Piston mesh division structure

Abstract

The invention provides a piston mesh division structure which is used for conducting CAE analysis on a piston. A mesh enveloping model of the piston comprises a first mesh model and a second mesh model, wherein the first mesh model envelops a piston body, and the second mesh model envelops a piston pin hole part of the piston body. The second mesh model is a hexahedral mesh enveloping model built on the piston pin hole part. CAE analysis meshes on the piston pin hole part are divided into hexahedral meshes, the hexahedral meshes are high in quality and uniform in density, contact analysis operation can be easily converged, the number of the hexahedral meshes is smaller than the number of tetrahedral meshes, and therefore high processing speed can be acquired, a more accurate analysis result can be acquired, and the solving speed of CAE analysis of the piston is higher.

Description

technical field [0001] The invention relates to the technical field of piston CAE analysis, and more specifically, relates to a piston grid division structure. Background technique [0002] The piston is one of the key components of the internal combustion engine, and its working conditions are directly related to the working reliability and durability of the internal combustion engine. The structure of the piston and the working environment are very complex, so the finite element analysis of the coupled stress field of the piston is carried out , it is of great significance to improve its thermal load and comprehensive stress distribution. [0003] At present, when performing CAE analysis on pistons, most of the meshes are automatically and quickly generated by software when dividing the pre-processing meshes of the pistons. This meshing method can only generate tetrahedral meshes. It is difficult to obtain accurate results during analysis. [0004] In order to obtain mor...

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Problems solved by technology

[0003] At present, when performing CAE analysis on pistons, most of the meshes are automatically and quickly generated by software when dividing the pre-processing meshes of the pistons. This meshing method can only generate tetrahedral meshes. It is difficult to get accurate results when analyzing

[0004] In order to obtain more accurate results as much as possible, in general, when dividing the grid, the unit length of the grid is reduced, so that the grid becomes denser, resulting in longer analysis and solution time, and lower CAE analysis work efficiency

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