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《计算结构力学及其应用》 1994-01
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Finite Element Analysis of Nonlinear Random Process

Gong yaonan;Qian Chun(Beijing niversity of Aeronaitics Astrontics,Beijing,100083,P.R.China)  
In view of fact a large amount of random variables exist in a practical complicat-ed engineering structure,considerable computational effort is required for the analysis ofnonlinear random process. In the present paper the generalized random variable is suggested,instead of the usual independent random variables,to reduce the number of basic randomvariables. Meanwhile,the response surface method is used in the present paper to improvethe computational efficiency,rather than the sensitivity method or perturbation method.Computational results show that,with the help of forementioned measures ,good results areachieved.Hence,these measures would be conducive to the application of nonlinear stochas-tic finite element method in the reliability analysis of a practical engineering structure.
【Fund】: 国家自然科学基金
【CateGory Index】: TU311.4
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