双弹簧质量系统在竖直方向振动的实验研究

Experiment on Vertical Vibration of Double Spring-mass System

采用实验方法研究双弹簧质量系统在竖直方向的自由振动.结果表明:双弹簧质量系统简谐振动时的等效质量系数小于同种弹簧构成的单弹簧质量系统的等效质量系数;双弹簧质量系统非线性振动的周期随振幅及两根弹簧悬点间距离的增加而增大.

The free vibration along the vertical direction of the symmetric double spring-mass system has been studied with experimental method. It is discovered that the equivalent mass coefficient of ＂linear＂ double spring-mass system is bigger than that of single spring- mass system. The period of symmetric double spring-mass system enlarges with the adding of the amplitude and the distance of suspen- sion points of two springs.