API 2W Gr.50 강재를 이용한 해양구조물 Tendon Porch의 피로성능 평가

Assessment of Fatigue Strength Characteristics of Tendon Porch in Offshore Platforms for API 2W Gr. 50 Steel

  • Im, Sung-Woo (Research Institute of Industrial Science and Technology) ;
  • Lee, Joo-Sung (School of Naval Architecture & Ocean Engineering, University of Ulsan)
  • 발행 : 2006.10.31

초록

This assessment is concerned with the fatigue strength of the tendon porch found in TLP. Lorge-scale fatigue tests with models constructed at 30% the size of the real structures have been carried out to investigate the fatigue behavior of the API 2W Grade 50 steel recently produced by POSCO. The fatigue life for the present test models was obtained based on the concept of nominal stress. A comparison of the present test results with those obtained by a numerical approach based on the structural analysis results has showngood agreement. The present results were also compared with the design curves in DnV RP-C203.

키워드

참고문헌

  1. 임성우, 장인화, 조철희, 박관규 (2005). 'API 2W Gr.50 강재를 이용한 대형 Tubular Joint 피로성능평가', 한국해양공학회지, 제19권, 제3호 pp 54-58
  2. 임성우, 장인화, 조철희, 박관규 (2006). 'API 2W Gr.50 강재를 이용한 대형 Topside Joint 피로성능평가', 2006년도 한국 해양과학기술협의회 공동학술대회, 한국해양공학회, pp 1752-1756
  3. Cook, R.D., Malkus, D.S., Plesha, M.E. and Witt, R.J. (2002). 'Concepts and Applications of Finite Element Analysis', 4th edition, John Wiley & Sons, Inc
  4. DnV(2001). 'DnV OS-C103 : Structural Design of TLPs'
  5. DnV(2001). 'DnV RP-C203 : Fatigue Strength Analysis of Offshore Steel Structures'
  6. Im, S.W. (2005). 'A Prospective of Offshore Structure and Fatigue Tests of Large-Scale Structures ', Proceedings of 14th Steel Usage Technology Conference, POSCO, pp 221-232
  7. Im, S.W., Chang, I.H., Park, K.K., Jo, C.H. and Kim, K.Y. (2005). 'A Study on the Fatigue Crack in Large-Scale Tubular Joints for Offshore Structures', Proceedings of 5th lSOPE Conference, pp 341-345
  8. Pytel, A. and Kiusalaas, J. (2003). 'Mechanics of Materials', Brooks/Cole-Thomson Learning, Inc