Finite element design method for working torque of automobile spherical hinge

Abstract

The invention provides a finite element design method for working torque of an automobile spherical hinge. The method includes the following steps of S1, creating a geometric model of the automobile spherical hinge in finite element software; S2, defining material parameters of a spherical pin seat in the finite element software; S3, defining a spherical pin as a main surface and the spherical pinseat as a secondary surface, defining a friction coefficient according to the cone penetration degree of spherical hinge lubricating grease, and setting the minimum axial force magnitude; S4, dividing a grid, and obtaining a rotation torque simulation result and a swing torque simulation result through the solution by the finite element software; S5, performing a working torque test experiment onan actual automobile spherical hinge under the same conditions to obtain a rotational torque experimental result and a swing torque experimental result; S6, verifying the correctness of the automobile spherical hinge working torque finite element model. The method can shorten the development period of automobile spherical hinge products, saves the manufacture and repeated experiment of a spherical hinge experimental sample, and has the outstanding advantages of improving the development efficiency and effectively reducing the development cost.

Description

Technical field [0001] The invention relates to the technical field of design and development of automotive spherical hinge products, in particular to a finite element design method for the working torque of automotive spherical hinges. Background technique [0002] The structure of the car spherical hinge is like figure 1 As shown, it mainly includes a ball pin 1, a ball pin seat 2 and a ball pin sleeve 3. The working torque of an automobile ball joint includes swing moment and rotation moment, which are important performance parameters of an automobile ball joint. [0003] At present, the design and development of automotive spherical hinge products is mainly focused on empirical design, that is, analyzing and optimizing the structure through a large amount of test data. This design and development method leads to a large gap between the simulated working torque and the test data, which is 200% or more, and the acceptable standard setting value is usually about 7%. Therefore, it...

AI Technical Summary

Problems solved by technology

This design and development method leads to a large gap between the simulated working torque and the test data, the difference is 200% or more, and the acceptable standard setting value is usually about 7%.

Therefore, it will inevitably increase the development cycle and development cost of automotive spherical hinge products, and reduce the development efficiency of automotive spherical hinge products

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