基于反应谱计算的基本原理，对于单自由度弹性体系在水平地震作用下的力平衡方程。-Calculated based on the basic principles of response spectrum for single degree of freedom elastic system under horizontal earthquake force balance equation.

一个用中心差分和纽马克算法计算地震反应的matlab程序(a program about calculate the reaponse of earthquake include central differencing and Newmark-B method)