| 结构可靠度的当量正态PFSORM算法 |
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| 引用本文： | 张新培,葛燕,董娜.结构可靠度的当量正态PFSORM算法[J].应用力学学报,2002,19(2):85-87. |
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| 作者姓名： | 张新培 葛燕 董娜 |
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| 作者单位： | 四川大学,成都,610065 |
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| 摘 要： | 对结构功能函数为相关非正态随机变量构成情况 ,使用PFSORM算法确定结构二次可靠指标须使用随机变量的条件分布函数及其反函数。工程实践中随机变量的条件分布函数及其反函数常不易确定。基于此 ,本文提出当量正态PFSORM算法 ,仅需要随机变量的分布函数、分布密度函数及其相关系数即可
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| 关 键 词： | 结构可靠度 当量正态 PFSORM算法 非正态相关随机变量 二次可靠指标 |
| 文章编号： | 1000-4939(2002)02-0085-03 |
| 修稿时间： | 2001年1月21日 |
A Point-Fitting SORM For Equivalent-Normal Random Variables |
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| Zhang Xinpei,Ge Yan,Dong Na.A Point-Fitting SORM For Equivalent-Normal Random Variables[J].Chinese Journal of Applied Mechanics,2002,19(2):85-87. |
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| Authors: | Zhang Xinpei Ge Yan Dong Na |
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| Abstract: | In the situation of structural performance function consisting of non normal dependent random variables, conditional probability distribution function of the variables and the inverse functions will be necessary for calculating structural second order reliability index by using Point Fitting SORM1]. But sometime in engineering practice , it may be difficult to get the condition probability distribution function and the inverse function. Thus, a Point Fitting SORM for equivalent normal random variables is put forward in this paper. By using the method, probability distribution functions, probability density functions and correlation coefficients will be only needed for calculating structural second order reliability index. |
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| Keywords: | Structural Reliability Non Normal Dependent Random Variables Equivalent Normal Random Variables Point Fitting SORM And Second Order Reliability Index |
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