摘要
以某座Spar平台的单根锚泊线为对象进行疲劳性能研究,采用钢链-钢索-钢链三段组成的悬链式锚泊线.基于非线性有限元方法计算锚泊线的动力响应.选取锚泊线上端钢链与上部结构、钢索与钢链的链接点,采用雨流计数法对其应力时程曲线计数得到各短期海况下的疲劳荷载谱.根据Miner线性累计损伤理论,分别得到三个危险链接点在长期海况下的疲劳损伤,对锚泊线的疲劳性能进行评估.
Take the representative single mooring line of a Spar platform as the fatigue research object,Fatigue Property Assessment of Deep Water Catenary Moorings ZHENG Chang-xin1,ZHAI Gang-jun1,QIAO Dong-sheng2 and the mooring line are made up of chain-wire-chain.The response of the mooring line is calculated under nonlinear finite element method.The stress time histories of the three connecting links between the top of chain and topside,chain and wire on the mooring line in each short-term sea state are calculated,and then the rain flow counting method is employed to obtain the fatigue load spectrum in each short-term sea state.The Miner linear cumulative rule is used to compare the fatigue damage of the three connecting links in long-term sea state,and the fatigue of mooring line is evaluated.
出处
《船舶工程》
CSCD
北大核心
2010年第6期48-52,共5页
Ship Engineering
基金
国家863计划项目(2006AA09A103)
关键词
锚泊线
悬链式系泊系统
疲劳损伤
动力响应
mooring line
catenary mooring system
fatigue damage
dynamic response
