摘要
建立了在基本随机变量的联合概率密度未知的情况下随机结构可靠性分析的随机有限元法,阐述了受有随机载荷的多随机参数结构的失败概率的计算方法,应用已知的基本随机变量的前两阶矩和边缘概率分布函数对随机结构的可靠性进行了分析。
In this paper, the stochastic finite element method for reliability analysis of random structures under unavailable joint probability density functions of basic random variables is presented. The failure probability of structures including the random parameter vector under random loads is formulated. Available first two moments and marginal distributions are employed to analyze the structural reliability.
基金
国家教委博士点基金
吉林省青年科学技术基金资助项目
关键词
随机有限元
结构可靠性
随机结构
incomplete probability imformation . random parameter vector ,stochastic fi- nite element method ,failure probability
