摘要
本文利用信息熵的概念,将不确定性(模糊的、随机的)变量统一为随机变量,将模糊随机结构形式上视为随机结构进行处理,从而提出了不确定性结构有限元分析的一种新方法。当不确定结构转换的等效随机变量处于小扰动情况下,利用摄动法得到有限元递归方程组,解之可以得到响应量的均值和方差。
In this paper, a new finite element analysis method for fuzzy-stochastic structure was come up by using the information entropy concept. According to this method, the (fuzzy or random) variables can be transferred into random variables, so that the fuzzy-stochastic structure can be treated as random structures. When the random variables transferred from uncertainty structure are small, the perturbation finite element method can be used to obtain the mean values and the variances of the structural responses.
出处
《力学季刊》
CSCD
北大核心
2001年第3期340-345,共6页
Chinese Quarterly of Mechanics
