结构模糊灵敏度分析  

Fuzzy Sensitivity Analysis of Structures

作　　者：吕恩琳[1] 吕玺琳[1] 

机构地区：[1]重庆大学工程力学系,重庆400030

出　　处：《重庆大学学报（自然科学版）》2005年第6期102-105,共4页Journal of Chongqing University

摘　　要：研究了当设计变量具有模糊性时,工程结构灵敏度的计算方法.在结构灵敏度分析的传统方法,即拟载荷法、虚荷载法基础上,利用模糊扩展原理、模糊分解定理及L-R型模糊函数求导法则,推导出了一种计算结构模糊位移灵敏度和模糊应力灵敏度的计算方法.算例表明所给方法是正确的和有效的.Based on fuzzy sets theory, a kind of method for analyzing the sensitivity in engineering structures of which design parameters are fuzzy variables is presented. The structural response sensitivity is analyzed by means of 'simulate load' method and 'virtual load' method, and a formula for calculating the fuzzy displacement sensitivity and fuzzy stress sensitivity is developed. The example shows that the presented method is rational and efficient.

关 键 词：工程结构 模糊集 灵敏度分析 

分 类 号：O159[理学—数学]