Automobile spoiler assembly performance simulation analysis method and system and storage medium

Abstract

The application discloses a kind of automobile spoiler assembly performance simulation analysis method, system and storage medium, its method includes: importing spoiler assembly structure data in pre-processing software, calling abstract midplane unit to carry out abstract midplane processing to spoiler assembly structure data, obtain spoiler simplified model;In pre-processing software, the parameter counterweight assembly simulation processing of spoiler simplified model is carried out based on finite element grid, and the finite element simulation model of spoiler is obtained;Based on the connection working condition of spoiler finite element simulation model and the load force acting on the spoiler finite element simulation model, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of spoiler assembly are analyzed in pre-processing software and post-processing software.The application replaces test stand test by simulation analysis, verifies automobile spoiler assembly performance, solves the problem that the performance of automobile spoiler assembly is verified by test in existing design stage, and leads to long research and development cycle, high research and development cost.

Description

Technical Field

[0001] This invention relates to the field of automotive performance analysis, specifically to a method, system, and storage medium for performance simulation analysis of automotive spoiler assemblies. Background Technology

[0002] A car spoiler is a component mounted on the tailgate of a car, resembling an inverted aircraft tail fin. On one hand, it adds a dynamic look to the car and enhances its aesthetics; on the other hand, it effectively reduces air resistance at high speeds, saving fuel and improving vehicle stability.

[0003] The main material used in automotive spoiler assemblies is plastic. Key performance indicators for spoilers include modal analysis, stiffness, strength, resistance to abnormal forces, and horn vibration intensity. Currently, their performance is primarily verified through testing. Therefore, verifying the performance of automotive spoiler assemblies often requires designing and manufacturing molds, producing prototypes, and conducting laboratory tests. If the tests fail, the design must be repeatedly modified and tested continuously. The long mold adjustment cycle results in high raw material and time costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the aforementioned background technology and provide a method, system, and storage medium for simulating and analyzing the performance of an automotive spoiler assembly. By replacing bench tests with simulation analysis, the performance of the automotive spoiler assembly is verified, potential design risks are identified, and structural design is optimized. This solves the technical problems of long development cycles and high development costs caused by the current design stage's reliance on experimental verification of the performance of automotive spoiler assemblies.

[0005] Firstly, a method for performance simulation analysis of an automotive spoiler assembly is provided, including the following steps:

[0006] Import the spoiler assembly structure data into the preprocessing software, call the center-surface unit to perform center-surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model.

[0007] In the pre-processing software, the simplified model of the spoiler is simulated by parametric counterweight assembly based on the finite element mesh to obtain the finite element simulation model of the spoiler.

[0008] Based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, the modal performance, stiffness performance, strength performance and resistance to abnormal forces of the spoiler assembly are analyzed in the pre-processing software and post-processing software.

[0009] According to the first aspect, in a first possible implementation of the first aspect, the step of "performing parametric counterweight assembly simulation processing on the simplified spoiler model based on a finite element mesh in preprocessing software to obtain a finite element simulation model of the spoiler" includes the following steps:

[0010] In the pre-processing software, the simplified model of the spoiler assembly is meshed using finite element methods. After assembling and connecting the various accessories of the simplified spoiler model, the counterweights of the various accessories of the simplified spoiler model are simulated and set, and the properties of the simplified spoiler model are set to obtain the finite element simulation model of the spoiler.

[0011] According to the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the step of "analyzing the modal performance of the spoiler assembly in pre-processing software and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps:

[0012] In the pre-processing software, the rbe2 element is called to simulate the connection between the finite element simulation model of the spoiler and the vehicle model. By establishing constraints at the center node of the rbe2 element, and based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model, the simulation solver is called to calculate the modal characteristic results of the spoiler assembly.

[0013] Import the modal characteristic results of the spoiler assembly into the post-processing software to obtain the first-order global modal frequency value of the spoiler assembly;

[0014] When the first-order overall modal frequency value is greater than the preset modal frequency value, the modal performance simulation of the spoiler assembly meets the requirements;

[0015] When the first-order overall modal frequency value is less than the preset modal frequency value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first-order overall modal frequency value is greater than the preset modal frequency value.

[0016] According to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the step of "analyzing the stiffness performance of the spoiler assembly in pre-processing software and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps:

[0017] In the preprocessing software, the rbe2 element is called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the rbe2 element, and applying a first preset load force at the middle part of the spoiler finite element simulation model and the weak bending stiffness position of the spoiler assembly, the simulation solver is called to calculate the stiffness result of the spoiler assembly based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the stress information of the spoiler finite element simulation model.

[0018] Import the stiffness results of the spoiler assembly into the post-processing software to obtain the Z-direction displacement values ​​of the middle part of the spoiler finite element simulation model and the weak points of the bending stiffness of the spoiler assembly.

[0019] When the Z-direction displacement value is less than the preset displacement value, the stiffness performance simulation of the spoiler assembly meets the requirements.

[0020] When the Z-direction displacement value is greater than the preset displacement value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the Z-direction displacement value is less than the preset displacement value.

[0021] According to the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, the step of "analyzing the strength performance of the spoiler assembly in pre-processing software and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps:

[0022] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, the COUP_DIS element is called at at least three maximum span positions of the buckle of the spoiler finite element simulation model to simulate the application of the second preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the strength result of the spoiler assembly.

[0023] Import the spoiler assembly strength results into the post-processing software to obtain the first maximum Mises stress value among at least three clips of the spoiler finite element simulation model;

[0024] When the first maximum Mises stress value is less than the preset material yield strength, the strength performance simulation of the spoiler assembly meets the requirements.

[0025] When the first maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first maximum Mises stress value is less than the preset material yield strength.

[0026] According to the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the step of "analyzing the abnormal force resistance performance of the spoiler assembly in the pre-processing software and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps:

[0027] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, COUP_DIS elements are called at multiple positions on one side of the rear edge of the spoiler finite element simulation model to simulate the application of the third preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the abnormal force resistance strength of the spoiler assembly.

[0028] Import the abnormal force resistance strength results of the spoiler assembly into the post-processing software to obtain the second maximum Mises stress value at multiple locations on one side of the rear edge of the spoiler finite element simulation model.

[0029] When the second maximum Mises stress value is less than the preset material yield strength, the simulation of the abnormal force resistance performance of the spoiler assembly meets the requirements.

[0030] When the second maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the second maximum Mises stress value is less than the preset material yield strength.

[0031] According to the fifth possible implementation of the first aspect, in the sixth possible implementation of the first aspect, after the step of "analyzing the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly in the pre-processing software and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model", the following steps are included:

[0032] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam element, KINCOUP is called to install the horn to multiple horn mounting positions in the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, the simulation solver is called to calculate the horn vibration intensity result of the spoiler assembly based on the displacement information of the connection point of the horn installed on the spoiler finite element simulation model and the Mises stress information of the spoiler finite element simulation model.

[0033] Import the horn vibration intensity results of the spoiler assembly into the post-processing software to obtain the third maximum Mises stress value among multiple horn snap-fit ​​positions;

[0034] When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the horn vibration strength performance of the spoiler assembly meets the requirements.

[0035] When the third maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structural data or the spoiler finite element simulation model is adjusted.

[0036] Secondly, a performance simulation and analysis system for an automotive spoiler assembly is provided, including:

[0037] The spoiler simplified model module is used to import spoiler assembly structure data into the preprocessing software, call the center surface unit to perform center surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model.

[0038] A spoiler finite element simulation model module, communicatively connected to the spoiler simplified model module, is used to perform parametric weight assembly simulation processing on the simplified spoiler model based on a finite element mesh in pre-processing software to obtain a spoiler finite element simulation model; and...

[0039] The basic performance analysis module for the spoiler assembly communicates with the finite element simulation model module of the spoiler. Based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, the module analyzes the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly in the pre-processing software and post-processing software.

[0040] According to the second aspect, in the first possible implementation of the second aspect, a horn vibration strength performance module communicatively connected to the spoiler finite element simulation model module is further included. The horn vibration strength performance module is used in the pre-processing software to call beam units to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam unit, KINCOUP is called to install the horn to multiple horn mounting positions on the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, the load is calculated based on the displacement of the connection point where the horn is mounted on the spoiler finite element simulation model. The Mises stress information of the finite element simulation model of the spoiler is used to calculate the vibration intensity result of the spoiler assembly horn using the simulation solver. The vibration intensity result of the spoiler assembly horn is imported into the post-processing software to obtain the third maximum Mises stress value among multiple horn clamping positions. When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the spoiler assembly horn vibration intensity performance meets the requirements. When the third maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structural data is adjusted until the third maximum Mises stress value is less than the preset material yield strength.

[0041] Thirdly, a storage medium is provided on which a computer program is stored, which, when executed by a processor, implements the above-described method for simulating and analyzing the performance of an automotive spoiler assembly.

[0042] Compared with existing technologies, this invention first imports the spoiler assembly structure data into the pre-processing software, and then uses the extracted surface element to perform extracted surface processing on the spoiler assembly structure data to obtain a simplified spoiler model. Next, the simplified spoiler model is simulated using parametric counterweight assembly based on a finite element mesh in the pre-processing software to obtain a finite element simulation model of the spoiler. Finally, based on the connection conditions of the finite element simulation model of the spoiler and the load forces acting on it, the modal performance, stiffness performance, strength performance, and resistance to abnormal forces of the spoiler assembly are analyzed in both the pre-processing and post-processing software.

[0043] Simulation analysis is used to verify the main basic performance indicators of the spoiler, including spoiler assembly modes, spoiler assembly stiffness, spoiler assembly strength, and important properties of the spoiler's resistance to abnormal forces. Simulation analysis replaces bench testing to verify the performance of the automotive spoiler assembly, identify potential design risks, and optimize the structural design. This solves the technical problems of long development cycles and high development costs caused by the current design stage's reliance on experimental verification of the performance of automotive spoiler assemblies. Attached Figure Description

[0044] Figure 1This is a flowchart illustrating a method for performance simulation analysis of an automotive spoiler assembly according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the degree-of-freedom constraints of the finite element simulation model of the spoiler provided in another embodiment of the present invention;

[0046] Figure 3 This is a simulation diagram of the stiffness performance of the spoiler assembly provided in another embodiment of the present invention;

[0047] Figure 4 This is a simulation diagram of the strength performance of the spoiler assembly provided in another embodiment of the present invention;

[0048] Figure 5 This is a simulation diagram of the abnormal force resistance performance of the spoiler assembly provided in another embodiment of the present invention;

[0049] Figure 6 This is a simulation diagram of the horn vibration intensity performance of the spoiler assembly provided in another embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the structure of a performance simulation analysis system for an automotive spoiler assembly provided in an embodiment of the present invention. Attached image description:

[0052] 100. Automotive spoiler assembly performance simulation analysis system; 110. Spoiler simplified model module; 120. Spoiler finite element simulation model module; 130. Spoiler assembly basic performance analysis module; 140. Horn vibration intensity performance module. Detailed Implementation

[0053] Referring now to specific embodiments of the invention, examples of which are illustrated in the accompanying drawings. Although the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. Rather, it is intended to cover variations, modifications, and equivalents included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein can be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of both.

[0054] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] Note: The examples described below are merely specific examples and are not intended to limit the embodiments of the present invention to the specific steps, values, conditions, data, order, etc. Those skilled in the art can utilize the concept of the present invention to construct more embodiments not mentioned herein by reading this specification.

[0056] See Figure 1 As shown in the figure, this invention provides a method for performance simulation analysis of an automotive spoiler assembly, including the following steps:

[0057] S100, import the spoiler assembly structure data into the preprocessing software, call the centering surface unit to perform centering surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model.

[0058] S200, In the pre-processing software, the simplified model of the spoiler is simulated by parametric counterweight assembly based on the finite element mesh to obtain the finite element simulation model of the spoiler.

[0059] S300, based on the connection conditions of the finite element simulation model of the spoiler and the load forces acting on the finite element simulation model of the spoiler, analyze the modal performance, stiffness performance, strength performance and resistance to abnormal forces of the spoiler assembly in the pre-processing software and post-processing software.

[0060] Specifically, in this embodiment, when testing and verifying the performance of an automotive spoiler assembly, it is often necessary to design and manufacture molds, produce prototypes, and conduct tests in a laboratory. If the tests fail, the design must be repeatedly modified and tests continuously conducted. Because adjusting the molds is a long process, both raw material and time costs are high. Therefore, this invention provides a method for simulating and analyzing the performance of an automotive spoiler assembly, see [link to relevant documentation]. Figure 1 As shown, firstly, the spoiler assembly structure data is imported into the pre-processing software, and the center-surface element is called to perform center-surface processing on the spoiler assembly structure data to obtain a simplified spoiler model; then, the simplified spoiler model is subjected to parametric counterweight assembly simulation processing based on finite element mesh in the pre-processing software to obtain a finite element simulation model of the spoiler; finally, based on the connection conditions of the finite element simulation model of the spoiler and the load forces acting on the finite element simulation model of the spoiler, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly are analyzed in the pre-processing and post-processing software.

[0061] Simulation analysis is used to verify the main basic performance indicators of the spoiler, including spoiler assembly modes, spoiler assembly stiffness, spoiler assembly strength, and important properties of the spoiler's resistance to abnormal forces. Simulation analysis replaces bench testing to verify the performance of the automotive spoiler assembly, identify potential design risks, and optimize the structural design. This solves the technical problems of long development cycles and high development costs caused by the current design stage's reliance on experimental verification of the performance of automotive spoiler assemblies.

[0062] S100: Import the spoiler assembly structure data into the preprocessing software, call the extracted surface element to simplify the spoiler assembly structure data (3D geometric data) into a 2D geometric model, and perform geometric cleanup. At the same time, delete the circular holes with a diameter of less than 4mm and the chamfers with a radius of less than 1mm to obtain the simplified spoiler model.

[0063] Preferably, in another embodiment of this application, the step "S200, performing parametric counterweight assembly simulation processing on the simplified spoiler model based on a finite element mesh in the preprocessing software to obtain a finite element simulation model of the spoiler" includes the following steps:

[0064] In the pre-processing software, the simplified model of the spoiler assembly is meshed using finite element methods. After assembling and connecting the various accessories of the simplified spoiler model, the counterweights of the various accessories of the simplified spoiler model are simulated and set, and the properties of the simplified spoiler model are set to obtain the finite element simulation model of the spoiler.

[0065] Specifically, in this embodiment, mesh generation involves dividing the model into many small elements. As a crucial part of the preprocessing for finite element analysis, the degree of matching between the mesh generation and the computational objective, as well as the quality of the mesh, determines the quality of the subsequent finite element calculations. The finite element mesh generation uses 2D shel elements with an average mesh size of 4 mm.

[0066] The various components of the simplified spoiler model are assembled and connected, specifically by using the RBE2 element to simulate the spoiler's snap-fit ​​connection. The RBE2 element, along with the ACM element and the RBE3 element, are used to simulate the adhesive bonding of some spoiler components. The elastic modulus of the ACM element is 6 MPa.

[0067] The counterweights of each accessory of the simplified spoiler model are simulated and set. Specifically, CONM2 mass point elements are established at the center of mass of each accessory of the simplified spoiler model, and mass data of each accessory is assigned. The mass is distributed to the assembly position of each accessory by calling the rbe3 element.

[0068] The simplified spoiler model is configured with the following properties: 1. Material properties: The outer skin of the spoiler is made of ABS plastic with an elastic modulus of 2130 MPa; the internal reinforcement and structural material is made of ASA plastic with an elastic modulus of 2150 MPa. 2. Thickness properties: The specific thickness value of the spoiler is set by calling the shell unit based on the thickness data of the spoiler assembly structure data (3D geometric data).

[0069] Through the above processing, the finite element simulation model of the spoiler is built, and thus the finite element simulation model of the spoiler is obtained.

[0070] Preferably, in another embodiment of this application, see Figure 2 As shown, step S300, "Based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, analyze the modal performance of the spoiler assembly in the pre-processing software and post-processing software," includes the following steps:

[0071] In the pre-processing software, the rbe2 element is called to simulate the connection between the finite element simulation model of the spoiler and the vehicle model. By establishing constraints at the center node of the rbe2 element, and based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model, the simulation solver is called to calculate the modal characteristic results of the spoiler assembly.

[0072] Import the modal characteristic results of the spoiler assembly into the post-processing software to obtain the first-order global modal frequency value of the spoiler assembly;

[0073] When the first-order overall modal frequency value is greater than the preset modal frequency value, the modal performance simulation of the spoiler assembly meets the requirements;

[0074] When the first-order overall modal frequency value is less than the preset modal frequency value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first-order overall modal frequency value is greater than the preset modal frequency value.

[0075] Specifically, in this embodiment, the rbe2 element is used to simulate and connect the spoiler finite element simulation model with the vehicle model. Constraints are established at the central node of the rbe2 element, constraining the translational degrees of freedom in the X, Y, and Z directions and the rotational degrees of freedom in the three directions, that is, constraining the 123456 degrees of freedom - dof1, dof2, dof3, dof4, dof5, and dof6, which respectively represent the six degrees of freedom of an object in three-dimensional space. When the values ​​of dof1 to dof6 are all set to 0, the object is fixed in position in three-dimensional space and cannot move.

[0076] Then, based on the displacement information of the connection points of the spoiler finite element simulation model installed on the vehicle model, the simulation solver is called to calculate the modal characteristic results of the spoiler assembly. Specifically, an "EIGRL" load card is created to analyze the modal characteristics of the spoiler assembly in the range of 0-60Hz. The Nastran analysis software SOL103 simulation solver is used, the output of the spoiler assembly displacement information is set, and the simulation solver is submitted for calculation. The modal characteristic results of the spoiler assembly are imported into the post-processing software to obtain the first-order global modal frequency value of the spoiler assembly. When the first-order global modal frequency value is greater than the preset modal frequency value (30Hz), the modal performance simulation of the spoiler assembly meets the requirements. When the first-order global modal frequency value is less than the preset modal frequency value (30Hz), the spoiler assembly structural data or the spoiler finite element simulation model is adjusted until the first-order global modal frequency value is greater than the preset modal frequency value.

[0077] Preferably, in another embodiment of this application, see Figure 3 As shown, step "S300, based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, analyze the stiffness performance of the spoiler assembly in the pre-processing software and post-processing software" includes the following steps:

[0078] In the preprocessing software, the rbe2 element is called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the rbe2 element, and applying a first preset load force at the middle part of the spoiler finite element simulation model and the weak point of the bending stiffness of the spoiler assembly, the simulation solver is called to calculate the stiffness result of the spoiler assembly based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the stress information of the spoiler finite element simulation model.

[0079] Import the stiffness results of the spoiler assembly into the post-processing software to obtain the Z-direction displacement values ​​of the middle part of the spoiler finite element simulation model and the weak points of the bending stiffness of the spoiler assembly.

[0080] When the Z-direction displacement value is less than the preset displacement value, the stiffness performance simulation of the spoiler assembly meets the requirements.

[0081] When the Z-direction displacement value is greater than the preset displacement value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the Z-direction displacement value is less than the preset displacement value.

[0082] Specifically, in this embodiment, similarly, the rbe2 element is invoked to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the rbe2 element, constraining the translational degrees of freedom in the X, Y, and Z directions and the rotational degrees of freedom in the three directions. The rbe3 element is invoked to simulate the middle of the spoiler finite element simulation model and the weak point of the spoiler assembly's bending stiffness, respectively, selecting a force-bearing area of ​​150*60mm. Then, a first preset load force of 200N is applied to the middle of the spoiler finite element simulation model and the weak point of the spoiler assembly's bending stiffness (the midpoint of the rbe3 element). See... Figure 3 Two loadstep analysis steps, p1 and p2, are established. The Nastran SOL101 static solver is used to calculate the spoiler assembly stiffness based on the displacement information of the connection points between the spoiler finite element simulation model and the vehicle model, as well as the stress information of the spoiler finite element simulation model. The spoiler assembly stiffness results are then imported into the post-processing software to obtain the Z-direction displacement values ​​at the center of the spoiler finite element simulation model and at the weakest points in the bending stiffness of the spoiler assembly. When the Z-direction displacement value is less than a preset displacement value (5mm), the spoiler assembly stiffness performance simulation meets the requirements. When the Z-direction displacement value is greater than the preset displacement value (5mm), the spoiler assembly structural data or the spoiler finite element simulation model is adjusted until the Z-direction displacement value is less than the preset displacement value.

[0083] Preferably, in another embodiment of this application, see Figure 4 As shown, step S300, "Based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, analyze the strength performance of the spoiler assembly in the pre-processing software and post-processing software," includes the following steps:

[0084] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, the COUP_DIS element is called at at least three maximum span positions of the buckle of the spoiler finite element simulation model to simulate the application of the second preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the strength result of the spoiler assembly.

[0085] Import the spoiler assembly strength results into the post-processing software to obtain the first maximum Mises stress value among at least three clips of the spoiler finite element simulation model;

[0086] When the first maximum Mises stress value is less than the preset material yield strength, the strength performance simulation of the spoiler assembly meets the requirements.

[0087] When the first maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first maximum Mises stress value is less than the preset material yield strength.

[0088] Specifically, in this embodiment, a beam element is used to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element, constraining the translational degrees of freedom in the X, Y, and Z directions and the rotational degrees of freedom in the three directions. At least three maximum span positions of the latches in the spoiler finite element simulation model are selected. The COUP_DIS element is used to capture a node with a width of approximately 10mm between two latches on the upper surface of the spoiler assembly. A positive Z-direction force of 1500N is applied at the center node of the COUP_DIS element (at least three maximum span positions of the latches in the spoiler finite element simulation model). See [link to documentation]. Figure 4 The following steps are performed: P3, P4, and P5 are referenced. The Abaqus simulation solver is invoked, with the load step increment set to 0.1. The large geometric deformation option NLGEOM=YES is enabled. Based on the displacement information of the connection points between the spoiler finite element simulation model and the vehicle model, and the Mises stress information of the spoiler finite element simulation model, the strength result of the spoiler assembly is calculated. This strength result is then imported into the post-processing software to obtain the first maximum Mises stress value among at least three clips in the spoiler finite element simulation model. The stress is smoothed using the simple type. If the first maximum Mises stress value is less than the preset material yield strength (45MPa), the spoiler assembly strength performance simulation meets the requirements. If the first maximum Mises stress value is greater than the preset material yield strength (45MPa), the spoiler assembly structural data or the spoiler finite element simulation model is adjusted until the first maximum Mises stress value is less than the preset material yield strength.

[0089] Preferably, in another embodiment of this application, see Figure 5 As shown, step "S300, based on the connection conditions of the spoiler finite element simulation model and the load forces acting on the spoiler finite element simulation model, analyze the abnormal force resistance performance of the spoiler assembly in the pre-processing software and post-processing software" includes the following steps:

[0090] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, COUP_DIS elements are called at multiple positions on one side of the rear edge of the spoiler finite element simulation model to simulate the application of the third preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the abnormal force resistance strength of the spoiler assembly.

[0091] Import the abnormal force resistance strength results of the spoiler assembly into the post-processing software to obtain the second maximum Mises stress value at multiple locations on one side of the rear edge of the spoiler finite element simulation model.

[0092] When the second maximum Mises stress value is less than the preset material yield strength, the simulation of the abnormal force resistance performance of the spoiler assembly meets the requirements.

[0093] When the second maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the second maximum Mises stress value is less than the preset material yield strength.

[0094] Specifically, in this embodiment, the beam element is used in the pre-processing software to simulate and connect the finite element simulation model of the spoiler with the vehicle model. Constraints are established at the center nodes of the beam elements, constraining the translational degrees of freedom in the X, Y, and Z directions and the rotational degrees of freedom in the three directions. A grippable area is selected near the rear edge of the spoiler, as shown in the figure. Three COUP_DIS elements are established on the upper surface and side of the spoiler, respectively. The COUP_DIS elements grip nodes within a force range of 100*25mm. A Z-direction force of 500N is applied at the center node of the upper surface element, and an X-direction force of 500N is applied at the center node of the side element. The loads are as follows: Figure 5The following steps are performed: First, based on the displacement information of the connection points of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the abnormal force resistance strength of the spoiler assembly. The load step increment is set to 0.1, and the large geometric deformation option NLGEOM=YES is enabled. The abnormal force resistance strength results of the spoiler assembly are imported into the post-processing software to obtain the second maximum Mises stress value at multiple locations on one side of the rear edge of the spoiler finite element simulation model, and a simple smoothing process is used. When the second maximum Mises stress value is less than the preset material yield strength (45MPa), the abnormal force resistance performance simulation of the spoiler assembly meets the requirements. When the second maximum Mises stress value is greater than the preset material yield strength (45MPa), the spoiler assembly structural data or the spoiler finite element simulation model is adjusted until the second maximum Mises stress value is less than the preset material yield strength.

[0095] Preferably, in another embodiment of this application, see Figure 6 As shown, after step "S300, based on the connection conditions of the spoiler finite element simulation model and the load forces acting on the spoiler finite element simulation model, analyze the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly in the pre-processing software and post-processing software", the following steps are included:

[0096] S400 analyzes the horn vibration intensity performance of the spoiler assembly in both pre-processing and post-processing software. Specifically,

[0097] In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam element, KINCOUP is called to install the horn to multiple horn mounting positions in the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, the simulation solver is called to calculate the horn vibration intensity result of the spoiler assembly based on the displacement information of the connection point of the horn installed on the spoiler finite element simulation model and the Mises stress information of the spoiler finite element simulation model.

[0098] Import the horn vibration intensity results of the spoiler assembly into the post-processing software to obtain the third maximum Mises stress value among multiple horn snap-fit ​​positions;

[0099] When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the horn vibration strength performance of the spoiler assembly meets the requirements.

[0100] When the third maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structural data or the spoiler finite element simulation model is adjusted.

[0101] Specifically, in this embodiment, the horn vibration strength performance is not a necessary item; the abnormal force resistance analysis is a nonlinear analysis, and the spoiler component material should be given a nonlinear stress-strain curve; in the pre-processing software, beam elements are used to simulate and connect the finite element simulation model of the spoiler with the vehicle model, and constraints are established at the central nodes of the beam elements to constrain the translational degrees of freedom in the X, Y, and Z directions and the rotational degrees of freedom in the three directions.

[0102] Mass elements are used to assign mass to each horn, and Kincoup is used to install the horns at multiple horn mounting points on the spoiler finite element simulation model. A forced displacement load P12 of 0.04 mm along the normal direction of the mounting surface is then applied at the horn mass element mounting points to simulate the vibration intensity of the externally emitted horns. Based on the displacement information of the connection points of the horns mounted on the spoiler finite element simulation model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is used to calculate the horn vibration intensity of the spoiler assembly. The load step increment is set to 0.1, and geometry is enabled. Set the large deformation option NLGEOM=YES; import the horn vibration intensity results of the spoiler assembly into the post-processing software, obtain the third maximum Mises stress value among multiple horn latching positions, and smooth it using the simple type; when the third maximum Mises stress value is less than the preset material yield strength (45MPa), the horn vibration intensity performance simulation of the spoiler assembly meets the requirements; when the third maximum Mises stress value is greater than the preset material yield strength (45MPa), adjust the spoiler assembly structural data or adjust the spoiler finite element simulation model.

[0103] Through simulation analysis of the entire spoiler assembly, its modal performance, stiffness, strength, resistance to abnormal forces, and horn vibration strength are evaluated. Only when all performance indicators are met can the spoiler assembly be evaluated as meeting the performance requirements.

[0104] See Figure 7 As shown, the present invention also provides a performance simulation analysis system 100 for an automotive spoiler assembly, including a spoiler simplified model module 110, a spoiler finite element simulation model module 120, a spoiler assembly basic performance analysis module 130, and a horn vibration intensity performance module 140.

[0105] The spoiler simplified model module 110 is used to import spoiler assembly structure data into the preprocessing software, call the center surface unit to perform center surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model.

[0106] The spoiler finite element simulation model module 120 is communicatively connected to the spoiler simplified model module 110, and is used to perform parametric counterweight assembly simulation processing on the spoiler simplified model based on finite element mesh in the preprocessing software to obtain the spoiler finite element simulation model.

[0107] The spoiler assembly basic performance analysis module 130 is communicatively connected to the spoiler finite element simulation model module 120. Based on the connection conditions and load forces acting on the spoiler finite element simulation model, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly are analyzed in the pre-processing software and post-processing software.

[0108] The horn vibration strength performance module 140 is communicatively connected to the spoiler finite element simulation model module 120. The horn vibration strength performance module 140 is used in the pre-processing software to call beam units to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam unit, KINCOUP is called to install the horn to multiple horn mounting positions on the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, and based on the displacement information of the connection points where the horn is installed on the spoiler finite element simulation model and the spoiler finite element... The Mises stress information of the simulation model is used to calculate the vibration intensity result of the spoiler assembly horn using the simulation solver. The vibration intensity result of the spoiler assembly horn is imported into the post-processing software to obtain the third maximum Mises stress value among multiple horn clamping positions. When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the spoiler assembly horn vibration intensity performance meets the requirements. When the third maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structural data is adjusted until the third maximum Mises stress value is less than the preset material yield strength.

[0109] The automotive spoiler assembly performance simulation analysis system of the present invention first imports the spoiler assembly structural data into the pre-processing software, and calls the mid-surface element to perform mid-surface processing on the spoiler assembly structural data to obtain a simplified spoiler model; then, in the pre-processing software, the simplified spoiler model is subjected to parametric counterweight assembly simulation processing based on finite element mesh to obtain a finite element simulation model of the spoiler; finally, based on the connection conditions of the finite element simulation model of the spoiler and the load forces acting on the finite element simulation model of the spoiler, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly are analyzed in the pre-processing software and post-processing software.

[0110] Simulation analysis is used to verify the main basic performance indicators of the spoiler, including spoiler assembly modes, spoiler assembly stiffness, spoiler assembly strength, and important properties of the spoiler's resistance to abnormal forces. Simulation analysis replaces bench testing to verify the performance of the automotive spoiler assembly, identify potential design risks, and optimize the structural design. This solves the technical problems of long development cycles and high development costs caused by the current design stage's reliance on experimental verification of the performance of automotive spoiler assemblies.

[0111] Specifically, this embodiment corresponds one-to-one with the above method embodiments. The functions of each module have been described in detail in the corresponding method embodiments, so they will not be repeated here.

[0112] Based on the same inventive concept, embodiments of this application also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements all or part of the method steps of the above method.

[0113] The present invention can implement all or part of the processes in the above methods, or it can be accomplished by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0114] Based on the same inventive concept, embodiments of this application also provide an electronic device, including a memory and a processor. The memory stores a computer program that runs on the processor. When the processor executes the computer program, it implements all or part of the method steps described above.

[0115] The processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of the computer device, connecting all parts of the computer device through various interfaces and lines.

[0116] Memory can be used to store computer programs and / or modules. The processor performs various functions of the computer device by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can primarily include a program storage area and a data storage area. The program storage area can store the operating system and at least one application program required for a function (e.g., sound playback, image playback, etc.); the data storage area can store data created based on the use of the mobile phone (e.g., audio data, video data, etc.). Furthermore, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, SmartMedia Cards (SMC), Secure Digital (SD) cards, Flash Cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0117] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, servers, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0118] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), servers, and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0119] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0120] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0121] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for performance simulation analysis of an automotive spoiler assembly, characterized in that, Includes the following steps: Import the spoiler assembly structure data into the preprocessing software, call the center-surface unit to perform center-surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model. In the pre-processing software, the simplified model of the spoiler is simulated by parametric counterweight assembly based on the finite element mesh to obtain the finite element simulation model of the spoiler. Based on the connection conditions and load forces acting on the finite element simulation model of the spoiler, the modal performance, stiffness performance, strength performance and resistance to abnormal forces of the spoiler assembly are analyzed in the pre-processing software and post-processing software. The step of "analyzing the strength performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, the COUP_DIS element is called at at least three maximum span positions of the buckle of the spoiler finite element simulation model to simulate the application of the second preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the strength result of the spoiler assembly. Import the spoiler assembly strength results into the post-processing software to obtain the first maximum Mises stress value among at least three clips of the spoiler finite element simulation model; When the first maximum Mises stress value is less than the preset material yield strength, the strength performance simulation of the spoiler assembly meets the requirements. When the first maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first maximum Mises stress value is less than the preset material yield strength. The step of "analyzing the abnormal force resistance performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, COUP_DIS elements are called at multiple positions on one side of the rear edge of the spoiler finite element simulation model to simulate the application of the third preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the abnormal force resistance strength of the spoiler assembly. Import the abnormal force resistance strength results of the spoiler assembly into the post-processing software to obtain the second maximum Mises stress value at multiple locations on one side of the rear edge of the spoiler finite element simulation model. When the second maximum Mises stress value is less than the preset material yield strength, the simulation of the abnormal force resistance performance of the spoiler assembly meets the requirements. When the second maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the second maximum Mises stress value is less than the preset material yield strength.

2. The performance simulation analysis method for automotive spoiler assembly as described in claim 1, characterized in that, The step of "simulating the parametric counterweight assembly of the simplified spoiler model based on a finite element mesh in the pre-processing software to obtain the finite element simulation model of the spoiler" includes the following steps: In the pre-processing software, the simplified model of the spoiler assembly is meshed using finite element methods. After assembling and connecting the various accessories of the simplified spoiler model, the counterweights of the various accessories of the simplified spoiler model are simulated and set, and the properties of the simplified spoiler model are set to obtain the finite element simulation model of the spoiler.

3. The performance simulation analysis method for automotive spoiler assembly as described in claim 1, characterized in that, The step of "analyzing the modal performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the pre-processing software, the rbe2 element is called to simulate the connection between the finite element simulation model of the spoiler and the vehicle model. By establishing constraints at the center node of the rbe2 element, and based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model, the simulation solver is called to calculate the modal characteristic results of the spoiler assembly. Import the modal characteristic results of the spoiler assembly into the post-processing software to obtain the first-order global modal frequency value of the spoiler assembly; When the first-order overall modal frequency value is greater than the preset modal frequency value, the modal performance simulation of the spoiler assembly meets the requirements. When the first-order overall modal frequency value is less than the preset modal frequency value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first-order overall modal frequency value is greater than the preset modal frequency value.

4. The performance simulation analysis method for automotive spoiler assembly as described in claim 1, characterized in that, The step of "analyzing the stiffness performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the preprocessing software, the rbe2 element is called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the rbe2 element, and applying a first preset load force at the middle part of the spoiler finite element simulation model and the weak bending stiffness position of the spoiler assembly, the simulation solver is called to calculate the stiffness result of the spoiler assembly based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the stress information of the spoiler finite element simulation model. Import the stiffness results of the spoiler assembly into the post-processing software to obtain the Z-direction displacement values ​​of the middle part of the spoiler finite element simulation model and the weak points of the bending stiffness of the spoiler assembly. When the Z-direction displacement value is less than the preset displacement value, the stiffness performance simulation of the spoiler assembly meets the requirements. When the Z-direction displacement value is greater than the preset displacement value, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the Z-direction displacement value is less than the preset displacement value.

5. The performance simulation analysis method for automotive spoiler assembly as described in claim 1, characterized in that, Following the step of "analyzing the modal performance, stiffness performance, strength performance, and resistance to abnormal forces of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model", the following steps are included: In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam element, KINCOUP is called to install the horn to multiple horn mounting positions in the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, the simulation solver is called to calculate the horn vibration intensity result of the spoiler assembly based on the displacement information of the connection point of the horn installed on the spoiler finite element simulation model and the Mises stress information of the spoiler finite element simulation model. Import the horn vibration intensity results of the spoiler assembly into the post-processing software to obtain the third maximum Mises stress value among multiple horn snap-fit ​​positions; When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the horn vibration strength performance of the spoiler assembly meets the requirements. When the third maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structural data or the spoiler finite element simulation model is adjusted.

6. A performance simulation analysis system for an automotive spoiler assembly, characterized in that, include: The spoiler simplified model module is used to import spoiler assembly structure data into the preprocessing software, call the center surface unit to perform center surface processing on the spoiler assembly structure data, and obtain a simplified spoiler model. A spoiler finite element simulation model module, communicatively connected to the spoiler simplified model module, is used to perform parametric weight assembly simulation processing on the simplified spoiler model based on a finite element mesh in pre-processing software to obtain a spoiler finite element simulation model; and... The basic performance analysis module of the spoiler assembly is connected to the spoiler finite element simulation model module. Based on the connection conditions and load forces acting on the spoiler finite element simulation model, the modal performance, stiffness performance, strength performance and abnormal force resistance performance of the spoiler assembly are analyzed in the pre-processing software and post-processing software. The step of "analyzing the strength performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, the COUP_DIS element is called at at least three maximum span positions of the buckle of the spoiler finite element simulation model to simulate the application of the second preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the strength result of the spoiler assembly. Import the spoiler assembly strength results into the post-processing software to obtain the first maximum Mises stress value among at least three clips of the spoiler finite element simulation model; When the first maximum Mises stress value is less than the preset material yield strength, the strength performance simulation of the spoiler assembly meets the requirements. When the first maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the first maximum Mises stress value is less than the preset material yield strength. The step of "analyzing the abnormal force resistance performance of the spoiler assembly in pre-processing and post-processing software based on the connection conditions and load forces acting on the spoiler finite element simulation model" includes the following steps: In the pre-processing software, beam elements are called to simulate the connection between the spoiler finite element simulation model and the vehicle model. Constraints are established at the center node of the beam element. At the same time, COUP_DIS elements are called at multiple positions on one side of the rear edge of the spoiler finite element simulation model to simulate the application of the third preset load force. Based on the displacement information of the connection point of the spoiler finite element simulation model installed on the vehicle model and the Mises stress information of the spoiler finite element simulation model, the simulation solver is called to calculate the abnormal force resistance strength of the spoiler assembly. Import the abnormal force resistance strength results of the spoiler assembly into the post-processing software to obtain the second maximum Mises stress value at multiple locations on one side of the rear edge of the spoiler finite element simulation model. When the second maximum Mises stress value is less than the preset material yield strength, the simulation of the abnormal force resistance performance of the spoiler assembly meets the requirements. When the second maximum Mises stress value is greater than the preset material yield strength, the spoiler assembly structure data or the spoiler finite element simulation model is adjusted until the second maximum Mises stress value is less than the preset material yield strength.

7. The automotive spoiler assembly performance simulation analysis system as described in claim 6, characterized in that, It also includes a horn vibration strength performance module that is communicatively connected to the spoiler finite element simulation model module. The horn vibration strength performance module is used to call beam elements in the pre-processing software to simulate the connection between the spoiler finite element simulation model and the vehicle model. By establishing constraints at the center node of the beam element, KINCOUP is called to install the horn to multiple horn mounting positions of the spoiler finite element simulation model. After applying a fourth preset load force at the multiple horn mounting positions, the simulation solver is called to calculate the horn vibration strength result of the spoiler assembly based on the displacement information of the connection point where the horn is installed on the spoiler finite element simulation model and the Mises stress information of the spoiler finite element simulation model. The horn vibration strength result of the spoiler assembly is imported into the post-processing software to obtain the third maximum Mises stress value among the multiple horn mounting positions. When the third maximum Mises stress value is less than the preset material yield strength, the simulation of the horn vibration strength performance of the spoiler assembly meets the requirements; when the third maximum Mises stress value is greater than the preset material yield strength, the structural data of the spoiler assembly is adjusted until the third maximum Mises stress value is less than the preset material yield strength.

8. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the performance simulation analysis method for the automotive spoiler assembly as described in any one of claims 1 to 5.

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