基础或支座引起的强迫振动的图解法

Graphical Method of Support Motion

基础与支座引起的振动是极为广泛的，如船舶甲板振动而引起船舶上层建筑振动，汽车驶过不平路面所产生的振动，地基振动而引起基础上建筑物的振动等都属于这一类振动现象。基础位移的简谐运动所引起的受迫振动，可用通常的求解常微分方程的待定系数法、复数求解法。本文试图用图解法求解，特点是简单扼要，力学意义明确。

Support motion is solved by traditional approach, for example, classical method solving differential equstion and method of complex algebra. In this paper graphical method is used because it is more clear and colors convenient.