本文论述铁路机车车辆系统的非线性随机动力响应。
This paper deals with the nonlinear random dynamic response of a locomotive or vehicle system.
本文利用有限元方法，分析了平面刚架结构对地震载荷的随机动力响应问题。
Stochastic dynamic responses of planar rigid-frame structures to quake loads are investigated by using the finite element approach.
本文提出分析不确定性结构随机动力响应的一种新的数值方法——动态随机有限元法。
The dynamic stochastic finite element method, a new random numerical method, is developed for analyzing the stochastic dynamic response of structures with random parameters.
众多研究工作表明：结构参数的随机变异性可以引起结构随机动力响应的随机涨落，结构力学参数的随机性还可能成为主导因素。
Some research state clearly: random dynamic respond of large fluctuation levels can be given rise to random variability of structure's parameters and sometimes it becomes leading factor.
数值模拟结果与数值解比较表明：正交多项式逼近法能有效地解决此类非线性随机动力系统的响应问题。
Numerical simulation implies that the proposed method is a new effective approach to dynamical responses of stochastic nonlinear systems.
数值模拟结果与数值解比较表明：正交多项式逼近法能有效地解决此类非线性随机动力系统的响应问题。
Numerical simulation implies that the proposed method is a new effective approach to dynamical responses of stochastic nonlinear systems.
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