Abstract
Magnetorheological elastomers (MRE) are class of smart materials, whose stiffness and damping characteristics can be changed by applying external magnetic field. In this work three layered rectangular plate is considered where top and bottom layers are made up of aluminium layers and middle layer is MRE material to study free vibration characteristics of the system. With help of Lagrange principle and finite element method (FEM), the governing equation of motion is derived. Natural frequencies and modal loss factors of MRE cored sandwich plate is obtained for different core and constraining layer thickness by using modal strain energy method (MSE) for different magnetic fields. This work will find applications in active reduction of vibrations by applying magnetic field.
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