Abstract
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 is contacts 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 vibration of the floor and the transmitted force to the slab.
