粘弾性心材を有する複合材サンドイッチ長方形板の曲げ振動減衰特性

概要

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The damping properties of the Flexural vibration for a composite rectangular sandwich plate with a viscoelastic core and composite laminated faces are presented. The damping analysis is carried out using the Ritz method. The elastic moduli of the plate are treated as complex quantities, and the shear modulus and loss factor of the viscoelastic core depend on the excited frequency. The present complex eigenvalue problem is solved by means of an iterative procedure, and the damped natural frequencies and modal loss factors are determined. The present solutions are validated by comparison with published data. The effects of the frequency dependence on the core material, core thickness, the fiber angle and stacking sequence of the composite laminated faces upon the damping properties are studied.
社団法人日本機械学会の論文
1997-09-25