Simulation method, device and equipment and computer readable storage medium

Abstract

The invention discloses a simulation method, device and equipment and a computer readable storage medium, and relates to the technical field of simulation, and the simulation method comprises the steps: building a finite element assembly model of a vehicle door metal plate assembly and a door protection plate assembly according to a stress-strain curve of a door protection plate upper cover material at a preset temperature and stress-strain curves of other part materials at a normal temperature; applying preset displacement pointing to the other end to the most protruding surface of the front / rear end of the upper cover of the door protection plate, and submitting ABAQUS simulation solution; the preset displacement is set according to the maximum deformation of the door guard plate upper cover; and if the whole vehicle X-direction deformation amount of the door guard plate upper cover is smaller than the preset displacement amount, it is judged that the door guard plate upper cover meets the design requirement. According to the application, simulation analysis can be performed on the door guard plate upper cover at the beginning of design, so that whether the door guard plate upper cover swells out of a normal mounting position under high-temperature exposure can be identified in advance, and a verification means for scheme optimization is provided for a designer.

Description

Technical Field

[0001] The present application relates to the field of simulation technology, and in particular to a simulation method, apparatus, device and computer-readable storage medium. Background Art

[0002] As the Chinese auto market matures, consumers have higher and higher requirements for vehicle quality. Compared with the past, consumers pay more attention to vehicle quality, safety, comfort and other aspects, and are more picky about vehicle details and defects. At present, during the development of vehicle models, it is found that the upper cover of the door guard plate is prone to thermal expansion and deformation under high temperature exposure, causing the upper cover of the door guard plate to bulge out of the normal installation position, causing serious problems in the appearance quality of the vehicle. In addition, the problem of deformation and bulging of the upper cover of the door guard plate on the actual vehicle cannot be identified in advance during the design stage of the upper cover of the door guard plate.

[0003] In the related art, for the deformation problem of the upper cover of the door guard plate, most of the time, after the problem is identified in the actual vehicle stage, the designer makes partial changes to the relevant parts based on experience, and trial-produces new parts, and then conducts tests and verifications. However, this method is not only time-consuming and labor-intensive, but also cannot adapt to the increasingly fast development cycle, and will also increase development costs. Summary of the invention

[0004] The present application provides a simulation method, device, equipment and computer-readable storage medium, which can solve the technical problems in the prior art that the door guard plate upper cover verification process is time-consuming and labor-intensive, and has high development costs.

[0005] In a first aspect, the present application provides a simulation method, the simulation method comprising:

[0006] According to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, a finite element assembly model of the door sheet metal assembly and the door guard panel assembly is established;

[0007] Apply a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement amount is set according to the maximum deformation amount of the upper cover of the door guard plate;

[0008] If the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement, it is determined that the door guard panel upper cover meets the design requirements.

[0009] In combination with the first aspect, in one implementation, before establishing the finite element assembly model of the door sheet metal assembly and the door guard assembly, the method further includes:

[0010] A tensile test of the door guard plate upper cover material is performed at the above-mentioned preset temperature to obtain a stress-strain curve of the door guard plate upper cover material at the preset temperature.

[0011] In combination with the first aspect, in one embodiment, applying a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate specifically includes:

[0012] A rigid unit is established at all nodes on the most protruding surface of the rear end of the upper cover of the door guard plate, and the main node of the rigid unit is used as the loading point to apply a preset displacement along the negative X direction of the vehicle; or,

[0013] A rigid unit is established at all nodes on the most protruding surface of the front end of the upper cover of the door guard plate, and the main node of the rigid unit is used as a loading point to apply a preset displacement along the positive X direction of the whole vehicle.

[0014] In combination with the first aspect, in one implementation, before applying the preset displacement, the method further includes:

[0015] Obtain the changes in the X direction of the door guard covers of multiple similar models under high temperature test of components;

[0016] The average value of the multiple changes is taken as the maximum deformation of the upper cover of the door guard plate.

[0017] In combination with the first aspect, in one implementation, the preset displacement is the maximum deformation of the upper cover of the door guard plate.

[0018] In combination with the first aspect, in one implementation, the temperature of the high temperature test is the same as the preset temperature.

[0019] In combination with the first aspect, in one implementation, after submitting the ABAQUS simulation solution, the method further includes:

[0020] If the vehicle X-direction deformation of the door guard panel upper cover is greater than or equal to the preset displacement, the door guard panel upper cover is structurally optimized and the finite element assembly model is re-established until the vehicle X-direction deformation of the door guard panel upper cover is less than the preset displacement.

[0021] In a second aspect, the present application provides a simulation device, the simulation device comprising:

[0022] A finite element assembly model module, which is used to establish a finite element assembly model of a door sheet metal assembly and a door guard assembly according to a stress-strain curve of a door guard upper cover material at a preset temperature and a stress-strain curve of other materials at room temperature;

[0023] A solution module, which is used to apply a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement amount is set according to the maximum deformation amount of the upper cover of the door guard plate;

[0024] The judgment module determines that the door guard panel upper cover meets the design requirements if the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement.

[0025] In combination with the second aspect, in one embodiment, the simulation device further includes an acquisition module, which is used to: perform a tensile test on the door panel upper cover material at the preset temperature to obtain a stress-strain curve of the door panel upper cover material at the preset temperature.

[0026] In a third aspect, the present application provides a simulation device, the simulation device comprising a processor, a memory, and a simulation program stored in the memory and executable by the processor, wherein when the simulation program is executed by the processor, the following steps of the simulation method are implemented:

[0027] According to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, a finite element assembly model of the door sheet metal assembly and the door guard panel assembly is established;

[0028] Apply a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement amount is set according to the maximum deformation amount of the upper cover of the door guard plate;

[0029] If the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement, it is determined that the door guard panel upper cover meets the design requirements.

[0030] Preferably, the processor executes the simulation program in the memory to implement other steps in the simulation method.

[0031] In a fourth aspect, the present application provides a computer-readable storage medium, on which a simulation program is stored, wherein when the simulation program is executed by a processor, the steps of the simulation method as described above are implemented.

[0032] The beneficial effects of the technical solution provided by this application include:

[0033] The present application establishes a finite element assembly model of a vehicle door sheet metal assembly and a door guard assembly according to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, applies a preset displacement pointing to the other end to the most protruding surface of the front / rear end of the above-mentioned door guard panel upper cover, and submits it for ABAQUS simulation solution, thereby obtaining the X-direction deformation of the entire vehicle after the deformation of the door guard panel upper cover, and then judging whether the door guard panel upper cover meets the design requirements according to the relationship between the X-direction deformation and the preset displacement; therefore, the door guard panel upper cover can be simulated and analyzed at the beginning of its design to identify in advance whether the door guard panel upper cover will bulge out of the normal installation position under high temperature exposure, and provide designers with verification means for optimized solutions to ensure that the door guard panel upper cover will not bulge out of the normal installation position in the actual vehicle stage, thereby solving the technical problems in the related technology that the verification process of the door guard panel upper cover is time-consuming and labor-intensive, and the development cost is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a flow chart of an embodiment of a simulation method of the present application;

[0035] Figure 2 A schematic diagram of a flow chart of another embodiment of the simulation method of the present application;

[0036] Figure 3 A schematic diagram of functional modules of an embodiment of a simulation device of the present application;

[0037] Figure 4 This is a schematic diagram of the hardware structure of the simulation device involved in the embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] In a first aspect, an embodiment of the present application provides a simulation method.

[0040] In one embodiment, referring to Figure 1 , Figure 1 FIG. 1 is a flow chart of the first embodiment of the simulation method of the present application. Figure 1 As shown, the simulation method includes:

[0041] S1. Establish a finite element assembly model of the door sheet metal assembly and the door guard assembly based on the stress-strain curve of the door guard cover material at a preset temperature and the stress-strain curves of other parts materials at room temperature;

[0042] Among them, the above-mentioned other parts are: all parts of the door sheet metal assembly and the door guard panel assembly except the upper cover of the door guard panel.

[0043] S2. Apply a preset displacement to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement is set according to the maximum deformation of the upper cover of the door guard plate;

[0044] Optionally, a preset displacement along the negative X-direction (vehicle forward direction) of the vehicle coordinate system can be applied to the most protruding surface at the rear end of the upper cover of the above-mentioned door guard plate; in other embodiments, a preset displacement along the positive X-direction of the vehicle coordinate system can also be applied to the most protruding surface at the front end of the upper cover of the above-mentioned door guard plate.

[0045] S3. If the vehicle X-direction deformation of the door guard panel upper cover is less than the preset displacement, it is determined that the door guard panel upper cover meets the design requirements. The vehicle X-direction is the X direction of the vehicle coordinate system.

[0046] In the present embodiment, after establishing the finite element assembly model of the vehicle door sheet metal assembly and the door guard panel assembly according to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, a preset displacement pointing to the other end is applied to the most protruding surface of the front / rear end of the above-mentioned door guard panel upper cover, and the model is submitted to ABAQUS simulation solution, so as to obtain the X-direction deformation of the door guard panel upper cover after deformation, and then judge whether the door guard panel upper cover meets the design requirements according to the relationship between the X-direction deformation and the preset displacement; therefore, the door guard panel upper cover can be simulated and analyzed at the beginning of its design to identify in advance whether the door guard panel upper cover will bulge out of the normal installation position under high temperature exposure, and provide the designer with a verification means for scheme optimization to ensure that the door guard panel upper cover will not bulge out of the normal installation position in the actual vehicle stage, thereby solving the technical problems in the related technology that the verification process of the door guard panel upper cover is time-consuming and labor-intensive, and the development cost is high.

[0047] Furthermore, in one embodiment, in the above step S1, before establishing the finite element assembly model of the door sheet metal assembly and the door guard assembly, the following steps are further included:

[0048] A tensile test of the door guard plate upper cover material is performed at the above-mentioned preset temperature to obtain a stress-strain curve of the door guard plate upper cover material at the preset temperature.

[0049] In this embodiment, by obtaining in advance the stress-strain curve of the door guard panel upper cover material at a preset temperature and using it to establish a finite element assembly model of the door sheet metal assembly and the door guard panel assembly, static structural nonlinear analysis can be directly used to quickly obtain the X-direction deformation of the door guard panel upper cover for result judgment, without the need to perform modal analysis and thermal deformation analysis on the door guard panel upper cover.

[0050] Optionally, the above simulation method also includes: performing a tensile test on the materials of other components except the upper cover of the door guard plate at room temperature to obtain a stress-strain curve of each component material at room temperature.

[0051] Preferably, the normal temperature is 25°C.

[0052] Furthermore, in one embodiment, a preset displacement amount directed to the other end is applied to the most protruding surface of the front / rear end of the upper cover of the door guard plate, specifically including:

[0053] A rigid unit is established at all nodes on the most protruding surface of the rear end of the upper cover of the door guard plate, and the main node of the rigid unit is used as the loading point to apply a preset displacement along the negative X direction of the vehicle; or,

[0054] A rigid unit is established at all nodes on the most protruding surface of the front end of the upper cover of the door guard plate, and the main node of the rigid unit is used as a loading point to apply a preset displacement along the positive X direction of the whole vehicle.

[0055] It can be understood that the most protruding surface of the rear end of the upper cover is the surface formed by the contact point when the rear end of the upper cover extends to the adjacent window frame. Correspondingly, the most protruding surface of the front end of the upper cover is the surface formed by the contact point when the front end of the upper cover extends to the adjacent window frame.

[0056] Based on the above embodiment, in this embodiment, before applying the preset displacement in the above step S2, the following steps are also included:

[0057] First, obtain the changes in the X direction of the door guard cover of multiple similar models under the high temperature test of the components;

[0058] Then, the average value of the multiple changes is used as the maximum deformation of the upper cover of the door guard plate. Subsequently, the preset displacement to be applied can be determined according to the maximum deformation of the upper cover of the door guard plate.

[0059] In this embodiment, the average value of the change in the X-direction of the door guard cover of multiple similar models under high temperature tests is used as the maximum deformation of the door guard cover and the preset displacement is determined, which can effectively verify whether the designed door guard cover will bulge and deform under high temperature conditions of the actual vehicle, thereby affecting the appearance quality.

[0060] Furthermore, in one embodiment, the preset displacement is the maximum deformation of the upper cover of the door guard plate.

[0061] In other embodiments, the preset displacement may be slightly larger than the maximum deformation of the upper cover of the door guard plate.

[0062] Furthermore, in one embodiment, the temperature of the high temperature test is the same as the preset temperature.

[0063] In this embodiment, by setting the above-mentioned preset temperature to be the same as the temperature of the high temperature test, the expansion and deformation of the door guard plate upper cover under the high temperature state of the actual vehicle can be more realistically simulated.

[0064] Preferably, the temperature of the high temperature test and the preset temperature are both 85°C.

[0065] Furthermore, in one embodiment, after submitting the ABAQUS simulation solution, the following is further included:

[0066] If the vehicle X-direction deformation of the door guard panel upper cover is greater than or equal to the preset displacement, the door guard panel upper cover is structurally optimized, and then the finite element assembly model is re-established for simulation analysis until the vehicle X-direction deformation of the door guard panel upper cover is less than the preset displacement.

[0067] In this embodiment, for the door panel upper cover that does not meet the design requirements, an optimization scheme can be proposed based on the simulation results, and the optimization scheme can be simulated and analyzed again until the design requirements are met. This helps design engineers to identify the advantages and disadvantages of the design scheme during the design and development stage, and quickly optimize and iterate to obtain the optimal design scheme for the door panel upper cover.

[0068] It is understandable that at high temperatures, the material properties change due to factors such as increased thermal expansion coefficient, decreased material hardness, and increased elongation. Such changes make parts prone to deformation or loss of original properties, thus affecting normal production, and plastic parts are more affected by high temperatures.

[0069] In this embodiment, both ends of the door guard upper cover overlap the window frame, and when thermal expansion and deformation occur at high temperature, the window frame will be squeezed. Since the rigidity of the window frame is much higher than that of the door guard upper cover, the door guard upper cover with weaker rigidity will be deformed, that is, the door guard upper cover will bulge out. If the door guard upper cover structure is strengthened, the thermal expansion and deformation will be reduced, the force squeezing the window frame will also be reduced, and the probability of the door guard upper cover bulging will be much smaller.

[0070] like Figure 2 As shown, the simulation method of this embodiment includes:

[0071] A1. According to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, a finite element assembly model of the door sheet metal assembly and the door guard panel assembly is established;

[0072] A2. Apply a preset displacement along the negative X direction of the vehicle to the most protruding surface of the rear end of the upper cover of the door guard plate, and submit it to ABAQUS for simulation solution; the preset displacement is set according to the maximum deformation of the upper cover of the door guard plate;

[0073] A3. Determine whether the X-axis deformation of the upper cover of the door guard plate is less than the above-mentioned preset displacement. If so, proceed to A4; otherwise, proceed to A5.

[0074] A4. Determine that the upper cover of the door guard plate meets the design requirements and end.

[0075] A5. Optimize the structure of the door panel upper cover and then proceed to A1.

[0076] Furthermore, in one embodiment, the simulation method specifically includes:

[0077] Step 1: Divide the finite element mesh according to the 3D digital model of the door sheet metal assembly and the door guard assembly; there are many mesh division software currently, and there is no restriction on the mesh division tool software.

[0078] Among them, the door guard assembly is a plastic part, and the door sheet metal assembly is a sheet metal part. The grid division requirements are as follows:

[0079] 1) After extracting the neutral surface of the door guard assembly, the quadrilateral shell element is used to divide the mesh, and the mesh size is 5*5mm; components are established separately for areas with different material thicknesses, and attributes of different material thicknesses are assigned according to the actual situation of the digital model;

[0080] 2) After extracting the neutral surface of the door sheet metal assembly, the mesh is divided into quadrilateral shell elements with a mesh size of 8*8mm; different material thickness attributes are assigned according to the actual situation of the numerical model;

[0081] 3) Door hinges should be divided into hexahedral solid meshes as much as possible. Parts with irregular cross-sectional shapes that cannot be divided into hexahedral meshes should be divided into tetrahedral mesh units with a mesh size of 3*3mm.

[0082] Step 2: To avoid excessive stress concentration from interfering with the simulation results, both bolt connections and shaft connections need to be washed, and the washer nodes are rigidly bound using rigid units, with the main node being the washer center point.

[0083] Step 3: Create different attribute cards for each part except the upper cover of the door guard plate, and input the material true stress-strain curve of each part at room temperature;

[0084] Step 4: Create a property card for the upper cover of the door guard plate, and input the true stress-strain curve of the material at high temperature, i.e., 85° (consistent with the high temperature performance test temperature of the upper cover of the door guard plate);

[0085] Step 5, setting the loading area of ​​the door panel upper cover; since the structures at both ends of the door panel upper cover are not in a plane but in three dimensions, when the door panel upper cover expands due to thermal expansion, the first place that contacts the window frame is the most protruding position of the door panel upper cover at both ends. In this embodiment, the bulging position of the door panel upper cover of the actual vehicle is close to the rear end, indicating that the rigidity of the rear end of the door panel upper cover is weaker than that of the front end. Therefore, the rear end with weaker rigidity is selected for loading analysis; establish a rigid for all nodes on the most protruding surface of the rear end of the door panel upper cover, and its main node will be used as the subsequent loading point.

[0086] Step 6, setting loading conditions: simulate the door closed state, fully constrain the door hinges, constrain the door locks according to the actual vehicle state, and apply a forced displacement L along the negative X direction of the vehicle to the rigid master node established in step 5; L is the average value of the change in the X direction of the door guard cover of similar models before and after the high temperature test of the components, that is, the size of the forced displacement loaded in the simulation analysis is determined based on the average value.

[0087] Step 7, result evaluation: Check the deformation S of the door guard plate upper cover in the X direction (vehicle coordinate system). When S<L, it is determined that the design requirements are met, that is, the door guard plate upper cover will not deform under high temperature conditions of the actual vehicle and affect the appearance quality; otherwise, the design requirements are not met.

[0088] Among them, for the door panel upper cover that does not meet the design requirements, structural optimization can be proposed based on the simulation results, and the door panel upper cover solution after structural optimization can be simulated and analyzed again until it meets the design requirements.

[0089] Due to the fierce competition in the automobile market, major brands are constantly improving their own quality and product competitiveness to meet the growing quality demands of consumers. In this embodiment, in order to solve the problem that the upper cover of the door guard plate will expand and deform under high temperature exposure, which may cause the upper cover of the door guard plate to bulge out of the normal installation position, by dividing the door sheet metal assembly and the door guard assembly into grids, establishing a finite element assembly model of the connection relationship, setting the material parameters of each part, setting the loading area of ​​the upper cover of the door guard plate, setting the boundary conditions and loading, and evaluating the simulation results, it is possible to quickly verify whether the upper cover of the door guard plate will bulge and deform under the high temperature state of the actual vehicle to affect the appearance quality during the design stage of the upper cover of the door guard plate, and quickly and targetedly carry out the optimization design of the upper cover of the door guard plate to improve the optimization efficiency.

[0090] In a second aspect, an embodiment of the present application also provides a simulation device.

[0091] In one embodiment, referring to Figure 3 , Figure 3 This is a functional module diagram of an embodiment of the simulation device of the present application. Figure 3 As shown, the above-mentioned simulation device includes a finite element assembly model module, a solution module and a judgment module.

[0092] The above-mentioned finite element assembly model module is used to establish a finite element assembly model of the vehicle door sheet metal assembly and the door guard panel assembly according to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curves of other materials at room temperature.

[0093] The solution module is used to apply a preset displacement to the most protruding surface of the front / rear end of the upper cover of the door guard plate, pointing to the other end, and submit it to ABAQUS simulation solution; the preset displacement is set according to the maximum deformation of the upper cover of the door guard plate.

[0094] The judgment module is used to determine that the door guard panel upper cover meets the design requirements if the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement.

[0095] Furthermore, in one embodiment, the simulation device further includes an acquisition module, and the acquisition module is used to: perform a tensile test on the door panel upper cover material at the preset temperature to obtain a stress-strain curve of the door panel upper cover material at the preset temperature.

[0096] Furthermore, in one embodiment, the solution module is used to:

[0097] A rigid unit is established at all nodes on the most protruding surface of the rear end of the upper cover of the door guard plate, and the main node of the rigid unit is used as the loading point to apply a preset displacement along the negative X direction of the vehicle; or,

[0098] A rigid unit is established at all nodes on the most protruding surface of the front end of the upper cover of the door guard plate, and the main node of the rigid unit is used as a loading point to apply a preset displacement along the positive X direction of the whole vehicle.

[0099] Furthermore, in one embodiment, the acquisition module is also used for:

[0100] Obtain the changes of the upper covers of the door guard panels of multiple similar models in the X direction of the whole vehicle under the high temperature test of the parts; and use the average value of the multiple changes as the maximum deformation of the upper covers of the door guard panels.

[0101] Optionally, the preset displacement is the maximum deformation of the upper cover of the door guard plate.

[0102] Preferably, the temperature of the high temperature test is the same as the preset temperature, which is 85°C.

[0103] Furthermore, in one embodiment, the above-mentioned determination module is also used for:

[0104] If the vehicle X-direction deformation of the door guard panel upper cover is greater than or equal to the preset displacement, the door guard panel upper cover is structurally optimized and the finite element assembly model is re-established until the vehicle X-direction deformation of the door guard panel upper cover is less than the preset displacement.

[0105] In this embodiment, during the door guard plate design stage, it is possible to output a conclusion on whether the upper cover of the door guard plate will bulge and deform under high temperature through only 8 hours of computer software calculation and operation. This can not only quickly verify the design plan, but also save a lot of testing costs.

[0106] Among them, the functional implementation of each module in the above-mentioned simulation device corresponds to each step in the above-mentioned simulation method embodiment, and its functions and implementation processes are no longer repeated here.

[0107] In a third aspect, an embodiment of the present application provides a simulation device, which may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0108] Reference Figure 4 , Figure 4 The hardware structure diagram of the simulation device involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the simulation device may include a processor, a memory, a communication interface, and a communication bus.

[0109] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0110] The communication interface includes input / output (I / O) interface, physical interface and logical interface, which are used to realize the interconnection of devices inside the simulation device, and the interface used to realize the interconnection between the simulation device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0111] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0112] The processor may be a general-purpose processor, and the general-purpose processor may call the simulation program stored in the memory and execute the simulation method provided by the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the simulation program is called may refer to the various embodiments of the simulation method of the present application, and will not be repeated here.

[0113] Those skilled in the art will understand that Figure 4 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0114] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0115] The computer-readable storage medium of the present application stores a simulation program, wherein when the simulation program is executed by a processor, the steps of the simulation method described above are implemented.

[0116] Among them, the method implemented when the simulation program is executed can refer to the various embodiments of the simulation method of the present application, and will not be repeated here.

[0117] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0118] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0119] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0120] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0121] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0122] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0123] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A simulation method, characterized in that: The simulation method comprises: According to the stress-strain curve of the door guard panel upper cover material at a preset temperature and the stress-strain curve of other parts materials at room temperature, a finite element assembly model of the door sheet metal assembly and the door guard panel assembly is established; Apply a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement amount is set according to the maximum deformation amount of the upper cover of the door guard plate; If the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement, it is determined that the door guard panel upper cover meets the design requirements.

2. The simulation method according to claim 1, characterized in that: Before establishing the finite element assembly model of the door sheet metal assembly and the door guard assembly, it also includes: A tensile test of the door guard plate upper cover material is performed at the preset temperature to obtain a stress-strain curve of the door guard plate upper cover material at the preset temperature.

3. The simulation method according to claim 1, characterized in that: Applying a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate specifically includes: A rigid unit is established at all nodes on the most protruding surface of the rear end of the upper cover of the door guard plate, and the main node of the rigid unit is used as a loading point to apply a preset displacement along the negative X direction of the vehicle; or, A rigid unit is established at all nodes on the most protruding surface of the front end of the upper cover of the door guard plate, and the main node of the rigid unit is used as a loading point to apply a preset displacement along the positive X direction of the whole vehicle.

4. The simulation method according to claim 1, characterized in that: Before applying the preset displacement, it also includes: Obtain the changes in the X direction of the door guard covers of multiple similar models under high temperature test of components; An average value of the multiple changes is taken as the maximum deformation of the upper cover of the door guard plate.

5. The simulation method according to claim 4, characterized in that: The preset displacement is the maximum deformation of the upper cover of the door guard plate.

6. The simulation method according to claim 4, characterized in that: The temperature of the high temperature test is the same as the preset temperature.

7. The simulation method according to claim 1, characterized in that: After submitting the ABAQUS simulation solution, it also includes: If the vehicle X-direction deformation of the door panel upper cover is greater than or equal to the preset displacement, the door panel upper cover is structurally optimized and the finite element assembly model is re-established until the vehicle X-direction deformation of the door panel upper cover is less than the preset displacement.

8. A simulation device, characterized in that: The simulation device comprises: A finite element assembly model module, which is used to establish a finite element assembly model of a door sheet metal assembly and a door guard assembly according to a stress-strain curve of a door guard upper cover material at a preset temperature and a stress-strain curve of other materials at room temperature; A solution module, which is used to apply a preset displacement amount directed to the other end to the most protruding surface of the front / rear end of the upper cover of the door guard plate, and submit it to ABAQUS simulation solution; the preset displacement amount is set according to the maximum deformation amount of the upper cover of the door guard plate; The judgment module determines that the door guard panel upper cover meets the design requirements if the vehicle X-axis deformation of the door guard panel upper cover is less than the preset displacement.

9. A simulation device, characterized in that: The simulation device comprises a processor, a memory, and a simulation program stored in the memory and executable by the processor, wherein when the simulation program is executed by the processor, the steps of the simulation method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a simulation program, wherein when the simulation program is executed by a processor, the steps of the simulation method according to any one of claims 1 to 7 are implemented.

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