Band-Gap of a Soft Magnetorheological Phononic Crystal

被引：55

作者：

Bayat, Alireza ^{[1
]}

Gordaninejad, Faramarz ^{[1
]}

机构：

[1] Univ Nevada, Dept Mech Engn, Composite & Intelligent Mat Lab, Reno, NV 89557 USA

来源：

JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME | 2015年 / 137卷 / 01期

关键词：

phononic crystal; soft magnetorheological elastomers; magnetoelastic; bandgaps; instability; band diagram; Bloch boundary conditions; SOLIDS; DEFORMATION; WAVES;

D O I：

10.1115/1.4028556

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper presents the wave propagation in a tunable phononic crystal consisting of a porous hyperelastic magnetorheological elastomer (MRE) subjected to an external magnetic field. Finite deformations and magnetic induction influence phononic characteristics of the periodic structure through altering the geometry and material properties of the unit cell. The governing equations for incremental time-harmonic plane wave motions superimposed on a static predeformed media are derived. Analytical and finite element (FE) methods are used to investigate dispersion relation and band structure of the phononic crystal for different levels of deformation and applied magnetic induction. It is demonstrated that large deformations and magnetic induction could transform the location and width of band-gaps.

引用

页数：8

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