粒子充てん構造物の減衰能に及ぼす複合充てんの影響 : 2種類の粒子および粒子と粘弾性体の複合充てん

概要

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The purpose of this study is to propose a composite packing technique for damping characteristic improvement on the structure packed with balls. In this paper, the damping characteristic of the composite packing structures is experimentally investigated. First, the effects of composite ball size and material on damping characteristic are examined in the case of composite packing of different ball size and composite packing of different ball material. The experiments show that the damping characteristics are markedly affected by the composite ball size and material, and it is confirmed that the damping capacity is effectively improved. Secondly, the effect of the viscoelastic material hardness and packed ball size are shown in the case of composite packing of the viscoelastic material and the steel balls. It is found that dramatic improvement in damping capacity is achieved by the composite packing of the soft viscoelastic material and the large steel balls. The generation of the noise by the collision of balls is not induced in such structures. Moreover, some considerations on the damping capacity generation in the composite packing structures are carried out.
公益社団法人精密工学会の論文
2004-08-05