In this paper, the component mode synthesis, combined with the perturbation and stochastic finite element, is used to study the random eigen problem of large and complicated structures.
采用子结构模态综合和摄动随机有限元相结合求解工程结构的随机特征问题。
The effects of WOB fluctuation of drill string on the wellbore trajectory are analyzed by using stochastic finite element method and perturbation equation.
借助随机有限元方法和摄动方程初步分析了钻压波动对井眼轨迹的影响。
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