Shock Response and Energy Analysis of Quasi-zero Stiffness Vibration Isolation Platform
Shock response and energy analysis of quasi-zero stiffness(QZS)vibration isolation platform is carried out.To focus on the shock performance and energy loss characteristics,the six-degree freedom nonlinear dynamic equations of the QZS system under impact excitation are deduced firstly.The shock response of system is numerically analyzed and compared with that of the corresponding linear isolation system.Subsequently,the influences of damping and structural parameters on the buffering performance are analyzed by using the energy loss velocity as the evaluation index of the buffering performance.The results indicate that the response amplitude of system is higher than that of the corresponding linear system,but the response of the QZS system declines faster than that of the corresponding linear system,and the number of periods required for attenuation is less than that of the linear system.Therefore,the damping can improve the buffering performance,and the stiffness ratio and inclination angle have few impacts on the buffering performance of the QZS vibration isolation platform.
quasi-zero stiffnessvibration isolation systemshock responseenergy loss
国家科技期刊平台
NSTL
万方数据
维普
