计算力学学报Issue(5)：578-583,6.DOI:10.7511/jslx201405006
平稳随机激励下耦合 New mark 滑移系统的可靠性分析
Dynamic reliability analysis of the coupled Newmark sliding system under stationary random excitation
摘要
Abstract
Based on a discrete representation of the input random process ,the dynamic reliability of a cou-pled Newmark sliding system under stationary excitation is investigated analytically .When the initial sliding of the system induced by stationary excitation is considered ,the limit-state function can be ex-pressed as an explicit linear function of n standard normal random variables ,and the theoretical solution of reliability index can be obtained .If sliding more than a certain amount of relative displacement is con-sidered as the failure criterion of the system ,the limit-state function is expressed as an explicit nonlinear function of n standard normal random variables ,and an approximate solution can be gained by using the static reliability methods .Examples show the design point excitation resulting in the initial relative sliding of the system is a harmonic wave with increasing amplitude ,and its frequency is equal to the one of the system .T here are nonlinear relations betw een probability values of failure for the system sliding more than a certain displacement and coefficients of friction of the system ,and the optimal coefficient of friction which makes the minimum probability of failure can be found .关键词
动力可靠度/地震永久位移/滑动位移/随机振动Key words
dynamic reliability/earthquake permanent displacement/sliding displacement/random vibra-tion分类
数理科学引用本文复制引用
邓学晶,林倩,亓玉成,邹德高..平稳随机激励下耦合 New mark 滑移系统的可靠性分析[J].计算力学学报,2014,(5):578-583,6.基金项目
地震行业科研专项经费（201208013）；国家自然科学基金（51138001，91215301）；中央高校基本科研业务费专项资金资助项目． （）
