非拘束型粘弾性積層片持はりの制振特性評価

概要

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This paper deals with the evaluation of the damping property of a two-layered viscoelastic beam. We present two theoretical methods for the loss factor of the beam, using 1) the experimental values of the loss factor and Young's modulus of the damping material, 2) the expression for the loss factor of the two-layered beam, and 3) the expression for relative flexural rigidity. It was found experimentally that the relative flexural rigidity of a two-layered beam to that of a base plate changed against the relative thickness of the damping material and the base plate. As a result, the relative flexural rigidity can be formulated by introducing the characteristic index. Its validity was clarified experimentally. The values of a loss factor of a two-layered beam determined by the two theoretical methods presented here show good agreement with those from experiments.
社団法人日本機械学会の論文
1993-07-25