Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13248
Title: Stochastic microvibration response analysis of a magnetorheological viscoelastomer based sandwich beam under localized magnetic fields
Authors: Ying, ZG
Ni, YQ 
Huan, RH
Keywords: Magnetic field distribution
Magnetorheological viscoelastomer
Microvibration
Random excitation
Sandwich beam
Issue Date: 2015
Publisher: Elsevier
Source: Applied mathematical modelling, 2015, v. 39, no. 18, p. 5559-5566 How to cite?
Journal: Applied mathematical modelling 
Abstract: The microvibration of a horizontal magnetorheological viscoelastomer (MRVE) based sandwich beam with supported mass under random disturbances and localized magnetic fields is studied to verify its control effectiveness. The localized magnetic field covering incompletely the beam results in the MRVE properties varying in space. The effects of the localized magnetic field distribution on the microvibration are considered in the analysis. The vibration equations with spatial parametric variation and temporal randomness of the beam system under the localized magnetic field are derived, and solved by the modal transformation and frequency spectrum analysis. Then the expression of the root-mean-square velocity criterion for microvibration is given, where the non-homogeneous MRVE modulus is considered due to the localized magnetic field. The proposed analysis method can be extended to other random excited composite structures with viscoelastic cores. The stochastic microvibration control effectiveness of the beam system and the effects of the localized magnetic field intensity and placement on the microvibration response are verified by numerical results.
URI: http://hdl.handle.net/10397/13248
ISSN: 0307-904X
DOI: 10.1016/j.apm.2015.01.028
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