中文说明：把结构动力学中的数值计算用matlab编程，方便大家使用（主要有Houbolt法、Duhamel法、WilsonTheta法等几种）
English Description：
The numerical calculation in structural dynamics is programmed with MATLAB, which is convenient for everyone to use (mainly including Houbolt method, Duhamel method, Wilson theta method, etc.)