Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9862
Title: Power transmission from two coherent machines to a dual-layer coupling floor structure
Authors: Yun, Y
Mak, CM 
Keywords: Coherent sources
coupling structure
dual-layered plate
finite element
power transmissibility
Issue Date: 2011
Publisher: SAGE Publications
Source: Journal of vibration and control, 2011, v. 17, no. 5, p. 711-720 How to cite?
Journal: Journal of vibration and control 
Abstract: Several coherent machines are often installed on multiple layers of a coupling floor structure within a building. This paper reports on a study of the effect of the interaction between two such vibratory machines on the power transmitted to a coupling dual-layered floor plate and the level of power transmissibility. The study is based on a model of two rectangular machine models of even-mass distribution with four symmetrical supports; the mobilities of a simply supported concrete floor and dual-layered plate structure are computed using a Finite Element Analysis simulation. The results show that the total structure-borne sound power transmitted from either two coherent machine sources or an independent source to a coupling floor structure differs considerably from that emanating from an independent machine source on a single simply supported plate. This is especially true at certain strong coupling modes in the vibration isolation region. To predict the performance of vibration isolation more accurately, the power transmissibility method needs to consider the effect of effective floor mobility and the interactions of the mounting points of the independent machine sources, as well as the interactions of the mounting points of different machine sources, on a coupling floor structure.
URI: http://hdl.handle.net/10397/9862
ISSN: 1077-5463
EISSN: 1741-2986
DOI: 10.1177/1077546310371348
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