Band stop vibration suppression using a passive X-shape structured lever-type isolation system. (February 2016)

• Record Type: Journal Article
• Authors: Liu, Chunchuan; Jing, Xingjian; Chen, Zhaobo
• Is Part Of: Mechanical systems and signal processing. Volume 68/69(2016)
• Page Start: 342
• Page End: 353
• Publication Date: 2016-02
• Subjects: Low-frequency vibration isolation -- Band-stop property -- Geometrical nonlinearity -- Anti-resonant frequency; Structural dynamics -- Periodicals; Vibration -- Periodicals; Constructions -- Dynamique -- Périodiques; Vibration -- Périodiques; Structural dynamics; Vibration; Periodicals; 621
• DOI: 10.1016/j.ymssp.2015.07.018
• Languages: English
• ISSNs: 0888-3270

Abstract

Abstract: In the paper, band-stop vibration suppression property using a novel X-shape structured lever-type isolation system is studied. The geometrical nonlinear property of an X-shape supporting structure is used to improve the band-stop characteristics in the low frequency range of the lever-type vibration isolator. With the dynamics modeling of this hybrid structural system, it is shown that the proposed hybrid vibration system has very beneficial nonlinear stiffness and damping properties which are helpful to achieve much wider stop bandwidth. Theoretical results demonstrate that the anti-resonant frequencies, width and magnitude of the stop band can all be flexibly designed with structural parameters, and the parameters of the X-shape supporting structure are very critical for designing the band-stop frequency to achieve excellent low-frequency isolation performance. The results in the study provide a new approach to the design of the passive vibration suppression system in the low frequency region. Highlights: A novel X-shape structured lever-type isolation system with band-stop property is proposed. Geometrical nonlinearity of an X-shape structure is helpful to achieve much wider stop-bandwidth. The width and magnitude of the stop band can all be designed with flexible structure parameters. The nonlinear stiffness and damping characteristics are very critical for designing the band-stop property.