Review on Analysis of Spur Gear by FEA and ESA

As we know gear is one of the most critical components in a mechanical power transmission system, failure of one gear will affect on the whole transmission system. The contact stress in the mating gear is the key parameter in gear design. Contact stress refers to the localized stresses that develop as two curved surfaces come in contact and deform slightly under the imposed loads. Also due to contact stresses wear takes place at gear tooth. Consequently tooth thins down and gets weakened. Pitting is a surface fatigue failure of the gear tooth. The gears are generally fails when the working stress exceeds the maximum permissible stress and if we want to design a healthy system with defined performance efficiency through working life cycles, it is important to predict stresses developed & effectively reduce them. They develop high stress concentration at the root. Therefore it is necessary to find the root cause which result into failure of gear and try to eliminate these causes. Many of the researchers nationally and internationally found gear contact analysis as a field of interest with wide scope of research. This paper discuss on the review of different analysis of gear pair. In this study investigating and optimizing the root fillet of starter pinion by FEA and ESA.