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A Study on Prediction of Fatigue Life and Shock Fracture for the Engine Base of Auxiliary Power Unit for Tracked Vehicle  

Lee, Sang-Bum (경상대학교 대학원 기계공학과)
Chung, Kyung-Taek (경상대학교 기계항공공학부)
Shin, Jae-Ho (경상대학교 대학원 기계공학과)
Jang, Hwan-Young (경상대학교 대학원 기계공학과)
Suh, Jeong-Se (경상대학교 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.25, no.4, 2008 , pp. 86-92 More about this Journal
Abstract
This paper is to investigate the behavior of linear static structure stress, the fatigue and experimental shock fracture far engine base in the Auxiliary Power Unit to resolve its restricted electrical power problem. The shock fracture test was experimentally made under MIL standard criteria. The numerical results by finite element method had a good agreement with those from the shock test. The design data of predicting the fracture at the initial crack and the damage behavior of structure with shock and vibration load in the battle field can be obtained from shock test. In the functional shock test, the crack at the side parts of the engine base was found at peak acceleration of 40g.
Keywords
Fatigue life; Shock crack; Tracked vehicle; Engine base; Auxiliary power unit;
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