A study of the effect of floor mobility on structure-borne sound power transmission

被引：17

作者：

Mak, CM ^{[1
]}

Su, JX ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Bldg Serv Engn, Kowloon, Hong Kong, Peoples R China

来源：

BUILDING AND ENVIRONMENT | 2003年 / 38卷 / 03期

关键词：

floor mobility; vibration isolation; power transmission;

D O I：

10.1016/S0360-1323(02)00185-3

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Force transmissibility is usually employed by engineers to select suitable vibration isolators for building services equipment. In the derivation of this usual engineering force transmissibility, floor structure is assumed to be unmovable and the effect of floor mobility is neglected. Based on this assumption, the use of spring isolators will certainly reduce sound power transmitted to the floor for all values of the ratio of forcing frequency and natural frequency greater than 1.414. However, floor structure is flexible and movable in reality. This paper will therefore discuss the effect of floor mobility on structure-borne sound power transmission from which it is shown that spring isolators do not help in vibration isolation at disturbing frequencies near the resonant frequency of the floor and may even worsen the problem at those particular frequencies. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：443 / 455

页数：13

共 7 条

[1]

Cremer L., 1973, STRUCTURE BORNE SOUN

[2]

FRY A, 1988, VIBRATION ISOLATION, pCH6

[3] Analysis and control of vibrational power transmission to machinery supporting structures subjected to a multi-excitation system .1. Driving point mobility matrix of beams and rectangular plates [J].

Koh, YK ;

White, RG .

JOURNAL OF SOUND AND VIBRATION, 1996, 196 (04) :469-493

[4] ON EFFECTIVE MOBILITIES IN THE PREDICTION OF STRUCTURE-BORNE SOUND-TRANSMISSION BETWEEN A SOURCE STRUCTURE AND A RECEIVING STRUCTURE, .1. THEORETICAL BACKGROUND AND BASIC EXPERIMENTAL STUDIES [J].

PETERSSON, B ;

PLUNT, J .

JOURNAL OF SOUND AND VIBRATION, 1982, 82 (04) :517-529

[5]

SHARLAND I, 1990, WOODS ACOUSTICS DIVI, P135

[6]

SMITH BJ, 1996, VIBRATION ACOUSTICS, pCH7

[7]

SU JX, 1995, J SOUND VIBRATION, V185, P731

← 1 →