522 てこ式変位拡大機構を用いた粘弾性-摩擦複合ダンパによる配管の制振

概要

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In the previous papers, the authors proposed two types of passive dampers using a lever-type displacement magnifying mechanism which give damping within a relative displacement in the region of about 0.1&acb;10mm. One was a magnetic damper with rare-earth magnets, and the other was a viscoelastic damper with acrylic viscoelastic material. In this paper, a new type of viscoelastic-friction damper has developed, and the effects of vibration suppression for a three-dimensional piping system were discussed experimentally and numerically. The damper consists of a displacement magnifying mechanism and viscoelastic material directly connected to a friction plate. The trial damper was made, the resisting force characteristics of the damper were measured, and the parameters of four-element and the element models of the viscoelastic material were identified. The trial damper was attached to the corner of the three-dimensional piping system rigidly supported at the both ends, and its frequency responses and seismic responses were measured using an elctrohydraulic type shaking table. The experimental results are compared with the calculated results obtained by the finite element method (ANSYS), and the appropriate parameters of the damper are discussed.
社団法人日本機械学会の論文
2002-09-13