Direct finite element mesh generation method based on tire structure characteristics

Abstract

The invention provides a direct finite element mesh generation method based on tire structure characteristics, which solves the technical problems of low efficiency and high difficulty of existing tire finite element analysis, and mainly comprises the following steps: S1, obtaining a tire material distribution diagram wireframe model; s2, generating a two-dimensional surface model; s3, identifying a material region; s4, extracting feature edges and feature points; s5, generating discrete grid lines; s6, dispersing the two-dimensional plane model of the tire material distribution diagram; and S7, generating a tire finite element mesh model file. According to the method, the finite element model file is obtained by adopting a method of directly dispersing the geometric model of the tire material distribution diagram, the dependence on commercial finite element modeling software is eliminated, the data transmission path and the data loss are reduced, and the difficulty of establishing the tire finite element model is greatly reduced through a full-automatic finite element grid division process; the simulation analysis efficiency and the product research and development capability are improved, and the method can be widely applied to the technical field of simulation analysis.

Description

technical field [0001] The invention relates to the technical field of simulation analysis, in particular to a direct finite element mesh generation method based on tire structural features. Background technique [0002] Tire finite element analysis has become an indispensable tire performance prediction method in the tire design process. Finite element analysis plays an important role in the selection of design schemes, tire performance improvement and tire performance mechanism research. It can reduce the number of product trials, accelerate the iterative upgrade of product performance, and reduce R&D costs. [0003] The creation of finite element model in tire finite element analysis is a tedious and meticulous work. Simply put, the two-dimensional geometric model of tire cross-section is discretized into a certain number of quadrilateral and triangular mesh models. The tire structure is essentially a composite material structure, which is formed by vulcanization of seve...

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Problems solved by technology

[0004] The difficulty of the tire finite element model above limits the use of tire finite element analysis methods by tire design engineers. Therefore, it is necessary to invent a method for quickly generating finite element model files from the tire two-dimensional cross-sectional CAD design model, and realize tire finite element analysis by computer programming. Automatic creation of metamodels

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