Based on the method of small parameters perturbation of 2nd order, the stochastic functional of potential energy for structures with stochastic stiffness under stochastic stimulus is derived.
利用小参数摄动法，建立了随机结构在随机激励下的二阶摄动随机势能泛函。
In this paper, a new kind of nonlinear analytical method which does not depend on small parameters is described and is compared with the perturbation techniques.
本文描述了一种新的、不依赖于小参数的非线性分析方法，并分析、比较了该方法与摄动展开方法的优缺点。
A matrix perturbation method for the calculation of errors in precision electro-magnetic measuring circuits caused by small variation of circuit parameters is described in this paper.
本文提出用矩阵微扰法计算精密电磁测量线路的参数发生微小变化时引起的误差。
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