Tooth Fillet Stresses of Gear with Thin Rim : 1st report, Automatic Meshing for FEM Calculation

Abstract

This paper introduces an Automatic Mesh Generator (AMG) for finite element method (FEM) to analyze tooth fillet stresses of gears with a thin rim. The AMG incorporates 'Basic Mesh', i.e., a set of regular meshes : Nodes and elements for the FEM calculation are efficiently decided on the basic mesh. Coordinates of nodes of the model are calculated by an imaginary elastic deformation of the basic mesh. By the selection of a proper form of the mesh and by changing the imaginary elastic characteristics of the basic mesh, a proper distribution of nodes on the model for FEM-analysis is obtained. The amount of input data to AMG is determined only by the complexity of the model shape. The input data for another similar model can be easily made by a little correction of the input data. The values of the gear tooth fillet stresses calculated by FEM using this AMG showed satisfactory results.