Technical Paper
Study of Impact Loading on Helical Gears using Finite Element Analysis
2013-04-08
2013-01-1773
Helical gears in manual transmission are designed based on static loading. Sometimes these gears are subjected to impact during misuse events such as sudden engagement and disengagement of clutches, inappropriate shifting of gears, while vehicle is negotiating different maneuvers. These misuse events call for the need to consider the study the gear strength under impact loading in design phase. In this paper, attempt is made to evaluate stresses in the gear root under impact using the dynamic implicit algorithm available with commercial Finite element analysis (FEA) software Abaqus. Dynamic analysis is run for duration of few milliseconds to capture both impact and rebounding events. First gear pair, which is generally heavy loaded among all gear pairs, is considered for simulation. Initially, static analysis is performed for different pitch positions of one mesh to find out the most critical pitch position in which stresses in fillets reach their peak values.