摘要
在结构有限元分析基础之上研究了模糊随机桁架的可靠性指标对设计变量的灵敏度问题。同时考虑结构参数和荷载的模糊随机性,在利用双因子法得出结构模糊随机响应及其模糊数字特征的基础之上,推导了结构的可靠性指标对设计变量的灵敏度。通过算例验证了该方法的可行性,得出了若干有意义的结论。
The sensitivity analysis of structural reliability of a fuzzy-random truss to variables designed is given on bansis of finite element analysis. Considering fuzzy-randomness of structural parameters and loads, the structural fuzzy-random responses and their fuzzy numerical characteristics are presented with the two-factor method, and the sensitivity of the structural reliabilistic index to variables designed is then derived. Finally, the feasibility of the method given is verified via an example, and some important conclusions are obtained.
出处
《振动与冲击》
EI
CSCD
北大核心
2008年第9期51-54,共4页
Journal of Vibration and Shock
基金
总装备部预研项目Y13406040101资助
关键词
模糊随机桁架
双因子法
有限元分析
可靠性指标
灵敏度
fuzzy-random truss
two-factor method
finite element analysis
reliability index
sensitivity
