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Reliability Analysis in Fatigue Strength of Connecting Rod

커넥팅 로드의 피로강도에 대한 신뢰성 해석

Kim, Cheol-Su;Lee, Jun-Hyeong;Kim, Jeong-Gyu
김철수;이준형;김정규

  • Published : 2001.10.01

Abstract

It is necessary to evaluate fatigue strength and reliability of the connecting rod which is core part in automotive engine to assure the high level of durability of automobile. For this purpose, the loading conditions in automotive engine is obtained by the dynamic analysis. Based on these results, the critical section was identified by the finite element analysis. The fatigue strength under constant amplitude was evaluated and the mean of the fatigue limit at R = -2.27 derived from the staircase method was 311.2MPa. And the failure probability( F$\sub$p/ ) derived from the strength-stress interference model is 0.0003% at the 99.99% confidence level and the mean factor of safety was 4.2.

Keywords

Connecting clod;Staircase Test Method;Weibull Distribution;Strength-Stress Interference Model;Failure Probability;Mean Factor of Safety

References

  1. Abernethy, R. B., 1996, The New Weibull Handbook, 2nd Edition, SAE Professional Development, pp. 2-1~2-23
  2. Kececioglu D., 1993, Reliability and Life Testing Handbook, Prentice Hall (in USA), pp. 373-463
  3. Dai, S. H. and Wang, M. O., 1992, Reliability Analysis in Engineering Application, Chapman and Hall(in London), pp. 12-60
  4. 서호복, 1987, ' 신뢰성데이터의 해석법,' 자동차공학회지, Vol. 9, No. 3, pp. 23-35
  5. Eggert, R. J., 1994, 'Fatigue Life Simulation for Reliable Thick-Walled Cylinder Design,' Advanced in Design Automation, DE-Vol. 69-1, pp. 503-511
  6. Japan Society of Mechanical Engineers, 1994, Standard Method of Statistical Fatigue Testing, JSME S 002
  7. Murty, A. S. R., Gupta, U. C., Radha Krishna A., 1995, ' A New Approach to Fatigue Strength Distribution for Fatigue Reliability Evaluation,' Int. J. Fatigue, Vol. 17, No. 2, pp. 85-89 https://doi.org/10.1016/0142-1123(95)95886-L
  8. Spindle, J. E. and Haibach, E., 1981, 'Some Consideration in the Statistical Determination of the Shape of S-N Curves,' Statistical Analysis of Fatigue Data ASTM STP 744, pp. 89-113
  9. Lawrence, J. F., 1965, 'Connecting-Rod Fatigue Testing,' ASME Paper 65-OGP-3, pp. 1-9
  10. 조정환, 김재곤, 신동성, 1994, '중형디젤 엔진용 커넥팅 로드의 피로강도 평가,' The 8th Conference on Mechanical Behaviors of Materials, pp. 205-214
  11. Vanderplaats, G. N. and Miura, H., 1986, 'Trend in Structural Optimization Some Considerations in Using Standard Finite Element Software,' SAE technical paper series, No. 860801
  12. Kuch, I. and Kummerlen, P., 1991, 'Potential for Lightweight Design of a Hybrid Connecting Rod for Automobile Applications,' SAE technical paper series, No. 910424
  13. 오서환, 이장무, 1985, '디이젤 엔진의 연결봉 에 대한 응력해석,' 대한기계학회논문집, Vol. 9, No. 4, pp. 471-477
  14. 민동균, 김낙수, 전병희, 1995, '커넥팅 로드 소단부 파단의 해석,' 대한기계학회논문집, Vol. 19, No. 2, pp. 382-390
  15. 박찬희, 1994, 내연기관 컨넥팅로드 해석에 관한 연구, 한국과학기술원 학위논문
  16. Denman, H. M., 1991, 'Exact Solution for the Rigid Slider-Crank Mechanics with Gas Pressure,' Mech. Theory, Vol. 26, No. 4, pp. 415-420 https://doi.org/10.1016/0094-114X(91)90012-S
  17. Webster, W. D., Coflell, R. and Alfaro, D. 1983, 'A Three Dimensional Finite Element Analysis of a High Speed Diesel Engine Connecting Rod,' SAE technical paper series, No. 831322
  18. 조영갑, 1980, 'Connecting Rod 의 강도계산,' 대한기계학회지, Vol. 20, No. 6, pp. 442-447
  19. 박찬희, 김민수, 이귀영, 1993, ' 이중 최적화기법을 이용한 컨넥팅로드의 형상 최적설계,' 대한기계학회논문집, Vol. 17, No. 4, pp. 776- 785
  20. McNeill, W. A., 1998, 'Dynamic Analysis of Connecting Rod Bolts,' SAE technical paper series, No. 881287