Optimization of design based on Fillet radius and tooth width to minimize the stresses on the Spur Gear with FE Analysis

Gears are one of the most critical components in mechanical power transmission system. Spur gears are mostly used in the applications varying from domestic items to heavy engineering applications. The contact stress and tooth stresses due to transmission depends on some parameters. In this paper the effect of tip radius, tooth width is considered and how the contact stress results vary with these parameters is studied. The Gear design is optimized based on FE analysis. The stresses were calculated using the Lewis equation and then compared with the FE model. The Bending stresses in the tooth root and at mating region were examined using 3D FE mode.