Research on a nonlinear quasi-zero stiffness vibration isolator with a vibration absorber

被引：6
作者：
Li, Shao-Hua [1 ]
Liu, Nan [1 ]
Ding, Hu [2 ]
机构：
[1] Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China
[2] Shanghai Univ, Inst Appl Math & Mech, Shanghai, Peoples R China
来源：
SCIENCE PROGRESS | 2020年 / 103卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Vibration isolator with a vibration absorber system; nonlinear; quasi-zero stiffness; multiscale method; DISPLACEMENT TRANSMISSIBILITY; ISOLATION SYSTEM;
D O I：
10.1177/0036850420940891
中图分类号：
G40 [教育学];
学科分类号：
040101 ; 120403 ;
摘要：
A negative stiffness mechanism consisting of a spring and cylinder is proposed, and a grounded dynamic vibration absorber is designed based on a quasi-zero stiffness vibration isolator to constitute the vibration isolator with a vibration absorber system. The range of parameters for attaining zero stiffness is derived from static analysis. The dynamic analysis of the vibration isolator with a vibration absorber system is carried out by a multiscale method, and the amplitude-frequency response equation of the system is obtained. The influence of different system parameters on the amplitude-frequency response is analyzed. The amplitude-frequency response of the quasi-zero stiffness vibration isolator is compared with that of the vibration isolator with a vibration absorber, and the linear and nonlinear analytical solutions of the vibration isolator with a vibration absorber system are also compared. The results show that the designed vibration isolator with a vibration absorber is an ideal choice for low-frequency vibration isolation, with no large resonance peak throughout the system and significantly improved reliability of the system.
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页数：18
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