Published Paper Details:

Gear transmission is a major form of power transmission, of which the reliability greatly affects the life of many mechanical devices. Gears have two main failure modes, namely tooth surface pitting and tooth root fracture. Tooth surface pitting is mainly due to excessive contact stress and tooth root fracture is mainly due to excessive bending stress. In spur gears, the maximum bending stress concentration is known to occur in the gear tooth fillet region. This study focuses on the geometric optimization of symmetric involute gears to alleviate stress concentrations near the fillet. Stress relief is achieved by incorporating strategically placed holes in the area between adjacent teeth. The size and location of these features are varied to reduce bending stresses, leading to increased load capacity, extended gear lifetime, reduced manufacturing costs, and minimized noise and vibration. CATIA V5 software are used to model spur gears and ANSYS software are used for geometric optimization process to achieve the desired stress distribution