Meshing Characteristic And Stress Analysis Of Involute Gears With The Asymmetric Teeth

Firstly, based on research of the asymmetric involute gear cutter and the gearing theories, the universal tooth flank curve equations of asymmetric gear with two pressure angles and the tooth transmission curve are derived by the gear shape nomal method, then the FEA model of asymmetric involute gear with main parameters is automatically generated with ANSYS Parametric Design Language (APDL). Secondly, the bending stress equations of asymmetric involute gear with two pressure angles are derived by the theory of isotropy wedge; the contact stress equations of asymmetric involute gear are derived by the classical contact theory of Hertz's. Bending stress of asymmetric involute gears is analyzed by the use of Finite Element Method (FEA), from which it can be obtained how the pressure angles and the point of load put on influence the blend stress. Contacting stress of asymmetric involute gear is calculated by FEA, some valuable conclusions are educed comparing with symmetric gear and asymmetric gear with the pressure angles changed. Finally,based on the parametric method, a parametric FEA modeling and post process software was developed by using APDL and Visual Basic Language.