华中科技大学学报（自然科学版）Issue(6)：58-62,5.DOI:10.13245/j.hust.140612
船体结构屈服强度可靠性分析
Reliability analysis of yielding strength of ship structures
摘要
Abstract
Through the time domain simulation of the short term sea state and the direct calculation of the ship structural stress ,the Mises stress response history of the structural elements were calculat-ed ,and the distribution of the Mises stress of the structural elements in the short term sea state were obtained .The long term distribution of the Mises stress was computed and the extreme value distribu-tion was achieved by using the series stochastic theory .In view of the uncertainties of the yielding strength of the material and the model ,the limit state function for the reliability analysis of the yield-ing strength was established .A reliability analysis method for the ship structural yielding strength was given based on the Mises stress .The example shows that the short term distribution of the Mises stress obeys the Weibull distribution ,and the extreme value distribution achieved by using the series stochastic theory obeys the log-normal distribution .关键词
船体结构/屈服强度/可靠性/米泽斯应力/直接计算Key words
ship structures/yielding strength/reliability analysis/Mises stress/direct calculation分类
交通工程引用本文复制引用
冯国庆,邓进宁,任慧龙,张楷弘..船体结构屈服强度可靠性分析[J].华中科技大学学报（自然科学版）,2014,(6):58-62,5.基金项目
国家自然科学基金资助项目（51279034）． （）
