与一阶摄动随机有限元相比，二阶摄动随机有限元具有较高的计算精度。
Compared with first-order perturbation, second-order perturbation stochastic finite element has the advantage of higher accuracy.
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。
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.
介绍运用摄动随机有限元法（PSFEM）分析顺层岩质边坡可靠性的推导过程。
The process in which the reliability of rock bedding slope is analyzed by applying the perturbation stochastic finite element method (PSFEM) is formulated.
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