摘要
本文将拉丁超立方抽样法与条件期望和对偶变数方差减缩技术组合用于分析船体总纵极限强度可靠性。在一系列不同的极限状态函数条件下 ,对随机抽样法和拉丁超立方抽样法以及是否使用方差减缩技术进行了比较研究。使用组合方法获得了稳定的结果和较大的方差减缩。最后 ,基于极限强度 。
This paper proposes Latin hypercube sampling combined with variance reduction techniques of conditional expectation and antithetic variates to assess ultimate strength reliability of ship hull girder.Comparative study on random sampling and Latin hypercube sampling with and without variance reduction techniques is carried out to a number of different limit state functions.Stable results and high variance reduction using the compound method have been obtained.Then,the compound method is used to assess the hull girder ultimate strength reliability of a bulk carrier subjected to extreme bending moments.
出处
《船舶力学》
EI
2002年第3期52-61,共10页
Journal of Ship Mechanics
