文档介绍：第 37 卷第 2 期船海工程 V ol. 37 N o. 2
2008 年 4 月 SHIP & O CEA N ENG IN EER ING A pr. 2008
文章编号: 1671- 7953( 2008) 02- 0091- 04
波流联合作用下深海立管疲劳寿命计算方法研究
范佰明, 嵇春艳, 张强, 霍发力
( 江苏科技大学船舶与海洋工程学院, 江苏镇江 212003)
摘要: 基于线性波浪理论计算深水立管的动力响应, 采用谱分析法推导出传递函数。利用传递函数
由海浪谱确定海洋立管中由波流引起的应力谱, 给出深水立管在随机波浪和流作用下的疲劳寿命计算公
式, 以一典型立管为数值算例进行计算, 计算结果表明, 潮流对立管疲劳寿命也有影响, 使其疲劳寿命大大
降低。
关键词: 立管; 应力谱; 有限元模型; 疲劳寿命
中图分类号: T E851; T E952 文献标志码: A
Study on Calculation Method of Deep-sea Riserps Fatigue
L ife under W ave and bined Operations
FAN Ba-i ming, JI Chun-yan, ZHANG Qiang, HUO Fa-li
( Scho ol of naval architecture and ocean eng ineering , Jiangsu U niversity o f
Science and T echnolog y, Zhenjiang Jiangsu 212003, China)
Abstract: T he dy nam ic respo nse of t he deep- sea riser under w ave and current mot ion loads are calculated
by using the linear w ave theory, Based on t he spectrum analysis method, the T ransfer Funct ion is obtained.
U sing the T ransfer F unction and wav e spect rum, the cy clic st ress spect rum, caused by w ave and current fo rce
can be determined and the predicted fat igue life fo rmula can be obtained. Based on an ex ample, the fatig ue life
of the deep- sea riser can be affected by the current, and the fatig ue life of the deep- sea riserps base can be re-
duced rapidly because o f the big g er effect on the mo ment.
Key words: riser; stress spec