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《Journal of Naval University of Engineering》 2010-01
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Analysis of vibration of a sandwich plate with viscoelastic mid-layer based on Kelvin model

MAO Liu-wei,WANG An-wen,HU Ming-yong(College of Science,Naval Univ.of Engineering,Wuhan 430033,China)  
Based on Kelvin model,a set of dynamical equations were derived for rectangular sandwich plates with a viscoelastic mid-layer,and the analytic solutions of natural frequencies and modal loss factors were presented under the simple support boundary condition.The comparison of the current results with those in the documents shows that applying Kelvin model to the dynamical analysis of viscoelastic structure is simple and more accurate than the constant complex model.The influences of viscoelastic layer parameters on the vibration behaviors of sandwich plates were analyzed.The analysis results show that the structure loss factors will increase significantly with the increase of thickness of the damping layer;the structure loss factors will increase to its maximum value and then decrease with the increase of the modulus of the damping layer,which shows that there shall be an optimal value about the modulus of the damping material for the vibration suppression.
【Fund】: 国家自然科学基金资助项目(10572150)
【CateGory Index】: TB533
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