说明：  模態參數識別法裡的複模態指示函數法，利用Newmark法，在各自由度分別加入脈衝力，並假設初始狀態為靜止，得到位移、速度及加速度之時域響應
(Modal parameter identification method in the Complex mode indicator function method using Newmark method, the degree of freedom in the impulsive force were added, and assuming that the initial state of rest, time-domain displacement, velocity and acceleration of response)