Hybrid Reliability Analysis of Structures Based on Taylor Expansion Method

被引：0
|
作者：
Meng G.-W. [1 ]
Wei T.-H. [1 ]
Zhou L.-M. [1 ]
Li F. [1 ]
机构：
[1] School of Mechanical and Aerospace Engineering, Jilin University, Changchun, 130025, Jilin
来源：
Li, Feng (fengli@jlu.edu.cn) | 2018年 / China Ordnance Industry Corporation卷 / 39期
关键词：
Dimensionality reduction algorithm; Fourth-order moment; Interval variable; Structural reliability analysis; Taylor expansion model;
D O I：
10.3969/j.issn.1000-1093.2018.07.019
中图分类号：
学科分类号：
摘要：
A new reliability analysis method is proposed forhybrid uncertainty with both random variables and interval variables. The expression of the upper and lower bounds of structural function is obtained based on the Taylor expansion. By means of the dimensionality reduction method, the structural function is approximated as the sum of n one-dimensional variable functions. The fourth-order central moments of limit state function of structure are derived by utilizing the Taylor expansion. The upper and lower bounds of structural failure probability are obtained by using the fourth-order moment method. In the method, the distribution of random variables is not required, and the most probable failure point of iteration needs not to be solved. Several examples demonstrate that the proposed method has higher calculation accuracy and efficiency. © 2018, Editorial Board of Acta Armamentarii. All right reserved.
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页码：1404 / 1410
页数：6
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