Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Fatigue Strength of Fillet Weldment under Out-of-plane Bending Load

필릿 용접부의 면외굽힘하중에 대한 피로강도

  • 강성원 (부산대학교 조선해양공학과) ;
  • 한상혁 (부산대학교 조선해양공학과) ;
  • 김화수 (현대중공업(주) 구조설계부) ;
  • 백영민 (현대중공업(주) 구조설계부)
  • Published : 2003.02.01
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Abstract

Fatigue tests of transverse fillet weldment were performed under out-of-plane bending loads. Significant increase of the fatigue strength was observed under out-of-plane bending loads, compared to the one under in-plane loads (axial loads). Applicability of the crack propagation analysis using LEFM for the surface crack of fillet weldment were investigated as well, in parallel with the fatigue tests. For the rational assessment of the fatigue strength of welded ship structures where combined stresses of the in-plane axial stress and the out-of-plane bending stress are induced simultaneously due to complexity of applied load and structural geometry, further investigation is recommended for the effect of the out-of-plane bending stress on the fatigue strength of weldment.

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References

  1. 강성원, 김영욱, 김화수, 김도현 1999 '용접잔류 응력이 Padding plate 용접구조의 피로강도에 미치는 영향', 대한조선학회 춘계 학술대회 논문집, pp. 422-425.
  2. 김재동, 이종원, 홍창호 1996 '복수표면균열을 갖는 구조요소의 피로수명 예측', 대한조선학회 논문집, 제33권 제4호, pp. 75-86.
  3. 한문식, 김재동, 이호섭 1991 '유한평판 및 T-joint 필릿 용접부에 있어서 3차원 표면 균열의 피로 파괴 거동에 관한 실험적 연구', 대한조선학회 논문집, 제28권 제2호, pp. 275-284.
  4. Fricke, W. 2001 'Recommended Hot Spot Analysis Procedure for Structural Details of FPSOs and Ships Based on Round-Robin FE Analysis', Proceeding of the Eleventh International Offshore and Polar Engineering Conference, Stavanger Norway, June 17-22, pp. 89-96.
  5. Lotsberg, I. 2001 'Overview of the FPSO -Fatigue Capacity JIP', Proceeding of the 18th International Conference on Offshore Mechanics and Arctic Engineering, MAE01/MAT-3010, Rio de Janeiro Brazil, June 3-8.
  6. Machida, S., Yoshinari, H., Matoba, M., Nishimura, R., 1992 'Definition of Hot Spot Stress in Welded Structure for Fatigue Assessment (3rd Report FEM)', J. of SNAJ, Vol. 171, pp. 477-484.
  7. Newman, J. C., Raju, I. S. 1981 'An Emprical Stress-Intensity Factor Equation for the Surface Crack', Engineering Fracture Mechanics, Vol. 15, No. 1-2, pp. 185-192. https://doi.org/10.1016/0013-7944(81)90116-8

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