Plate Damping due to Thickness Deformations in Attached Viscoelastic Layers

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Abstract
Energy dissipation due to thicknesswise motion of viscoelastic layers attached to plates is analyzed in order to supplement previous analyses of damping due to shear, flexural, and in-plane extensional motions. It is shown that the thicknesswise motion may constitute an important damping mechanism for relatively soft and thick viscoelastic layers at frequencies corresponding to standing-wave resonances in the damping layer. The general behavior of thickness-compression damping layers is discussed on the basis of a relatively simple analysis, and reasonable agreement between theory and experimental results is demonstrated.

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