Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61327
Title: A nonlinear vibration isolator achieving high-static-low-dynamic stiffness and tunable anti-resonance frequency band
Authors: Sun, X
Jing, X 
Issue Date: 2016
Source: Mechanical systems and signal processing, 2016, v. 80, p. 166-188
Abstract: This study investigates theoretically and experimentally a vibration isolator constructed by an n-layer Scissor-Like Structure (SLS), focusing on the analysis and design of nonlinear stiffness and damping characteristics for advantageous isolation performance in both orthogonal directions. With the mathematical modeling, the influence incurred by different structural parameters on system isolation performance is studied. It is shown that, (a) nonlinear high-static-low-dynamic stiffness and damping characteristics can be seen such that the system can achieve good isolation performance in both directions, (b) an anti-resonance frequency band exists due to the coupling effect between the linear and nonlinear stiffness in the two orthogonal directions within the structure, and (c) all these performances are designable with several structural parameters. The advantages of the proposed system are shown through comparisons with an existing quasi-zero-stiffness vibration isolator (QZS-VI) and a traditional mass-spring-damper vibration isolator (MSD-VI), and further validated by experimental results.
Keywords: Anti-resonance
Nonlinear stiffness and damping
Structural nonlinearity
Vibration isolation
Publisher: Academic Press
Journal: Mechanical systems and signal processing 
ISSN: 0888-3270
EISSN: 1096-1216
DOI: 10.1016/j.ymssp.2016.04.011
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