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Study of Nonlinear Dynamic Behavior of a Typical Jacket Type Platform Under Environmental Loading (Wave and Current) and Blast Overpressure

[+] Author Affiliations
M. Dousti, A. R. M. Gharabaghi, M. R. Chenaghlou

Sahand University of Technology, Tabriz, Iran

Paper No. OMAE2004-51502, pp. 901-909; 9 pages
doi:10.1115/OMAE2004-51502
From:
  • ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
  • 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B
  • Vancouver, British Columbia, Canada, June 20–25, 2004
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3743-2 | eISBN: 0-7918-3738-6
  • Copyright © 2004 by ASME

abstract

In this paper the behavior of a jacket platform, which is installed in Persian Gulf under blast overpressure, is evaluated and interaction between blast and operating environmental wave and current loads is studied. Using finite element software the whole parts of platform, which include topside and jacket sections are modeled. The real pressure of blast load is applied for conducting the analyses. The study involves elastic and elasto-plastic analyses, which in the last one (elasto-plastic) the geometry and material nonlinearity have been considered. In the studied platform the results show that the interaction between blast and operating environmental wave and current loads is negligible but the comparison between two models, the one in which the whole parts of platform are modeled and the other one which only topside is modeled indicates that there are appreciable differences between the axial plastic strains.

Copyright © 2004 by ASME
Topics: Waves

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