Effect of Delaminations on Free Vibration Characteristics of Circular Laminated Plates(Mechanical Systems)

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  • 積層円板の自由振動特性に及ぼす層間はく離の影響(機械力学,計測,自動制御)
  • セキソウ エンバン ノ ジユウ シンドウ トクセイ ニ オヨボス ソウカン ハクリ ノ エイキョウ (キカイ リキガク, ケイソク, ジドウ セイギョ)
  • 積層円板の自由振動特性に及ぼす層間はく離の影響
  • セキソウ エンバン ノ ジユウ シンドウ トクセイ ニ オヨボス ソウカン ハクリ ノ エイキョウ

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The influence of multiple disk-shaped delaminations of a same size on the natural vibration characteristics of the clamped circular laminated plates has been investigated. The basic assumptions are that the delaminated layers are contacting one another and inplane inertia effects are neglected. The equation of motion and constitutive relations for a plate are expressed in term of transverse deflection and stress function. Analyses and experiments are carried out for the natural frequencies. Theoretical and experimental results agree well, which validates the analytical model assumed in present study. It is shown that the effect of the in-plane displacements of the reference-surface on the free vibration characteristics of laminated plates is small, by comparing the present results with hinged model's results which are neglected the in-plane displacements.

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