粘弾性型動吸振器による最適制振設計法

概要

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Viscoelastic suspension systems are widely used as one of the effective techniques for suppressing the vibration. In this paper, the damping effect (vibration transmissibilities) of primary system with viscoelastic type dynamic vibration absorber consisting of a mass and a viscoelastic material in presented theoretically and experimentally. The fixed point theory is employed to derive the optimum tuning condition and the expression equation of damping in case of the primary system with no damping. In case that the primary system has some damping, the opitmum values are derived by introducing a correction factor. Mass and complex spring element of two degree-of-freedom vibration system are also considered as an equivalent model of spring and dashpot. The vibration transmissibilites are measured experimentally. The good agreement between experimental and theoretical results implies that the optimum vibration damping condition for two degree-of-freedom vibration system with viscoelastic material was formulated, and suggested that the formulation using complex spring is very effective for designing the dynamic vibration absorber with viscoelastic materials.
東海大学の論文