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| Finite Element Analysis of Nonlinear Random Process |
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| DOI：10.7511/jslx19941002 |
| KeyWord:stochastic finite element method,generalized random variable,response surface mpthod, |
| Gong yaonan Qian Chun |
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| Abstract: |
| 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. |
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