International Journal of Automotive Technology

  • 제6권3호
  • /
  • Pages.293-303
  • /
  • 2005
  • /
  • 1229-9138(pISSN)
  • /
  • 1976-3832(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

EFFECTS OF INTERFACE CRACKS EMANATING FROM A CIRCULAR HOLE ON STRESS INTENSITY FACTORS IN BONDED DISSIMILAR MATERIALS

  • CHUNG N.-Y. (Department of Mechanical Engineering, Soongsil University) ;
  • SONG C.-H (AMLCD Division, Samsung Electronics Co., Ltd.)
  • 발행 : 2005.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Bonded dissimilar materials are being increasingly used in automobiles, aircraft, rolling stocks, electronic devices and engineering structures. Bonded dissimilar materials have several material advantages over homogeneous materials such as high strength, high reliability, light weight and vibration reduction. Due to their increased use it is necessary to understand how these materials behave under stress conditions. One important area is the analysis of the stress intensity factors for interface cracks emanating from circular holes in bonded dissimilar materials. In this study, the bonded scarf joint is selected for analysis using a model which has comprehensive mixed-mode components. The stress intensity factors were determined by using the boundary element method (BEM) on the interface cracks. Variations of scarf angles and crack lengths emanating from a centered circular hole and an edged semicircular hole in the Al/Epoxy bonded scarf joints of dissimilar materials are computed. From these results, the stress intensity factor calculations are verified. In addition, the relationship between scarf angle variation and the effect by crack length and holes are discussed.

키워드

참고문헌

  1. Bowie, O. L. (1956). Analysis of an finite plate containing radial cracks originating at the boundary of an infinite circular hole. J Math. Phys., 35, 60-71 https://doi.org/10.1002/sapm195635160
  2. Bowie, O. L. (1973). Soultion of Plane Crack Problems by Mapping Technique. Mechanics of Fracture (Ed. Sih G. C.). NoordhoffIntemational Publishing Leyden, 1,1-55
  3. Chung, N. Y. (2002). Evaluation method of interface strength in bonded dissimilar materials of Al/Epoxy, Korea Society of Mechanical Engineers(A) 26, 11, 2277-2286 https://doi.org/10.3795/KSME-A.2002.26.11.2277
  4. Chung, N. Y. and Jang, J. M. (1997). Fracture criterion of mixed mode in adhesively bonded joints of Al/Steel dissimilar materials. Korea Society of Mechanical Engineers(A) 21, 8, 1322-1331
  5. Chung, N. Y. and Park, S. I. (2004). Detection of interfacial crack length by ultrasonic attenuation coefficients on adhesively bonded joints. Int. J Automotive Technology 5,4,303-309
  6. Chung, N. Y. and Song, C. H. (1996). Prediction of propagation path for the interface crack in bonded dissimilar materials. Trans. Korean Society of Automotive Engineers 4, 3, 112-121
  7. Chung, N. Y., Lee, M. D. and Kang, S. K. (2000). Analyses of stress intensity factors and evaluation of fracture toughness in adhesively bonded DCB joints. Korea Society of Mechanical Engineers(A) 24, 6, 1547-1556
  8. Comninou, M. (1977). Interface crack with friction in contact zone. J Appl. Mech., 44, 780-781 https://doi.org/10.1115/1.3424179
  9. Comninou, M. (1977). The interface crack. J Appl. Mech., 44, 631-636 https://doi.org/10.1115/1.3424148
  10. England, F. (1965). Stress distribution in bonded dissimilar materials with cracks. J Appl. Mech., 32, 403-410 https://doi.org/10.1115/1.3625814
  11. Erdogan, F. (1965). Stress distribution in bonded dissimilar media. J Appl. Mech., 32, 403-410 https://doi.org/10.1115/1.3625814
  12. Erdogan, F. and Sih, G. C. (1963). On the crack extension in plate under plane loading and transverse shear. J Basic Eng. Trans. 85, 519-527 https://doi.org/10.1115/1.3656897
  13. Groth, H. (1967). Some problems of bonded anisotropic plate with cracks along the bond. Int. J Frac. Mech. 3, 253-265
  14. He, M. Y. and Hutchinson, J. W. (1989). Kingking of a crack out of an interface. J Appl. Mech., 56,270-278 https://doi.org/10.1115/1.3176078
  15. Isida, M. and Noguchi, H. (1984). Tension of a plate containing an embedded elliptical crack. Eng. Frac. Mech., 20,3, 387-408 https://doi.org/10.1016/0013-7944(84)90046-8
  16. Kane, J. H. (1994). Boundary element analysis in engineering continuum mechanics. Prentice-Hall, Inc. 161-167, New Jersy
  17. Kuo, A. S., Saul, S. and Levy, M. (1983). Stress intensity factors for two cracks emanating from two holes and approaching each other. Eng. Frac. Mech., 17,3,281-288 https://doi.org/10.1016/0013-7944(83)90034-6
  18. Mukai, D. J., Ballarini, R. and Miller, G. R. (1990). Analysis of branched interface cracks. J Appl. Mech., 57, 887-893 https://doi.org/10.1115/1.2897657
  19. Murakami, Y. and Nasser, S. N. (1982). Interacting dissimilar semi-elliptical surface flaws under tension and bending. Eng. Frac. Mech., 16,3,373-386 https://doi.org/10.1016/0013-7944(82)90115-1
  20. Newman, J. C. (1971). An improved method of collocation for the stress analysis of cracked plate with various shaped boundaries. NASA TA D-6373
  21. Raju, I. S. (1987). Calculation of strain-energy release rates with higher order and singular finite elements. Eng. Frac. Mech., 28, 3, 251-274 https://doi.org/10.1016/0013-7944(87)90220-7
  22. Rice, J. R. (1988). Elastic fracture mechanics concepts for interfacial cracks. J Appl. Mech., 55, 98-103 https://doi.org/10.1115/1.3173668
  23. Rice, J. R. and Sih, G. C. (1965). Plane problems of cracks in dissimilar media. J Appl. Mech., 3, 418-423
  24. Salama, M. and Hasebe, N. (1996). Stress concentration factors at an elliptical hole on the interface between bonded dissimilar half-plane under bending moment. J Appl. Mech., 63, 7-14 https://doi.org/10.1115/1.2787213
  25. Williams, M. L. (1959). The stresses around a fault or crack in dissimilar media. Bull. Seismol. Soc. America. 49, 199-204
  26. Woo, C. W., Wang, Y. H. and Cheung, Y. K. (1989). The mixed mode problems for the cracks emanating from a circular hole in a finite plate. Eng. Frac. Mech., 32, 2, 279-288 https://doi.org/10.1016/0013-7944(89)90300-7
  27. Yuuki, R. and Cho, S. B. (1989). Efficient boundary element analysis of stress intensity factors for interface cracks in dissimilar materials. Eng. Frac. Mech., 34, 1, 179-188 https://doi.org/10.1016/0013-7944(89)90251-8