Design and Analysis of a Horizontal Quasi-Zero Stiffness Vibration Isolator by Combining Rolling-Ball and Disk Springs in Parallel

作     者：Gaofeng Guan Dengfeng Xu Yu Zhu Qiang Li Qiang Yu 

作者机构：School of Mechatronics Engineering University of Electronic Science and Technology of China Chengdu 611731 China State Key Lab of Tribology Tsinghua University Beijing 100084 China Department of Mechanical Engineering Tsinghua University Beijing 100084 China Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control Tsinghua University Beijing 100084 China School of Information Engineering Wuchang University of Technology Wuhan 430223 China 

出 版 物：《Journal of Beijing Institute of Technology》 (北京理工大学学报（英文版）)

年 卷 期：2017年第26卷第4期

页      面：468-476页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Supported by National Science and Technology Major Project(2013ZX02104003) 

主　　题：quasi-zero stiffness (QZS) vibration isolation natural frequency transmissibility 

摘      要：Combining disk springs having negative stiffness with a rolling-ball in parallel is proposed in this paper. It is used to reduce the system stiffness and the positioning error in a non-ideal *** characteristics of a disk spring are analyzed. The dynamic equation of its motion has been obtained based on Newton＇s second law. After definition of a error margin,the dynamic equation of the motion can be treated as a Duffing oscillator,and the influences of non-dimensional parameters on the stiffness and transmissibility are studied. The natural frequency and transmissibility are achieved in a linearization range,where the ratio of linear to nonlinear items is small *** influence of mass ratio and non-dimensional parameters on natural frequency are analyzed. Finally,a comparison of numerical example demonstrates that the QZS system can realize a lower stiffness within an increased range.