Front wall wiper system rigidity simulation method, device and equipment and readable storage medium

Abstract

According to the front wall windscreen wiper system rigidity simulation method, device and equipment and the readable storage medium, corresponding temporary coordinate systems are established for connecting mechanism parts on the windscreen wiper motor side and connecting mechanism parts on the non-motor side respectively, and torque is applied to the connecting mechanism parts on the windscreen wiper motor side and the non-motor side in a differential loading mode based on the temporary coordinate systems; according to the scheme, the angular displacement of connecting mechanism parts on the motor side and the non-motor side of the windscreen wiper at the loading position is obtained, the angular displacement is compared with a preset target value, and a judgment result about whether the rigidity of the mounting portion of the front wall windscreen wiper system reaches the standard or not is output. The rigidity of the installation part of the front wall windscreen wiper system is strictly and comprehensively examined, the overall rigidity of the front wall windscreen wiper system and the connected front wall area is effectively determined in the initial stage of vehicle research and development, the reliable performance of related structures is guaranteed, and support is provided for vehicle light weight and structure optimization.

Description

Technical Field

[0001] This application relates to the field of vehicle front wiper systems, specifically to a method, apparatus, equipment, and readable storage medium for simulating the stiffness of a front wiper system. Background Technology

[0002] Currently, in the field of vehicle R&D, the stiffness of the front windshield wiper system mounting area is directly related to the operational stability of the wiper system and the structural reliability of the front area. Accurately obtaining stiffness data of this area in the early stages of R&D is a core requirement to ensure the overall performance of the vehicle, and related simulation technologies have become an important support for the direction of automotive lightweighting and structural optimization.

[0003] In related technologies, there are already methods for calculating the stiffness of wiper system brackets. By importing CATIA data to establish a finite element model, creating specific stiffness conditions and performing calculations and analyses, the bracket stiffness results are finally obtained.

[0004] However, limiting the stiffness calculation to only the tailgate wiper motor bracket cannot be adapted to the structural characteristics of the front wiper system. This results in a lack of rigor and comprehensiveness in assessing the stiffness of the front wiper system mounting area, making it difficult to effectively determine the overall stiffness of the front wiper system and the connected front area in the early stages of research and development, and failing to fully guarantee the reliability of the relevant structures. Summary of the Invention

[0005] This application provides a method, apparatus, device, and readable storage medium for simulating the stiffness of a front wiper system, which can solve the technical problem in related technologies that are limited to stiffness calculations of the tailgate wiper motor bracket and cannot be adapted to the structural characteristics of the front wiper system.

[0006] In a first aspect, embodiments of this application provide a method for simulating the stiffness of the mounting portion of a front windshield wiper system, the method comprising: A finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system installation area is constructed. When simplifying the modeling of the wiper system, the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side are retained. After constraining all degrees of freedom of the local body-in-white section, corresponding temporary coordinate systems are established for the connecting mechanism parts on the wiper motor side and the non-motor side, and different loading methods are adopted based on different temporary coordinate systems. The angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side is obtained respectively. The angular displacement is compared with the preset target value, and the result of the judgment on whether the rigidity of the front wiper system mounting part meets the standard is output.

[0007] In conjunction with the first aspect, in one implementation, the step of establishing corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and adopting different loading methods based on different temporary coordinate systems, includes: A first temporary coordinate system is established on the mounting bracket plane corresponding to the connecting mechanism parts on the wiper motor side. The Y direction of the first temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal direction of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. Based on the first temporary coordinate system, a preset torque is applied to the loading position of the wiper motor side connecting mechanism parts along its Y and Z directions.

[0008] In conjunction with the first aspect, in one implementation, the step of establishing corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and adopting different loading methods based on different temporary coordinate systems, includes: A second temporary coordinate system is established on the mounting bracket plane corresponding to the connecting mechanism parts on the non-wiper motor side. The Y direction of the second temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal direction of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. Based on the second temporary coordinate system, a preset torque is applied to the loading position of the non-wiper motor side connecting mechanism parts along its preset X, Y and XY axis angle directions.

[0009] In conjunction with the first aspect, in one implementation, the construction of a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system mounting area includes: The cut-off position of the partial body-in-white corresponding to the front wiper system installation area is determined according to the actual structure of the body-in-white to adapt to the structural differences of the front area of ​​different models; The area of ​​the front wiper system installation zone corresponds to a portion of the body-in-white, including the front part of the B-pillar of the body-in-white.

[0010] In conjunction with the first aspect, in one implementation, the construction of a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system mounting area includes: In the finite element model, the weld points and welds between the local body-in-white and the wiper system are constructed according to the actual connection relationship.

[0011] In conjunction with the first aspect, in one embodiment, the simplified modeling of the wiper system retains the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side, including: When simplifying the modeling of the wiper system, in addition to retaining the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side, the wiper system motor, motor pin, and the pin mechanism on the non-motor side mounted on the wiper system mounting bracket are also simplified using rigid units.

[0012] In conjunction with the first aspect, in one implementation, the constraint of all degrees of freedom of the local body-in-white section includes: Six degrees of freedom of a local body-in-white section are constrained, namely three translational degrees of freedom and three rotational degrees of freedom, to simulate the fixed constraint effect of the body-in-white under actual assembly conditions.

[0013] Secondly, embodiments of this application provide a front windshield wiper system mounting stiffness simulation device, the front windshield wiper system mounting stiffness simulation device comprising: The model building module is used to construct a finite element model of the partial body-in-white and the wiper system, including the front wiper system installation area. When simplifying the modeling of the wiper system, the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side are retained. The constraint loading module is used to constrain all degrees of freedom of the local body-in-white section, and then establish corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and adopt different loading methods based on different temporary coordinate systems. The result determination module obtains the angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side, compares the angular displacement with the preset target value, and outputs the determination result of whether the rigidity of the front wiper system mounting part meets the standard.

[0014] Thirdly, embodiments of this application provide a front wiper system stiffness simulation device, which includes a processor, a memory, and a front wiper system stiffness simulation program stored in the memory and executable by the processor. When the front wiper system stiffness simulation program is executed by the processor, it implements the steps of the front wiper system mounting part stiffness simulation method as described in some of the above embodiments.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium storing a front wiper system stiffness simulation program, wherein when the front wiper system stiffness simulation program is executed by a processor, it implements the steps of the front wiper system mounting part stiffness simulation method as described in some of the above embodiments.

[0016] The beneficial effects of the technical solutions provided in this application include: For the connecting mechanism parts on the wiper motor side and the non-motor side, corresponding temporary coordinate systems are established. Based on each temporary coordinate system, torque is applied to the connecting mechanism parts on the wiper motor side and the non-motor side using differentiated loading methods. The angular displacement of the connecting mechanism parts on the wiper motor side and the non-motor side at the loading position is obtained respectively. The angular displacement is compared with the preset target value, and the result of the judgment on whether the stiffness of the front wiper system mounting part meets the standard is output. This scheme can be adapted to the structural characteristics of the front wiper system, realize a rigorous and comprehensive assessment of the stiffness of the front wiper system mounting part, effectively determine the overall stiffness of the front wiper system and the connected front area in the early stage of vehicle development, ensure the reliability performance of related structures, and provide support for vehicle lightweighting and structural optimization. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating an embodiment of the front wiper system stiffness simulation method of this application. Figure 2 This is a schematic diagram of the front part of the B-pillar of the body-in-white in an embodiment of this application; Figure 3 This is a schematic diagram of the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and non-motor side in the embodiments of this application; Figure 4 This is a schematic diagram of a connecting mechanism component 1 on the wiper motor side in an embodiment of this application; Figure 5 This is a schematic diagram of the connecting mechanism component two on the non-motor side in an embodiment of this application; Figure 6 This is a schematic diagram of the hardware structure of the front wiper system stiffness simulation device involved in the embodiments of this application.

[0018] In the diagram: 1. Front side of the B-pillar of the white body; 2. Wiper motor side; 3. Non-motor side 1; 4. Non-motor side 2; 5. Connecting mechanism part 1; 6. Connecting mechanism part 2; 7. Connecting mechanism part 3; 8. Mounting bracket. Detailed Implementation

[0019] To enable those skilled in the art to better understand 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. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0021] Currently, in the field of vehicle R&D, the stiffness of the front windshield wiper system mounting area is directly related to the operational stability of the wiper system and the structural reliability of the front area. Accurately obtaining stiffness data of this area in the early stages of R&D is a core requirement to ensure the overall performance of the vehicle, and related simulation technologies have become an important support for the direction of automotive lightweighting and structural optimization.

[0022] Among them, there are already methods for calculating the stiffness of wiper system brackets. By importing CATIA data to establish a finite element model, creating specific stiffness conditions and performing calculations and analyses, the bracket stiffness results are finally obtained.

[0023] However, limiting the stiffness calculation to only the tailgate wiper motor bracket cannot be adapted to the structural characteristics of the front wiper system. This results in a lack of rigor and comprehensiveness in assessing the stiffness of the front wiper system mounting area, making it difficult to effectively determine the overall stiffness of the front wiper system and the connected front area in the early stages of research and development, and failing to fully guarantee the reliability of the relevant structures.

[0024] In a first aspect, embodiments of this application provide a method for simulating the stiffness of a front windshield wiper system.

[0025] In one embodiment, reference is made to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the front wiper system stiffness simulation method of this application. Figure 1 As shown, the simulation method for the stiffness of the front wiper system includes: S100: Construct a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system installation area. When simplifying the modeling of the wiper system, retain the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side. S200: After constraining all degrees of freedom of the local body-in-white section, establish corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and adopt different loading methods based on different temporary coordinate systems; S300: Obtain the angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side respectively, compare the angular displacement with the preset target value, and output the judgment result of whether the rigidity of the front wiper system mounting part meets the standard.

[0026] In this embodiment, a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system mounting area is constructed. When simplifying the modeling of the wiper system, the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side are retained. After constraining all degrees of freedom of the partial body-in-white section, corresponding temporary coordinate systems are established for the connecting mechanism parts on the wiper motor side and the non-motor side respectively. Based on each temporary coordinate system, torque is applied to the connecting mechanism parts on the wiper motor side and the non-motor side using differentiated loading methods. The angular displacement of the connecting mechanism parts on the wiper motor side and the non-motor side at the loading position is obtained respectively. The angular displacement is compared with the preset target value, and the judgment result of whether the stiffness of the front wiper system mounting part meets the standard is output. This scheme can be adapted to the structural characteristics of the front wiper system, realize a rigorous and comprehensive assessment of the stiffness of the front wiper system mounting part, effectively determine the overall stiffness of the front wiper system and the connected front area in the early stage of vehicle development, ensure the reliability performance of related structures, and provide support for vehicle lightweighting and structural optimization.

[0027] Furthermore, in one embodiment, S200 includes S201, which includes the following steps: S201-1: Establish a first temporary coordinate system on the mounting bracket plane corresponding to the connecting mechanism parts on the wiper motor side. The Y direction of the first temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal direction of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. S201-2: Based on the first temporary coordinate system, apply a preset torque to the loading position of the wiper motor side connecting mechanism parts along its Y and Z directions.

[0028] In this embodiment, a first temporary coordinate system is established on the mounting bracket plane corresponding to the wiper motor side connecting mechanism component. The Y-direction of the first temporary coordinate system is consistent with the Y-direction or -Y-direction of the vehicle coordinate system, the Z-direction of the first temporary coordinate system is the normal to the mounting bracket plane, and the X-direction of the first temporary coordinate system is perpendicular to the YZ plane and is automatically generated. Based on the first temporary coordinate system, a preset torque is applied to the loading position of the wiper motor side connecting mechanism component along its Y and Z directions. This setting can adapt to the structural characteristics of the front wiper motor side connecting mechanism, ensuring the accuracy of loading the wiper motor side connecting mechanism component, providing a precise loading basis for assessing the stiffness of the front wiper motor side mounting part, helping to effectively determine the stiffness of the front wiper motor side mounting part in the early stage of vehicle development, ensuring the reliability of the front wiper system and the connected front area structure, and providing support for vehicle lightweighting and structural optimization.

[0029] Furthermore, in one embodiment, S200 includes S202, which includes the following steps: S202-1: Establish a second temporary coordinate system on the mounting bracket plane corresponding to the connecting mechanism parts on the non-wiper motor side. The Y direction of the second temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal direction of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. S202-2: Based on the second temporary coordinate system, apply a preset torque to the loading position of the non-wiper motor side connecting mechanism parts along its preset angle directions in the X, Y and XY axes.

[0030] In this embodiment, a second temporary coordinate system is established on the mounting bracket plane corresponding to the non-wiper motor side connecting mechanism component. The Y-direction of the second temporary coordinate system is consistent with the Y-direction or -Y-direction of the vehicle coordinate system, the Z-direction of the second temporary coordinate system is the normal to the mounting bracket plane, and the X-direction of the second temporary coordinate system is perpendicular to the YZ plane and is automatically generated. Based on the second temporary coordinate system, a preset torque is applied to the loading position of the non-wiper motor side connecting mechanism component along its preset angle directions in the X-direction, Y-direction, and XY axis. This setting can adapt to the structural characteristics of the front bulkhead non-wiper motor side connecting mechanism, ensuring the comprehensiveness and accuracy of the loading on the non-wiper motor side connecting mechanism component, providing an adaptive loading basis for assessing the stiffness of the front bulkhead non-wiper motor side mounting part, helping to effectively determine the stiffness of the front bulkhead non-wiper motor side mounting part in the early stages of vehicle development, further ensuring the reliability performance of the front bulkhead wiper system and the connected front bulkhead area structure, and providing support for vehicle lightweighting and structural optimization.

[0031] Furthermore, in one embodiment, in S100, the cut-off position of the partial body-in-white corresponding to the front wiper system installation area is determined according to the actual structure of the body-in-white to adapt to the structural differences of the front area of ​​different models; the partial body-in-white corresponding to the front wiper system installation area includes the front part of the B-pillar of the body-in-white.

[0032] In this embodiment, the partial body-in-white corresponding to the front wiper system installation area includes the front part of the B-pillar of the body-in-white, and the cut-off position of this partial body-in-white is determined according to the actual structure of the body-in-white to adapt to the structural differences of the front area of ​​different models. This setting provides an adaptability basis for the construction of the finite element model corresponding to the front wiper system installation area, ensuring that the finite element model constructed for different models can accurately reflect the structural characteristics of the front wiper system installation area. This helps to accurately carry out stiffness simulation of the front wiper system installation part in the early stage of vehicle development, ensuring the reliability of the front wiper system and the connected front area structure, and providing support for vehicle lightweighting and structural optimization.

[0033] Furthermore, in one embodiment, in S100, in the finite element model, the weld points and welds between the local body-in-white and the wiper system are constructed according to the actual connection relationship.

[0034] In this embodiment, in the constructed finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system installation area, the weld points and welds between the partial body-in-white and the wiper system are constructed according to the actual connection relationship. This setting can ensure the authenticity of the connection structure between the partial body-in-white and the wiper system in the finite element model, provide a model basis that fits the actual working conditions for the stiffness simulation of the front wiper system installation part, help to accurately obtain the stiffness data of the front wiper system installation part in the early stage of vehicle development, ensure the reliability performance of the front wiper system and the connected front area structure, and provide support for vehicle lightweighting and structural optimization.

[0035] Furthermore, in one embodiment, in S100, when simplifying the modeling of the wiper system, in addition to retaining the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side, the wiper system motor, motor pin, and the pin mechanism on the non-motor side mounted on the wiper system mounting bracket are simplified using rigid units.

[0036] In this embodiment, when simplifying the modeling of the wiper system, in addition to retaining the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side, the wiper system motor, motor pin shaft, and the pin shaft mechanism on the non-motor side mounted on the wiper system mounting bracket are simplified using rigid elements. This setting can optimize the calculation efficiency of the finite element model while ensuring the authenticity of the core structural features of the wiper system, providing accurate model support for the stiffness simulation of the front wiper system mounting part, helping to accurately obtain the stiffness data of the front wiper system mounting part in the early stage of vehicle development, ensuring the reliability performance of the front wiper system and the connected front area structure, and providing support for vehicle lightweighting and structural optimization.

[0037] Furthermore, in one embodiment, in S200, six degrees of freedom of the partial body-in-white cross-section are constrained, namely three translational degrees of freedom and three rotational degrees of freedom, to simulate the fixed constraint effect of the body-in-white in its actual assembly state.

[0038] In this embodiment, when constraining the working condition boundary of the partial body-in-white corresponding to the front wiper system installation area, six degrees of freedom of the partial body-in-white section are constrained, namely three translational degrees of freedom and three rotational degrees of freedom, to simulate the fixed constraint effect of the body-in-white under actual assembly conditions. This setting can ensure that the constraint state of the partial body-in-white in the finite element model fits the actual assembly conditions, providing real boundary condition support for the stiffness simulation of the front wiper system installation part, helping to accurately obtain the stiffness data of the front wiper system installation part in the early stage of vehicle development, ensuring the reliability performance of the front wiper system and the connected front area structure, and providing support for vehicle lightweighting and structural optimization.

[0039] On the other hand, combining Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in the embodiments of this application, the complete technical solution for front wiper system stiffness simulation is as follows: I. Finite Element Model Construction Construct a finite element model of a portion of the body-in-white (approximately 200-300mm in front of the B-pillar of the body-in-white) corresponding to the front wiper system installation area, along with the wiper system. Specific requirements are as follows: Wiper system components are retained and simplified: the wiper system mounting bracket 8, as well as the connecting mechanism part 1 5 on the wiper motor side 2, the connecting mechanism part 2 6 on the non-motor side 1 3, and the connecting mechanism part 3 7 on the non-motor side 2 4 are retained; at the same time, the wiper system motor, motor pin (motor pin reb2 end point), and the pin mechanism on the non-motor side mounted on the wiper system mounting bracket are simplified using rigid units.

[0040] Partial body-in-white adaptability: The cut-off position of the partial body-in-white is determined according to the actual structure of the body-in-white (about 200-300mm in front of the B-pillar) to adapt to the structural differences in the front area of ​​different models.

[0041] Authenticity of connection relationships: The weld points and welds between the partial body-in-white and the wiper system are constructed according to the actual connection relationships.

[0042] II. Boundary Constraints and Loading Settings Local body-in-white constraint: Constraining 6 degrees of freedom (3 translational degrees of freedom + 3 rotational degrees of freedom) of a local body-in-white section to simulate the fixed constraint effect of the body-in-white under actual assembly conditions.

[0043] Loading on the wiper motor side (connecting mechanism part 5): Establish a first temporary coordinate system: Establish a first temporary coordinate system on the mounting bracket plane corresponding to the connecting mechanism part 5. Its Y-axis is consistent with the Y-axis or -Y-axis of the whole vehicle coordinate system, the Z-axis is the normal of the mounting bracket plane, and the X-axis is perpendicular to the YZ plane and is automatically generated.

[0044] Loading method: Based on the first temporary coordinate system, a torque of 4.9 Nm is applied to the loading position of the connecting mechanism part 5 along its Y and Z directions.

[0045] Loading on the non-motor side (taking connecting mechanism part 2.6 as an example): Establish a second temporary coordinate system: Establish a second temporary coordinate system on the mounting bracket plane corresponding to the connecting mechanism part 26. Its Y-axis is consistent with the Y-axis or -Y-axis of the whole vehicle coordinate system, the Z-axis is the normal of the mounting bracket plane, and the X-axis is perpendicular to the YZ plane and is automatically generated.

[0046] Loading method: Based on the second temporary coordinate system, a torque of 4.9 Nm is applied to the loading position of the second connecting mechanism part 6 along its X, Y and XY axis 45° directions; similarly, the third connecting mechanism part 7 on the non-motor side 24 is loaded with a torque of 4.9 Nm according to its structural characteristics.

[0047] III. Stiffness Determination The angular displacement of the loading position of the connecting mechanism parts on the wiper motor side 2 (connecting mechanism part 1 5) and the non-motor side (connecting mechanism part 2 6 and connecting mechanism part 3 7) is obtained respectively. The angular displacement is compared with the preset target value (see Table 1) and the result is output to determine whether the rigidity of the front wiper system mounting part meets the standard.

[0048]

[0049] Table 1 Secondly, this application also provides a front wiper system mounting stiffness simulation device, which includes: a model building module, used to construct a finite element model of a local body-in-white corresponding to the front wiper system mounting area and the wiper system, retaining the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side when simplifying the modeling of the wiper system; a constraint loading module, used to constrain all degrees of freedom of the local body-in-white section, establish corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side respectively, and adopt different loading methods based on different temporary coordinate systems; and a result judgment module, which obtains the angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side respectively, compares the angular displacement with the preset target value, and outputs a judgment result on whether the stiffness of the front wiper system mounting part meets the standard.

[0050] The functions of each module in the aforementioned front wiper system mounting stiffness simulation device correspond to the steps in the aforementioned front wiper system stiffness simulation method embodiment, and their functions and implementation processes will not be described in detail here.

[0051] Thirdly, embodiments of this application provide a front windshield wiper system stiffness simulation device, which can be a personal computer (PC), laptop computer, server, or other device with data processing capabilities.

[0052] Reference Figure 6 , Figure 6 This is a schematic diagram of the hardware structure of the front wiper system stiffness simulation device involved in the embodiments of this application. In this embodiment, the front wiper system stiffness simulation device may include a processor, a memory, a communication interface, and a communication bus.

[0053] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0054] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting components within the front wiper system stiffness simulation equipment, as well as interfaces used for interconnecting the front wiper system stiffness simulation equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.

[0055] 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.

[0056] The processor can be a general-purpose processor, which can call the front wiper system stiffness simulation program stored in the memory and execute the front wiper system stiffness simulation method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the front wiper system stiffness simulation program is called can refer to the various embodiments of the front wiper system stiffness simulation method of this application, and will not be repeated here.

[0057] Those skilled in the art will understand that Figure 6 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0058] Fourthly, embodiments of this application also provide a readable storage medium.

[0059] The present application has a readable storage medium storing a front windshield wiper system stiffness simulation program, wherein when the front windshield wiper system stiffness simulation program is executed by a processor, it implements the steps of the front windshield wiper system stiffness simulation method as described above.

[0060] The method implemented when the front wiper system stiffness simulation program is executed can be referred to in various embodiments of the front wiper system stiffness simulation method of this application, and will not be repeated here.

[0061] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0062] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0063] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.

[0064] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0065] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish 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 sequentially or in parallel, and these operations or steps may be combined.

[0066] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0067] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for simulating the stiffness of the mounting area of ​​a front windshield wiper system, characterized in that, The simulation method for the stiffness of the front wiper system includes: A finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system installation area is constructed. When simplifying the modeling of the wiper system, the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side are retained. After constraining all degrees of freedom of the local body-in-white section, corresponding temporary coordinate systems are established for the connecting mechanism parts on the wiper motor side and the non-motor side, and different loading methods are adopted based on different temporary coordinate systems; The angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side is obtained respectively. The angular displacement is compared with the preset target value, and the result of the judgment on whether the rigidity of the front wiper system mounting part meets the standard is output.

2. The method for simulating the stiffness of the mounting portion of the front wiper system as described in claim 1, characterized in that, The method involves establishing corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and employing different loading methods based on different temporary coordinate systems, including: A first temporary coordinate system is established on the mounting bracket plane corresponding to the connecting mechanism parts on the wiper motor side. The Y direction of the first temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal direction of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. Based on the first temporary coordinate system, a preset torque is applied to the loading position of the wiper motor side connecting mechanism parts along its Y and Z directions.

3. The method for simulating the stiffness of the mounting portion of the front windshield wiper system as described in claim 1, characterized in that, The method involves establishing corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and employing different loading methods based on different temporary coordinate systems, including: A second temporary coordinate system is established on the mounting bracket plane corresponding to the connecting mechanism parts on the non-wiper motor side. The Y direction of the second temporary coordinate system is consistent with the Y direction or -Y direction of the vehicle coordinate system, the Z direction is the normal of the mounting bracket plane, and the X direction is perpendicular to the YZ plane and is automatically generated. Based on the second temporary coordinate system, a preset torque is applied to the loading position of the non-wiper motor side connecting mechanism parts along its preset X, Y and XY axis angle directions.

4. The method for simulating the stiffness of the mounting portion of the front windshield wiper system as described in claim 1, characterized in that, The construction includes a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system mounting area, including: The cut-off position of the partial body-in-white corresponding to the front wiper system installation area is determined according to the actual structure of the body-in-white to adapt to the structural differences of the front area of ​​different models; The area of ​​the front wiper system installation zone corresponds to a portion of the body-in-white, including the front part of the B-pillar of the body-in-white.

5. The method for simulating the stiffness of the mounting portion of the front windshield wiper system as described in claim 1, characterized in that, The construction includes a finite element model of the partial body-in-white and the wiper system corresponding to the front wiper system mounting area, including: In the finite element model, the weld points and welds between the local body-in-white and the wiper system are constructed according to the actual connection relationship.

6. The method for simulating the stiffness of the mounting portion of the front windshield wiper system as described in claim 1, characterized in that, The simplified modeling of the wiper system retains the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and non-motor side, including: When simplifying the modeling of the wiper system, in addition to retaining the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side, the wiper system motor, motor pin, and the pin mechanism on the non-motor side mounted on the wiper system mounting bracket are also simplified using rigid units.

7. The method for simulating the stiffness of the mounting portion of the front windshield wiper system as described in claim 1, characterized in that, The constraints on all degrees of freedom of the local body-in-white section include: Six degrees of freedom of a local body-in-white section are constrained, namely three translational degrees of freedom and three rotational degrees of freedom, to simulate the fixed constraint effect of the body-in-white under actual assembly conditions.

8. A device for simulating the stiffness of the mounting area of ​​a front windshield wiper system, characterized in that, The front wiper system mounting stiffness simulation device includes: The model building module is used to construct a finite element model of the partial body-in-white and the wiper system, including the front wiper system installation area. When simplifying the modeling of the wiper system, the wiper system mounting bracket and the connecting mechanism parts on the wiper motor side and the non-motor side are retained. The constraint loading module is used to constrain all degrees of freedom of the local body-in-white section, and then establish corresponding temporary coordinate systems for the connecting mechanism parts on the wiper motor side and the non-motor side, and adopt different loading methods based on different temporary coordinate systems. The result determination module obtains the angular displacement of the loading position of the connecting mechanism parts on the wiper motor side and the non-motor side, compares the angular displacement with the preset target value, and outputs the determination result of whether the rigidity of the front wiper system mounting part meets the standard.

9. A front windshield wiper system stiffness simulation device, characterized in that, The front wiper system stiffness simulation device includes a processor, a memory, and a front wiper system stiffness simulation program stored in the memory and executable by the processor, wherein when the front wiper system stiffness simulation program is executed by the processor, it implements the steps of the front wiper system mounting part stiffness simulation method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a front wiper system stiffness simulation program, wherein when the front wiper system stiffness simulation program is executed by a processor, it implements the steps of the front wiper system mounting part stiffness simulation method as described in any one of claims 1 to 7.

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