哈尔滨工程大学学报2018，Vol.39Issue(4)：664-667,4.DOI:10.11990/jheu.201612092
船体结构疲劳可靠性分析的直接计算方法
Direct calculation approach for fatigue reliability analysis of ship structures
摘要
Abstract
To accurately predict the fatigue life of a ship structure,3D linear potential flow theory and a direct cal-culation method based on the spectral analysis used for the finite element analysis of an entire ship were adopted. The stress parameters of short-term and long-term sea states were obtained, and the cumulative fatigue damage of the ship during its entire life period was given.The uncertainties involved in fatigue analysis were considered;the reliability index of the hull structure was obtained,and the fatigue reliability analysis of the ship structure was pres-ented based on direct calculation.In this study,the fatigue reliability of a high-performance trimaran was analyzed. The results of this analysis reveal that the fatigue life reliability increases with an increase in the fatigue life,and it is low in areas with serious fatigue.关键词
直接计算/疲劳可靠性/谱分析法/船体结构/三维势流理论/整船有限元分析/应力参数Key words
direct calculation/fatigue reliability/spectral analysis method/ship structure/3D linear potential flow theory/finite element analysis of an entire ship/stress parameters分类
交通工程引用本文复制引用
甄春博,王天霖,于鹏垚..船体结构疲劳可靠性分析的直接计算方法[J].哈尔滨工程大学学报,2018,39(4):664-667,4.基金项目
国家重点研发计划重点专项(2016YFC0301500) （2016YFC0301500）
国家自然科学基金项目(51379025,51609031) （51379025,51609031）
海洋工程国家重点实验室开放基金项目(1513) （1513）
中央高校基本科研业务费专项资金项目(3132016346) （3132016346）
辽宁省博士启动基金项目(201601070). （201601070）
