Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20135
Title: Stochastic micro-vibration response characteristics of a sandwich plate with MR visco-elastomer core and mass
Authors: Ying, ZG
Ni, YQ 
Duan, YF
Keywords: Magneto-rheological visco-elastomer
Micro-vibration
Root-mean-square velocity response
Sandwich plate
Stochastic excitation
Issue Date: 2015
Publisher: Techno Press
Source: Smart structures and systems, 2015, v. 16, no. 1, p. 141-162 How to cite?
Journal: Smart Structures and Systems 
Abstract: The magneto-rheological visco-elastomer (MRVE) is used as a smart core to control the stochastic micro-vibration of a sandwich plate with supported mass. The micro-vibration response of the sandwich plate with MRVE core and supported mass under stochastic support motion excitations is studied and compared to evaluate the vibration suppression capability. The effects of the supported mass and localized magnetic field on the stochastic micro-vibration response of the MRVE sandwich plate are taken into account. The dynamic characteristics of the MRVE core in micro-vibration are described by a non-homogeneous complex modulus dependent on vibration frequency and controllable by applied magnetic fields. The partial differential equations for the coupled transverse and longitudinal motions of the MRVE sandwich plate with supported mass are derived from the dynamic equilibrium, constitutive and geometric relations. The simplified ordinary differential equations are obtained for the transverse vibration of the MRVE sandwich plate under localized magnetic fields. A frequency-domain solution method for the stochastic micro-vibration response of sandwich plates with supported mass is developed based on the Galerkin method and random vibration theory. The expressions of frequency-response functions, response power spectral densities and root-mean-square velocity responses of the plate in terms of the one-third octave frequency band are obtained for micro-vibration evaluation. Finally, numerical results are given to illustrate the large response reduction capacity of the MRVE sandwich plate with supported mass under stochastic support motion excitations, and the influences of MRVE parameters, supported mass and localized magnetic field placement on the micro-vibration response.
URI: http://hdl.handle.net/10397/20135
ISSN: 1738-1584
DOI: 10.12989/sss.2015.16.1.141
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