DOI QR코드

DOI QR Code

되풀이 균열 선단 열림 변위를 이용한 피로 균열 열림 거동 예측을 위한 유한 요소 해석

Finite Element Analysis for the Prediction of Fatigue Crack Opening Behavior Using Cyclic Crack Tip Opening Displacement

  • 최현창 (동명대학교 메카트로닉스공학과)
  • 발행 : 2006.11.01

초록

The relationship between fatigue crack growth behavior and cyclic crack tip opening displacement is studied. An elastic-plastic finite element analysis (FEA) is performed to examine the growth behavior of fatigue crack, where the contact elements are used in the mesh of the crack tip area. We investigate the relationship between the reversed plastic zone size and the changes of the cyclic crack tip opening displacement along the crack growth. We investigate the effect of the element size when predict fatigue crack opening behavior using the cyclic crack tip opening displacement obtained from FEA. The cyclic crack tip opening displacement is related to fatigue crack opening behavior.

키워드

참고문헌

  1. Choi, H. C. and Song, J. H., 'Finite Element Analysis of Closure Behaviour of Fatigue Cracks in Residual Stress Fields,' Fatigue Fract. Engng Mater. Struct., Vol. 18(1), 1995, pp. 105-117 https://doi.org/10.1111/j.1460-2695.1995.tb00145.x
  2. Choi, H. C. 1994, 'Finite Element Analysis of Closure Behaviour of Fatigue Cracks in Residual Stress Fields,' Ph. D. dissertation, Korea Advanced Institute of Science and Technology
  3. Park, S. J., Earmme, Y. Y. and Song, J. H., 1997, 'Determination of the most Appropriate Mesh Size for a 2-d Finite Element Analysis of Fatigue Crack Closure Behaviour,' Fatigue Fract. Engng. Mater. Struct., Vol. 20(4), pp. 533-545 https://doi.org/10.1111/j.1460-2695.1997.tb00285.x
  4. Choi, H. C., 2000, 'A Study on the Determination of Closing Level for Finite Element Analysis of Fatigue Crack Closure,' KSME International Journal, Vol. 14(4), pp. 401-407 https://doi.org/10.1007/BF03186433
  5. Choi, H. C., 2003, 'Finite Element Analysis for Fatigue Crack Closure Behavior Using Reversed Plastic Zone Size,' Journal of KSME(A), Vol. 27(10), pp.1703-1711 https://doi.org/10.3795/KSME-A.2003.27.10.1703
  6. Choi, H. C., 2004, 'Numerical Analysis for Prediction of Fatigue Crack Opening Level,' KSME International Journal, Vol. 18(11), pp. 1991-1997 https://doi.org/10.1007/BF02990441
  7. Choi, H. C., 2005, 'An Evaluation on the Effect of Reversed Plastic Zone on the Fatigue Crack Opening Behavior Under 2-D Plane Stress,' Journal of KSME(A), Vol. 29(8), pp. 1078-1084 https://doi.org/10.3795/KSME-A.2005.29.8.1078
  8. Choi, H. C., 2005, 'A Study on Relationship Between Fatigue Crack Opening Behavior and Reversed Plastic Zone Size,' Key Engineering Materials, Vol. 297-300, pp.66-71 https://doi.org/10.4028/www.scientific.net/KEM.297-300.66
  9. Kurihara, M., Katoh, A. and Kawahara, M.,1987, 'Effective of Stress Ratio and Step Loading on Fatigue Crack Propagation Rate,' Current Research on Fatigue, Tanaka, T., Jono, M. and Komai, K., Eds., Elsevier Applied Science, pp. 247-265
  10. Kim, C. Y., 1993, 'Fatigue Crack Closure and Growth Behavior under Random Loading,' Ph. D. dissertation, Korea Advanced Institute of Science and Technology