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

Cited by Lee Sonogan

Typical force characteristic of systems with quasi-zero stiffness |  Download Scientific Diagram

Abstract by Shao-Hua Li, Nan Liu, Hu Ding

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.

Publication: Science Progress (Peer-Reviewed Journal)

Pub Date: July 20, 2020 Doi: https://doi.org/10.1177/0036850420940891

Keywords: Vibration isolator with a vibration absorber system, nonlinear, quasi-zero stiffness, multiscale method

https://journals.sagepub.com/doi/full/10.1177/0036850420940891 (Plenty more sections, figures aned references inn the article)

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