a determination unit, a processing unit, etc.). Furthermore, memory 802 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0131] In an exemplary embodiment, a computer-readable storage medium including instructions is further provided, such as a memory 802 including instructions. The above instructions can be executed by a processor 801 of an electronic device to implement the method in the above embodiment.

[0132] In actual implementation, Figure 7 The functions of the construction unit 701 and the processing unit 702 can be represented by Figure 8 The processor 801 in the embodiment calls the computer program stored in the memory 802. The specific execution process can be referred to the description of the method part in the above embodiment, which will not be repeated here.

[0133] Optionally, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, etc.

[0134] In an exemplary embodiment, the present application also provides a computer program product including one or more instructions, which can be executed by the processor 801 of the electronic device to implement the method in the above embodiment.

[0135] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above-mentioned method embodiment are implemented and the same technical effect as the above-mentioned method can be achieved. To avoid repetition, they will not be repeated here.

[0136] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete the full classification or partial functions described above.

[0137] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0138] The units described as separate components may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0139] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0140] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application, or the part that contributes to the prior art, or the entire classification part or part of the technical solution can be embodied in the form of a software product. The software product is stored in a storage medium and includes a number of instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute the entire classification part or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, disk or optical disk, etc., various media that can store program code.

[0141] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for simulating the impact force of a wheel assembly, characterized in that: The method comprises: Constructing a punch rigid body model and a wheel assembly simulation model; wherein the wheel assembly simulation model is used to represent a wheel with a tire and a wheel hub, and the wheel hub and the tire have been subjected to an assembly preload force, and the tire has been inflated; Establishing an elastic connection between the wheel mounting plate portion of the wheel assembly simulation model and the punch rigid body model at a target coordinate point, and setting the connection stiffness of the elastic connection to a preset stiffness; wherein the target coordinate point is any coordinate point on the impact path; Based on the motion constraints of the punch rigid body model, an impact force is applied to the wheel assembly simulation model via the punch rigid body model to perform impact force simulation on the wheel assembly simulation model, thereby obtaining an explicit analysis result of the wheel assembly simulation model; the motion constraints of the punch rigid body model are used to constrain the punch rigid body model to move only in the radial direction of the tire; and the explicit analysis result is used to characterize the physical response characteristics of the wheel assembly simulation model during the impact force simulation process; An implicit analysis is performed on the explicit analysis result to obtain the plastic deformation of the inner rim of the wheel.

2. The method according to claim 1, characterized in that The explicit analysis results include at least the wheel inner rim stable strain results.

3. The method according to claim 1, characterized in that The method of applying an impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraint conditions of the punch rigid body model to perform impact force simulation on the wheel assembly simulation model and obtain explicit analysis results of the wheel assembly simulation model includes: Determining field output data and process output data of the wheel assembly simulation model during the impact force simulation process; the field output data is used to represent state data of the wheel assembly simulation model at a preset time; the process output data is used to represent data on changes in the state of a preset position of the wheel assembly simulation model over time; The explicit analysis result is determined based on the field output data and the history output data.

4. The method according to claim 3, characterized in that The determining the explicit analysis result based on the field output data and the history output data includes: Determining material parameters at various locations of the wheel assembly; the material parameters are used to characterize the mechanical behavior of the material under mechanical load; Based on the material parameters, the field output data and the history output data are explicitly analyzed to obtain the explicit analysis results.

5. The method according to claim 3, characterized in that Before applying an impact force to the wheel assembly simulation model through the punch rigid body model based on the motion constraint conditions of the punch rigid body model to perform impact force simulation on the wheel assembly simulation model, the method further includes: Set the impact analysis time, field output, and history output during the impact force simulation.

6. The method according to claim 1, characterized in that The wheel assembly simulation model is constructed in the following way: Obtain tire simulation models and wheel hub simulation models; Integrating the tire simulation model and the wheel hub simulation model based on a constraint relationship to obtain an initial wheel assembly simulation model, wherein the constraint relationship is a constraint relationship between the tire and the wheel hub in the wheel assembly; The tire in the initial wheel assembly simulation model is inflated, and an assembly preload force is applied to the wheel hub and the tire to obtain the wheel assembly simulation model.

7. A wheel assembly impact force simulation device, characterized in that: The device comprises: a construction unit and a processing unit; The construction unit is used to construct a punch rigid body model and a wheel assembly simulation model; wherein the wheel assembly simulation model is used to represent a wheel with a tire and a wheel hub, and the wheel hub and the tire have been subjected to an assembly preload force, and the tire has been inflated; The processing unit is configured to establish an elastic connection between the wheel mounting plate portion of the wheel assembly simulation model and the punch rigid body model at a target coordinate point, and set a connection stiffness of the elastic connection to a preset stiffness; wherein the target coordinate point is any coordinate point on the impact path; The processing unit is further configured to apply an impact force to the wheel assembly simulation model via the punch rigid body model based on the motion constraint conditions of the punch rigid body model, so as to perform an impact force simulation on the wheel assembly simulation model and obtain an explicit analysis result of the wheel assembly simulation model; the motion constraint conditions of the punch rigid body model are configured to constrain the punch rigid body model to move only in the radial direction of the tire; and the explicit analysis result is configured to characterize the physical response characteristics of the wheel assembly simulation model during the impact force simulation process; The processing unit is further configured to perform implicit analysis on the explicit analysis result to obtain the amount of plastic deformation of the inner rim of the wheel.

8. The impact force simulation device according to claim 7, characterized in that: The processing unit is specifically configured to: Determining field output data and process output data of the wheel assembly simulation model during the impact force simulation process; the field output data is used to represent state data of the wheel assembly simulation model at a preset time; The history output data is used to represent the state of the preset position of the wheel assembly simulation model changing over time; The explicit analysis result is determined based on the field output data and the history output data.

9. The impact force simulation device according to claim 8, characterized in that: The processing unit is specifically configured to: Determining material parameters at various locations of the wheel assembly; the material parameters are used to characterize the mechanical behavior of the material under mechanical load; Based on the material parameters, the field output data and the history output data are explicitly analyzed to obtain the explicit analysis results.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method according to any one of claims 1 to 6.

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