结构动力学基于摄动法的高阶非线性随机有限元方法研究(英文) |
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摘 要: |
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Study on high order perturbation-based nonlinear stochastic finite element method for dynamic problems |
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Authors: | Qing Wang Jing-zheng Yao |
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Institution: | (1) Department of Civil Engineering, University of Patras, P.O. Box 1424, 26504 Patras, Greece; |
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Abstract: | Several algorithms were proposed relating to the development of a framework of the perturbation-based stochastic finite element
method (PSFEM) for large variation nonlinear dynamic problems. For this purpose, algorithms and a framework related to SFEM
based on the stochastic virtual work principle were studied. To prove the validity and practicality of the algorithms and
framework, numerical examples for nonlinear dynamic problems with large variations were calculated and compared with the Monte-Carlo
Simulation method. This comparison shows that the proposed approaches are accurate and effective for the nonlinear dynamic
analysis of structures with random parameters. |
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Keywords: | |
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