RESEARCH PAPERS: Offshore Mechanics

Probabilistic Pseudo-Static Analysis of Risers

[+] Author and Article Information
Suhail Ahmad

Department of Applied Mechanics, Indian Institute of Technology, New Delhi, India

T. K. Datta

Department of Civil Engineering, Indian Institute of Technology, New Delhi, India

J. Offshore Mech. Arct. Eng 112(1), 58-64 (Feb 01, 1990) (7 pages) doi:10.1115/1.2919836 History: Received January 01, 1988; Revised March 16, 1989


Under many sea states, the marine risers behave in a quasi-static manner. The statistics of the response of the marine risers to random sea states producing quasi-static loading is determined using the spectral description of the sea states. The analysis procedure is similar to that proposed by Burrows [2] for offshore structures. The distribution of the response obtained by the proposed method is compared with those derived from the simulation studies in which ensemble of response time histories is computed from artificially generated histories of water particle kinematics for a given sea state. The results of the study indicate that the distribution of the quasi-static response can be adequately modeled by Pierson-Holmes [4] distribution.

Copyright © 1990 by The American Society of Mechanical Engineers
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