Mesh division method for finite element model of driving gear set of large-scale heading machine

Abstract

The invention belongs to the field of multi-parameter optimization and reliability design of a main bearing of a large-scale heading machine, and provides a mesh generation method for a finite element model of a driving gear set of the large-scale heading machine. According to the method, when meshing is carried out, the geometrical characteristics of gear teeth are fully considered, and the meshing area segmentation method is carried out on the gear tooth surface by copying the gear tooth contour line, so that the geometric reduction degree of a finite element model is effectively improved; the defect that the number of grids and the quality of the grids cannot be obtained at the same time in an existing gear grid division method is overcome, and the accuracy of finite element simulation analysis is ensured; conditions such as grid cell types, grid cell sizes, grid cell layers, the number of gear teeth divided by a small gear encrypted grid, the number of gear teeth divided by a large gear ring encrypted grid, the number of gear teeth reserved by the large gear ring and the like are flexibly adjusted, so that simulation analysis requirements of different types of finite elements are met, and high universality is achieved.

Description

technical field [0001] The invention relates to the field of multi-parameter optimization and reliability design of a main bearing of a large-scale roadheader, in particular to a grid division method for a finite element model of a driving gear set of a large-scale roadheader. Background technique [0002] The drive gear set of the large-scale roadheader is the center of the power output of the roadheader, which plays the role of supporting the cutter head, input torque, and connecting the bearings; due to the different hardness of the soil layer, the drive gear set will bear alternating loads during work, and The load change is relatively drastic, and in severe cases, the root of the tooth will be broken, resulting in the failure of the main drive system; during the construction process, the damage of the main drive system is a huge loss to the entire project, and underground maintenance or replacement is very difficult, so the main drive system The load-carrying capacity c...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the gap in the grid division method of the driving gear set of the large-scale roadheader, and proposes a grid division method for the finite element model of the drive gear set of the large-scale roadheader. Real engineering problems such as large number of grids, poor grid quality, slow grid division speed, and large computational resource occupation;

Images