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Investigation of Stress Concentration and Fatigue Life of Axle Drive Shaft with Relief Groove  

Shin, Jae-Myung (동아대학교 대학원 기계공학과)
Han, Seung-Ho (동아대학교 기계공학과)
Han, Dong-Sub (동아대학교 기계공학과)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.11, no.1, 2012 , pp. 88-94 More about this Journal
Abstract
An axle drive shaft with double joint shaft, cross kit and yoke has an important role by transferring power and changing steering angle between axle and wheel in power train system. It has been used widely in the heavy machinery requiring a high reliability in the power train system. At fatigue failures of the axle drive shaft with the long span, a relatively high stress concentration at a snap ring groove on the drive shaft brings to significant fatigue damages under repeated loading condition. As Peterson's suggestions on this study, a relief groove in the vicinity of the snap ring groove is applied by decreasing the stress concentration and improving the fatigue life of axle drive shaft. By using FEM analysis, the decreasing effect of the stress concentration and extended fatigue life are due to the change of design parameters related with size and location of the relief groove. The relief groove with the design parameters such as d/b=2.0 and r/h=1.2 enables to decrease the stress concentration of 22.3% and increase the fatigue life more than 3 times by comparing with no relief groove application.
Keywords
Axle Drive Shaft; Relief Groove; Finite Element Analysis; Strain-Life; Stress Concentration;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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