Dynamic Analysis of Viscoelastic Sandwich Beam

Mechanical Engineering

In this research work vibration analysis of a viscoelastic sandwich beam is studied. A finite element model will be developed for the three-layer viscoelastic sandwich beam. Sandwich beam is modelled using linear displacement field at face layer and non-linear displacement field at core layer, under harmonic loading viscoelastic core exhibits complex modules. The equations of the motion for the viscoelastic sandwich beam is derived by using Euler–Bernoulli beam theory. Specimens are modelled by varying taking core material as viscoelastic and face layers are isotropic and studied under the fixed-fixed, cantilever, simply supported and free- free boundary conditions for model analysis. The natural frequencies are obtained for various models are estimated by multi layered core sandwich beam theory. The response of the beam under various boundary conditions are performed by FEA. The obtained theoretical results are compared with the results obtained from FEA

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