| 模糊可靠度隶属函数求解的迭代线抽样法 |
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| 引用本文： | 李璐祎,吕震宙. 模糊可靠度隶属函数求解的迭代线抽样法[J]. 工程力学, 2011, 0(5): 13-20 |
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| 作者姓名： | 李璐祎 吕震宙 |
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| 作者单位： | 西北工业大学航空学院; |
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| 基金项目： | 国家自然科学基金项目(NSFC10572117,50875213); 新世纪优秀人才支持计划项目(NCET-05-0868); 航空基础基金项目(2007ZA53012); 民口863计划项目(2007AA04Z401) |
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| 摘 要： | 针对同时存在随机基本变量和模糊基本变量的结构,提出了一种模糊可靠度隶属函数求解的迭代线抽样方法.所提方法首先求得给定隶属度水平下模糊基本变量的取值域.然后通过优化建模和迭代策略,求得使功能函数取最值的模糊基本变量取值点,并求得对应的缩减后的随机变量空间内功能函数的设计点.最后基于功能函数最值对应的模糊基本变量取值点及其...
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| 关 键 词： | 模糊可靠度 模糊基本变量 随机基本变量 隶属函数 线抽样方法 |
MEMBERSHIP FUNCTION OF FUZZY RELIABILITY ANALYSIS BY ITERATION BASED LINE SAMPLING |
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| LI Lu-yi,LU Zhen-zhou. MEMBERSHIP FUNCTION OF FUZZY RELIABILITY ANALYSIS BY ITERATION BASED LINE SAMPLING[J]. Engineering Mechanics, 2011, 0(5): 13-20 |
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| Authors: | LI Lu-yi LU Zhen-zhou |
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| Affiliation: | LI Lu-yi,LU Zhen-zhou(School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China) |
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| Abstract: | For structures with random variables as well as fuzzy variables,a new iteration method based Line Sampling(LS) is presented for obtaining the membership function of fuzzy reliability.The value domain of the fuzzy variables is firstly obtained by means of the given membership level.Then the values of the fuzzy variables which make the performance function take extreme values are obtained by optimization modeling and iterating strategy,and the corresponding design points of the performance function in the red... |
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| Keywords: | fuzzy reliability fuzzy variable random variable membership function line sampling |
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