Affiliations: Department of Mechanical Engineering, Indian Institute
of Technology Guwahati, Guwahati, India
Note: [] Corresponding author: Dr. S. K. Dwivedy, Professor, Mechanical
Engineering Department, Indian Institute of Technology Guwahati, Guwahati
781039, India. Tel.: +91 361 258 2670; Fax: +91 361 2690762; E-mail:
dwivedy@iitg.ernet.in
Abstract: 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.
