618 運動量交換型衝撃吸収ダンパーを用いた模型室内の衝撃音低減研究(OS-4 ダンピング技術,研究発表講演)

概要

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Floor heavy impact sound caused by children's jumping in condominiums is a serious problem because there is no effective device to reduce it. In this study, a momentum exchanging damper was presented to reduce the impulsive vibration of the floor. This damper was composed of a spring, a dashpot and a mass, whose mass was in contact with the floor surface. When a heavy impact source falls on the floor, the momentum of that source is transmitted to the damper through the floor, so the momentum of the floor could be absorbed. Calculations and experiments were achieved to verify the effectiveness of the damper. It can be concluded that the damper significantly reduces the first vibration mode of the floor and reduces the sound pressure at the downstairs room.
一般社団法人日本機械学会の論文
2005-03-18