Contact Stress Analysis of Mitre Bevel Gear Pairs by Numerical and Analytical Approach

The gears0are used for a wide range of industrial0applications. Their0function is to convert input0provided by prime mover into an output with lower0speed and corresponding0higher torque. Contact9stress is generally the deciding0factor for the determination0of the requisite dimensions9of gears. Research9on gear action has confirmed fact that beside contact9pressure, sliding9velocity, viscosity of lubricant9as well as other factors such as frictional9forces, contact stresses0also influence the formation of pits on the tooth0surface. So thorough0study of contact stress developed0between the different matting0gears are mostly important0for the gear design. Current0Analytical methods of calculating0gear contact stresses0use Hertz’s0equations, which were originally0derived for contact between0two cylinders. So for contact9stress it is necessary to develop0and to determine appropriate0models of contact0elements, and to calculate0contact stresses and tooth bending stress of mitre bevel gear using ABAQUS and compare0the results with Hertzian0theory.