Dynamic response analysis of vibration isolation model with quasi-zero stiffness characteristic = Phân tích đáp ứng động lực học của mô hình cách ly dao động với độ cứng gần bằng không

Abstract

This main work is to explore the dynamic behavior of a vibration isolation model with constant force characteristic which can broaden the isolation region toward low frequency due to high static stiffness and low dynamic stiffness. Firstly, a piecewise dynamic model is established in consideration of the detachment between cam and roller, and structure damping due to the hysteresis effects of the elastic element. The relation of displacement and frequency is obtained by using Average method. Further, the effects of the working and manufacture parameters on the amplitude-frequency curve are verified by simulation. This work will offer a useful solution to design and manufacture the low frequency vibration isolation systems.