摘要
针对FPSO单点区域复杂的载荷情况,提出一种单点结构在受到环境载荷和FPSO船体载荷作用下的疲劳计算分析方法,根据单点所受载荷的长期分布数据及各种载荷对应的载荷应力比,在线性假设的前提下,通过长期分布累加法对单点或船体结构进行疲劳累计损伤计算,最后得出疲劳结果,该方法不仅适用于单点及界面附近船体结构疲劳计算,也适用于多点系泊系统等界面载荷长期分布复杂的局部船体结构疲劳计算。
A fatigue calculation method was introduced for single mooring system under the combined influence of environmental loads and FPSO hull girder loads. Based on long term distribution and load-stress ratios of all loads, in the premise of linear addition, the fatigue calculation was performed by long term distribution addition of cumulative fatigue damage. This method can be applied for not only the fatigue calculation of single mooring system and hull structure around interface but also hull local structure of multi-point mooring system with complex long term distribution of loads.
作者
钱笠君
荆海东
高宝坤
王醍
QIAN Li-jun;JING Hai-dong;GAO Bao-kun;WANG Ti(Marine Design & Research Institute of China, Shanghai 200011, China)
出处
《船海工程》
北大核心
2019年第4期107-111,116,共6页
Ship & Ocean Engineering
关键词
FPSO
单点
长期分布
疲劳
FPSO
inner turret single mooring system
long term distribution addition
fatigue
