From the equation of three-dimensional vibration of structures, the methods of multi-dimensional random mode displacement and mode acceleration have been put forward.
从多维地震动输入下的结构三维振动方程出发，给出了结构多维随机振动的振型位移法和振型加速度法。
2
Finally, the method of solving instantaneous acceleration power spectrum of nonstationary random response of arbitrarily point on vehicle is presented.
最后给出如何求解车辆上任一固定点非平稳随机响应的瞬时加速度功率谱。
3
The experiment results show that the platform has the ability to realize random linear acceleration movement environment.