The rigid shaft model and flexible shaft model of the drive train based on the spring-mass-dampersystem are used to analyze the dynamics of the drive train.
The equivalent viscous damping ratio and the equivalent natural frequency are obtained by comparing the system with a purely linear, spring-mass-dampersystem of single freedom.
通过和单自由度线性弹簧-质量-阻尼系统进行比较，得到该带裂缝梁结构的等效自然频率和等效粘滞阻尼比。
3
In this model, the tramcar was regarded as two degrees of freedom spring-mass-dampersystem, and the track was regarded as Bernoulli-Euler beam that locates on continuous and elastic ballast.