DETERMINATION OF OPTIMUM MESH SIZE TO MEASURE TOOTH ROOT STRESS OF SPUR GEAR USING FINITE ELEMENT ANALYSIS

Gears are one of the most important power transmission elements. High speed gear and gear which has high loading capacity are necessary for engineering applications. Gears should be analyzed theoretically according to design criteria and tested. Theoretical analysis is generally performed by using finite element methods through simulating gears. In this study, spur gears at definite module and teeth number are modelled by Catia. They are analyzed by using SimXpert and Marc softwares for different loads on pitch circle. Tooth root bending stress values are recorded after analysis. Meshing, mesh size selection and mesh type are one of important steps for FEM. Different meshes (fine and coarse) are used for tooth root and other regions of gear profiles in this study. At tooth root, different mesh sizes are experienced and tooth root stress values are obtained. These values are compared with analytical calculation results to state optimal mesh size.

Keywords:

Finite Element Analysis, Spur Gears, Mesh Size, Tooth Root Stress,

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