ANSYS-based automobile instrument screw pre-fixation simulation method

Abstract

The invention discloses an ANSYS-based automobile instrument screw pre-fixation simulation method, which comprises the steps of drawing a screw pre-fixation assembly 2D model, including a screw model, a workpiece model and a connecting part model; importing the 2D model into ANSYS software, and setting boundary conditions including defining material attributes, loading conditions, contact conditions and constraint conditions; loading conditions are applied to the 2D model, and stress distribution, deformation conditions and contact pressure in the screw pre-fixing process are calculated based on ANSYS simulation; and according to a simulation result in the step S300, optimizing a screw pre-fixing scheme, wherein the pre-tightening force and the torque of the screw model are adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of computer-aided design, and particularly relates to a simulation method for pre-fixing screws of an automotive instrument based on ANSYS. Background Art

[0002] In the field of automotive manufacturing, screw pre-fixing is a common assembly method used to provide a firm connection between automotive components. Traditional screw pre-fixing methods mainly rely on experience and tests to determine the pre-tightening force and torque of screws, suffering from problems such as low efficiency, high cost, and the inability to accurately predict the stress and deformation during the assembly process. Therefore, a more accurate and efficient screw pre-fixing analysis method is needed to improve the assembly quality and save costs. Summary of the Invention

[0003] Based on the above situation, the main object of the present invention is to provide a simulation method for pre-fixing screws of an automotive instrument based on ANSYS, which can accurately predict the stress, deformation, and contact state during the screw pre-fixing process, and can help engineers more accurately predict the stress and deformation conditions during the assembly process, improving the assembly accuracy and reliability.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A simulation method for pre-fixing screws of an automotive instrument based on ANSYS, comprising the steps of:

[0006] S100, drawing a 2D model of the screw pre-fixing assembly, including a screw model, a workpiece model, and a connecting component model;

[0007] S200, importing the 2D model into ANSYS software, and setting boundary conditions, including defining material properties, loading conditions, contact conditions, and constraint conditions;

[0008] S300, applying loading conditions to the 2D model, and calculating the stress distribution, deformation conditions, and contact pressure during the screw pre-fixing process based on ANSYS simulation;

[0009] S400, optimizing the screw pre-fixing scheme according to the simulation results of step S300, including adjusting the pre-tightening force and torque of the screw model.

[0010] Preferably, in step S100,

[0011] the 2D model includes the geometric shapes, dimensions, and material properties of the screw model, the workpiece model, and the connecting component model.

[0012] Preferably, in step S200, defining the material properties includes: defining the materials of the screw model, the workpiece model, and the connecting component model in the 2D model.

[0013] Preferably, the defined loading conditions in step S200 include: applying remote displacements to the screws and screw pre-fixations in the 2D model, and the displacement amount is set according to the movement stroke and direction of the components in the 2D model.

[0014] Preferably, the defined contact conditions in step S200 include: performing contact settings on the edges that will come into contact during the screw pre-fixation in the 2D model and the installation of the mating part, and selecting friction as the contact type.

[0015] Preferably, the defined constraint conditions in step S200 include: fixedly supporting the entire surface of the mating part.

[0016] Preferably, step S200 further includes:

[0017] Symmetric setting, selecting "2D axisymmetric" as the symmetry type, setting the repetition number and △ θ;

[0018] Analysis setting, turn on large deflection.

[0019] The present invention also discloses an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of any method of the present invention are implemented.

[0020] The present invention also discloses a computer-readable storage medium, characterized in that the computer-readable storage medium stores machine-executable instructions. When the machine-executable instructions are called and run by a processor, the processor executes any method of the present invention.

[0021] The present invention also discloses a production method for pre-fixing screws of an automotive instrument, and the method pre-fixes the screws of the automotive instrument by any method of the present invention.

[0022] The 2D simulation analysis method for screw pre-fixation based on ANSYS of the present invention can accurately predict the stress, deformation, and contact state during the screw pre-fixation process, which can help engineers more accurately predict the stress and deformation conditions during the assembly process, improve the assembly accuracy and reliability. Compared with the 3D model simulation, the 2D simulation has a shorter calculation time, saving a large amount of time. And through the simulation analysis, the test cost and time are saved, and the work efficiency is improved. The scheme can be optimized based on the simulation results, improving the assembly quality and performance. The computer-aided engineering technology is adopted, improving the accuracy and reliability of the screw pre-fixation analysis.

[0023] Other beneficial effects of the present invention will be described in the specific embodiments through the introduction of specific technical features and technical solutions. Those skilled in the art should be able to understand the beneficial technical effects brought by the technical features and technical solutions through these introductions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the ANSYS-based simulation method for pre-fixing automotive instrument screws according to the present invention will be described below with reference to the accompanying drawings. In the figures:

[0025] Figure 1 FIG. is a flowchart of an ANSYS-based simulation method for pre-fixing automotive instrument screws according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Figure 1 FIG. is a flowchart of an ANSYS-based simulation method for pre-fixing automotive instrument screws according to a preferred embodiment of the present invention, including step S100 of drawing a 2D model of the screw pre-fixing assembly, including a screw model, a workpiece model, and a connecting component model; step S200 of importing the 2D model into ANSYS software and setting boundary conditions, including defining material properties, loading conditions, contact conditions, and constraint conditions; step S300 of applying loading conditions to the 2D model and calculating the stress distribution, deformation conditions, and contact pressure during the screw pre-fixing process based on ANSYS simulation; step S400 of optimizing the screw pre-fixing scheme according to the simulation results of step S300, including adjusting the pre-tightening force and torque of the screw model.

[0027] The ANSYS-based 2D simulation analysis method for screw pre-fixing of the present invention can accurately predict the stress, deformation, and contact state during the screw pre-fixing process, which can help engineers more accurately predict the stress and deformation conditions during the assembly process, improve the assembly accuracy and reliability. Compared with 3D model simulation, the 2D simulation has a shorter calculation time, saving a large amount of time. And through simulation analysis, it saves the test cost and time, improves the work efficiency, can optimize the scheme based on the simulation results, improves the assembly quality and performance, and adopts computer-aided engineering technology, improving the accuracy and reliability of the screw pre-fixing analysis.

[0028] In a preferred embodiment, the 2D model in step S100 includes the geometric shapes, dimensions, and material properties of the screw model, the workpiece model, and the connecting component model. Thus, it can ensure that the 2D model accurately reflects the actual assembly situation. That is to say, during the drawing process, factors such as the geometric features of the screw and the material properties of the workpiece need to be considered. In the specific embodiment, the thread shape of the screw can be ignored.

[0029] In a preferred embodiment, the material properties defined in step S200 include: defining the materials of the screw model, workpiece model, and connecting component model in the 2D model.

[0030] In a preferred embodiment, the loading conditions defined in step S200 include: applying remote displacements to the screws and screw pre-fixings in the 2D model, and the displacement amount is set according to the movement stroke and direction of the components in the 2D model.

[0031] In a preferred embodiment, the contact conditions defined in step S200 include: setting the contacts for the edges that will come into contact during the screw pre-fixing and the installation of the counter-piece in the 2D model, and selecting friction as the contact type.

[0032] In a preferred embodiment, the constraint conditions defined in step S200 include: fixedly supporting the entire surface of the counter-piece.

[0033] In a preferred embodiment, step S200 further includes:

[0034] Symmetric setting, selecting "2D axisymmetric" as the symmetry type, and setting the repetition number and Δθ;

[0035] Analysis setting, turning on large deflections. As many analysis steps as possible can be set to facilitate calculation convergence. For example, the initial sub-step in the analysis setting can be set to 200, the minimum sub-step can be set to 20, and the maximum sub-step can be set to 1E+07.

[0036] The above steps ensure accurate setting of the boundary conditions of the 2D model to guarantee the accuracy and reliability of the simulation analysis.

[0037] In a specific embodiment, step S300 is to perform a static analysis on the 2D model. By applying the loading conditions, parameters such as the stress distribution, deformation, and contact pressure during the screw pre-fixing process are calculated. During the analysis, it is judged whether each component will rupture during the movement process by the magnitude of the stress suffered by each component during the movement process.

[0038] In a specific embodiment, step S400 is to perform an optimization design. According to the simulation results, the screw pre-fixing scheme is optimized. The pre-tightening force, torque, and other parameters of the screw model can be adjusted to optimize the assembly scheme to improve the assembly quality and performance. During the optimization design process, various factors such as strength, stiffness, and weight can also be comprehensively considered.

[0039] During the testing process, the accuracy and reliability of the simulation results can also be evaluated, and the effectiveness of the screw pre-fixing scheme can be verified. Specifically, it can be to verify the accuracy of the simulation analysis by comparing with the actual test results. According to the evaluation results, the design scheme can be further adjusted to meet the assembly requirements and performance indicators.

[0040] The present invention also discloses an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of any one of the methods of the present invention are implemented.

[0041] The present invention also discloses a computer-readable storage medium storing machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the processor executes any one of the methods of the present invention.

[0042] The present invention also discloses a method for pre-fixing screws of an automotive instrument. The method pre-fixes the screws of the automotive instrument according to any one of the methods of the present invention.

[0043] It should be noted that in the present invention, step numbers (letter or number numbers) are used to refer to certain specific method steps only for the purpose of convenient and concise description, and by no means to limit the order of these method steps by letters or numbers. Those skilled in the art can understand that the order of relevant method steps should be determined by the technology itself and should not be unduly restricted by the existence of step numbers.

[0044] Those skilled in the art can understand that on the premise of no conflict, the above preferred solutions can be freely combined and superimposed.

[0045] It should be understood that the above embodiments are exemplary rather than restrictive. Without departing from the basic principle of the present invention, various obvious or equivalent modifications or substitutions made by those skilled in the art to the above details will be included within the scope of the claims of the present invention.

Claims

1. A simulation method for pre-fixing screws of an automotive instrument based on ANSYS, characterized in that, Including the steps: S100, draw a 2D model of screw pre - fixing assembly, including a screw model, a workpiece model, and a connecting component model; S200, import the 2D model into ANSYS software, and set boundary conditions, including defining material properties, loading conditions, contact conditions, and constraint conditions; S300, apply loading conditions to the 2D model, and based on ANSYS simulation, calculate the stress distribution, deformation conditions, and contact pressure during the screw pre - fixing process; S400, optimize the screw pre - fixing scheme according to the simulation results of step S300, including adjusting the pre - tightening force and torque of the screw model.

2. The ANSYS-based simulation method for pre-fixing automotive instrument screws according to claim 1, wherein In the step S100, the 2D model includes the geometric shapes, dimensions, and material properties of the screw model, workpiece model, and connecting component model.

3. The ANSYS-based simulation method for pre-fixing screws of automotive instrument according to claim 1, characterized in that, Defining material properties in the step S200 includes: defining the materials of the screw model, workpiece model, and connecting component model in the 2D model.

4. The ANSYS-based simulation method for pre-fixing automotive instrument screws according to claim 1, characterized in that Defining loading conditions in the step S200 includes: applying remote displacements to the screws and screw pre - fixing in the 2D model, and the displacement amount is set according to the movement stroke and direction of the components in the 2D model.

5. The ANSYS-based simulation method for pre-fixing screws of automotive instrument according to claim 1, wherein Defining contact conditions in the step S200 includes: performing contact settings on the edges that will come into contact during screw pre - fixing and the installation of the mating part in the 2D model, and selecting friction as the contact type.

6. The ANSYS-based simulation method for pre-fixing screws of an automotive instrument according to claim 5, characterized in that, Defining constraint conditions in the step S200 includes: fixing and supporting the entire surface of the mating part.

7. The ANSYS-based simulation method for pre-fixing screws of an automotive instrument according to claim 1, characterized in that, The step S200 also includes: Symmetry setting, selecting "2D axisymmetric" as the symmetry type, and setting the repetition number and Δθ; Analysis setting, turning on large deflection.

8. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 7 above.

9. A computer-readable storage medium, characterized in that, The computer - readable storage medium stores machine - executable instructions. When the machine - executable instructions are called and run by the processor, the processor executes the method described in any one of claims 1 to 7 above.

10. A production method for pre-fixing screws of an automotive instrument, characterized in that, The method pre - fixes the screws of the automotive instrument according to the method described in any one of claims 1 - 7.

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