EI、Scopus 收录
中文核心期刊

一种考虑相关性的概率-区间混合不确定模型及结构可靠性分析

A PROBABILITY AND INTERVAL HYBRID STRUCTURAL RELIABILITY ANALYSIS METHOD CONSIDERING PARAMETERS’ CORRELATION

  • 摘要: 提出了一种考虑相关性的概率-区间混合不确定性模型及结构可靠性分析方法,能够处理变量之间具有相关性的混合可靠性分析问题. 分别针对概率变量,概率区间变量及区间变量定义了相关角的概念,用以定量描述变量之间的相关性;通过仿射坐标,将相关变量转换为独立变量;给出了其可靠性分析模型,并构建了一高效求解方法获得其可靠性指标和失效概率区间;最后通过分析两个数值算例,验证了方法的有效性.

     

    Abstract: This paper proposes a mixed probability-interval uncertainty model considering correlation and a structural reliability analysis method which can solve problems of relevant variables. First, relevant angles of probability variables, probability-interval variables and interval variables are defined respectively in order to quantitatively describe the correlation between variables. Then through affine coordinates relevant variables are transformed into independent variables. A reliability analysis model is put forward, and a highly efficient method is built to solve the reliability index and failure probability interval. Finally two numerical examples are provided to verify the validity of the method.

     

/

返回文章
返回