The direct modal perturbation based on selecting point by number-theoretic method is proposed to find the random response of un-damping linear random structures.
针对于多自由度线性复合随机结构的随机自振特性分析，提出了基于数论选点的直接模态摄动法。
The analytical method in this paper is also suitable for other linear structures suffering various stationary random processes.
本文的分析方法对于处理其它弹性结构在其它平稳随机过程下的响应亦是适用的。
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