SIMPLE FORMULAS TO COMPUTE MAXIMUM STRESS IN THIN-RIM SPUR GEARS

Using stress values obtained by the finite element method (FEM), simpl e formulas are proposed to compute maximum stress around tooth fillet of thin-rim spur gear. They can be used to compute the stress distribu tion caused by the deformation of the tooth and/or by the deformation of the rim. The results are compared with others already published. Th e parameters of the formulas are diametral pitch and rim thickness for internal and external gears. The fitting pressure and the presence of a keyseat or spline teeth are also considered for external gears.