Influence of damping ratios on the dynamical characteristics of vibration isolation system based on Smart Spring Mechanism

摘要

The model of negative vibration isolation system with damping based on Smart Spring Mechanism is obtained. To separate the whole motion process of vibration isolation system into two types of motion pattern consisting of slipping motion and sticking motion, i.e., the system response is piecewise linear, the analytic solution of system response is solved by connected-seam method. Then the condition of that keeping the sticking motion and influence of damping ratios are analyzed. The analysis results show that the main reasons inducing the variations of amplitude-frequency characteristic of system consist of the damping ratio ζχ and control parameter η, and both the damping ratio ζχ and relative damping ratio γ obviously affect the motion state of system.