Dynamic Instability of MRE Embedded Soft Cored Sandwich Beam with Non-Conductive Skins | Zendy

Santosha K. Dwivedy | Zendy; M. Srinivas | Zendy

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Dynamic Instability of MRE Embedded Soft Cored Sandwich Beam with Non-Conductive Skins

Author(s) -

Santosha K. Dwivedy,

M. Srinivas

Publication year - 2011

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2011/464610

Subject(s) - viscoelasticity , materials science , galerkin method , parametric statistics , beam (structure) , timoshenko beam theory , instability , core (optical fiber) , magnetorheological elastomer , vibration , structural engineering , work (physics) , magnetorheological fluid , composite material , finite element method , mechanics , mathematics , physics , damper , acoustics , engineering , mechanical engineering , statistics

In this work the governing temporal equations of motions with complex coefficients have been derived for a three-layered unsymmetric sandwich beam with nonconductive skins and magnetorheological elastomer (MRE) embedded soft-viscoelastic core subjected to periodic axial loads using higher order sandwich beam theory, extended Hamilton's principle, and generalized Galerkin's method. The parametric instability regions for principal parametric and combination parametric resonances for first three modes have been determined for various end conditions with different shear modulus, core loss factors, number of MRE patches and different skin thickness. This work will find application in the design and application of sandwich structures for active and passive vibration control using soft core and MRE patches.

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