文档介绍：J. Ocean Univ. China (Oceanic and Coastal Sea Research)
DOI -010-0043-7
ISSN 1672-5182, 2010 9 (1): 43-47
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E-mail:******@ouc.
Fatigue Life Assessment of Top Tensioned Risers
Under Vortex-Induced Vibrations
LI Xiaomin1), GUO Haiyan1), *, and MENG Fanshun2)
1) College of Engineering, Ocean University of China, Qingdao 266100, P. R. China
2) College of Marine Geo-science, Ocean University of China, Qingdao 266100, P. R. China
(Received June 22, 2009; revised July 28, 2009; accepted September 11, 2009)
© Ocean University of China, Science Press and Springer-Verlag Berlin Heidelberg 2010
Abstract The fatigue life of top tensioned risers under vortex-induced vibrations (VIVs) with consideration of the effect of inter-
nal flowing fluid on the riser is analyzed in the time domain. The long-term stress histories of the riser under VIVs are calculated and
the mean stresses, the number of stress cycles and amplitudes are determined by the rainflow counting method. The Palmgren-Miner
rule for cumulative damage theory with a specified S–N curve is used to estimate the fatigue life of the riser. The corresponding nu-
merical programs numerical simulation of vortex-induced vibrations (NSVIV) which can be used to calculate the VIV response and
fatigue life of the riser piled. Finally the influences of the riser’s parameters