Preprint Article Version 1 This version not peer reviewed

Modeling and Dynamics of a MDOF Isolation System

Version 1 : Received: 11 April 2017 / Approved: 12 April 2017 / Online: 12 April 2017 (04:29:06 CEST)

A peer-reviewed article of this Preprint also exists.

Song, Y.; Sun, X. Modeling and Dynamics of a MDOF Isolation System. Appl. Sci. 2017, 7, 393. Song, Y.; Sun, X. Modeling and Dynamics of a MDOF Isolation System. Appl. Sci. 2017, 7, 393.

Journal reference: Appl. Sci. 2017, 7, 393
DOI: 10.3390/app7040393

Abstract

This study analyzes the modeling and dynamics of a novel passive in Multi-Degree-of-Freedom (MDOF) vibration isolation platform which can achieve significant isolation effect. Symmetrical Scissor-Like structures (SLSs) are utilized in the proposed MDOF isolation platform as the supporting and isolation elastic components. Based on the mathematical modeling and theoretical analysis of the MDOF vibration isolation system with SLSs, the effect of structural parameter and joint friction on stiffness and damping properties is investigated. It is shown that due to geometric relations within the SLSs, the natural frequencies can be reduced via adjusting structural parameters of the SLS for different direction vibration isolation. Theoretical and experimental results show that the SLS isolation platform can achieve much better loading capacity and vibration isolation performance simultaneously by only using linear passive components because of the MDOF adjustable stiffness property. Therefore, with low costing and energy consumption, the proposed novel isolation platform can provide the improvement of vibration suppression in various engineering practices.

Subject Areas

MDOF isolation platform; geometrical nonlinearity; vibration suppression; adjustable stiffness property

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