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논문 상세정보

초기 잔류응력과 접촉표면 제거가 접촉피로수명에 미치는 영향

Effect of Metal Removal and Initial Residual Stress on Contact Fatigue Life

Abstract

Damage often occurs on the surface of railway wheel by wheel-rail contact fatigue. It should be removed before reaching wheel failure, because wheel failure can cause derailment with loss of life and property. The increase or decrease of the contact fatigue life by the metal removal of the contact surface were shown by many researchers, but it has not explained precisely why fatigue life increases or decreases. In this study, the effect of metal removal depth on the contact fatigue life for railway wheel has been evaluated by applying finite element analysis. It has been revealed that the residual stress and the plastic flow are the main factors determining the fatigue life. The railway wheel has the initial residual stress formed during the manufacturing process, and the residual stress is changed by thermal stress induced by braking. It has been found that the initial residual stress determines the amount of metal removal depth. Also, the effects of the initial residual stress and metal removal on the contact fatigue lift has been estimated, and an equation is proposed to decide the optimal metal removal depth for maximizing the contact fatigue life.

참고문헌 (13)

  1. Cannon, D. F. and Pradier, H., 1996, 'Rail Rolling Contact Fatigue Research by the European Rail Research Institute,' Wear 191, pp. 1-13 
  2. Bijak-Aochowski, M., 1997, 'Residual Stress in Some Elasto-Plastic Problems of Rolling Contact with Friction,' International Journal of Mechanical Science, Vol. 39, pp. 15-32 
  3. Kulkarni, S. M., 1991, 'Elasto-Plastic FE Analysis of Repeated Thee Dimensional, Elliptical Rolling Contact with Rail Wheel Properties,' Journal of Tribology, Vol. 113, pp. 434-441 
  4. Cretu, S. S. and Popinceanu, N. G., 1985, 'The Influence of Residual Stress Induced by Plastic Deformation on Rolling Contact Fatigue,' Wear 105, pp. 153-170 
  5. Fukui, T. and Matsuda, K., 1985, 'The Influence of Work Hardening on the Rolling Contact Fatigue Strength of the Strainless Steel,' Journal of Japan Society Lubrication Engineers. Vol. 30, No. 11, pp. 811-815 
  6. Ishida, M. and Abe, N., 1998, 'The Effect of Preventive Grinding on Rail Surface Shellings,' Quarterly Report of Railway Technical Research ?Institute, Vol. 39, No.3, pp. 136-141 
  7. Steele, R. K., 1991, 'The Effect Metal Removal, Steel Cleanliness and Wheel Load on the Fatigue Life of Rail,' Wear 144, pp. 71-87 
  8. Lee, R. T. and Chiou, Y. C., 1998, 'Effects of Pre-Rolling and Matal Removal on the Fatigue Life of Lubricated Rolling/Sliding Contact,' Wear 217, pp. 95-103 
  9. Jones, C. P., Tyfour, W. R., Beynon, J.H. and Kapoor, A., 1997, 'The Effect of Strain Hardening on Shakedown Limits of a Pearlitic Rail Steel,' Proc. Instn. Mech. Engrs., Vol. 211 Part F 
  10. Wang, C.H. and Liu, Q., 2002, 'Predictive Models for Small Fatigue Cracks Growing Through Residual Stress Fields,' 6th joint FAA/DoD/Nasa conference on aging aircraft 
  11. Seo, J. W., Goo, B. C., Choi, J. B. and Kim, Y. J., 2004, 'A Study on the Contact Fatigue Life Evaluation for Railway Wheels Considering Residual Stress Variation,' Transactions of the KSME A, Vol. 28, No.9, pp. 1391-1398 
  12. Kamaku, 1980, 'Rail,' Japan Railway Civil Engineering Association, pp. 126-131 
  13. Lee, J. H., Yang, W. H., Cho, M. R. and Sung, K. D., 1999, 'A Study on the Shape Optimization of S-Shape Wheel for Rolling Stock,' Transactions of the KSME A, Vol. 23, No. 12, pp.'2260-2266 

이 논문을 인용한 문헌 (1)

  1. Seo Jung-Won ; Hur Hun-Mu ; Choi Jae-Boong ; Kim Young-Jin 2005. "Effect of Metal Removal and Traction Force on Contact Fatigue Life" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. A. A, 29(10): 1384~1391 

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