Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

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

보조동력장치 엔진 Base의 피로수명 예측 및 충격파손에 관한 연구

  • 이상범 (경상대학교 대학원 기계공학과) ;
  • 정경택 (경상대학교 기계항공공학부) ;
  • 신재호 (경상대학교 대학원 기계공학과) ;
  • 장환영 (경상대학교 대학원 기계공학과) ;
  • 서정세 (경상대학교 기계공학과)
  • Published : 2008.04.01
Download PDF
⟨ Previous Next ⟩

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

References

  1. Ichiro, M., "The Influence of Stress Wave on the Impact Fracture Strength of Cracked Member," International Journal of Impact Engineering, Vol. 32, Issues 1-4, pp. 351-357, 2005 https://doi.org/10.1016/j.ijimpeng.2004.11.004
  2. Lee, Y. S., Choi, C. J., Byoung, H. and Oh, J. M., "A Structural Analysis of the Tracked Vehicle," Journal of the Computational Structural Engineering Institute of Korea, Vol. 10, No. 3, pp. 145-155, 1997
  3. Lee, J. H., "Fatigue Analysis Technique Under Impact Load," Journal of the Computational Structural Engineering Institute of Korea, Vol. 10, No. 3, pp. 39-45, 1997
  4. Hwang, G. W. and Cho, K. Z., "Dynamic Stress Analysis on Impact Load in 2-Dimensional Plate," Journal of the Computational Structural Engineering Institute of Korea, Vol. 8, No. 1, pp. 137-146, 1995
  5. Julie, A. B., Jess, J. C. and James, L. H., "Fundamentals of Metal Fatigue Analysis," University of Illinois at Urbana-Champaign, pp. 8-33, 1987
  6. ANSYS, Inc., "Calculating and Displaying Fatigue Results," ANSYS, Inc., pp. 22-32, 2006
  7. United States of America Army Department of Defense Test Method Standard "Environmental Engineering Considerations and Laboratory Tests," MIL-STD-810F, pp. 516.5-1-516.5-38, 2000
  8. Lee, O. S. and Kim, S. G., "Prediction of Fatigue Crack Propagation Life under Constant Amplitude and Overloading Condition," Journal of the KSPE, Vol. 15, No. 10, pp. 113-119, 1998
  9. Song, S. H., Ahn, I. H. and Lee, J. M., "Behavioral Characteristics of Fatigue Cracks in Small Hole Defects Located on Opposite Sides of the Shaft Cross Section," International Journal of Precision Engineering and Manufacturing, Vol. 5, No. 4, pp. 36-42, 2004