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《China Mechanical Engineering》 2018-07
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Time-dependent Reliability Analysis for Structures under Multi-level Loads and Cumulative Damages

SUN Jianping;TANG Zhaoping;LUO Yiping;School of Transportation and Logistics,East China Jiaotong University;School of Traffic & Transportation Engineering,Central South University;  
Under the functions together with various kinds of uncertainty factors and time factors in the service environments,strength degradation and cumulative damages on structures would be conducted,and thereby seriously affected the structural reliability.The traditional reliability model could not reflect the influences of loading sequence and strength degradation.The problems of the multi loads equivalent transformation were studied herein by using interval theory and considering nonlinear evolution phenomena of fatigue damages caused by the different loading sequences.Aiming at the strength degradation structures under the multi-level loads,the dynamic non-probabilistic reliability prediction model was established and the analytical method of time-dependent reliability was constructed based on an interval model.Finally,by calculating an example,the time-dependent reliability for structures under multi-level loads was analyzed,and the validities of the method and model were verified.
【Fund】: 国家自然科学基金资助项目(51465017);; 江西省普通本科高校中青年教师发展计划访问学者专项资金资助项目(赣教办函[2016]169号)
【CateGory Index】: TB114.3
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【Co-citations】
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1 XIA Yirui;DAI Jingtao;SUN Zhongyun;Naval Aviation University Qingdao Campus;;Research on reliability evaluation of mechanical structure based on copula function[J];自动化与仪器仪表;2018-10
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