结构动力学中，用激励插值法求结构位移所用的MATLAB编程(Displacement by means of excitation interpolation)

一个单自由度结构的地震响应，文件包含EL地震波，采用三种方法计算，激励插值法，中心差分法和Newmark法。(The seismic response of a single-degree-of-freedom structure contains EL seismic waves, which are calculated by three methods: excitation interpolation method, centr