Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10991
Title: Attenuation of flexural vibration for floating floor and floating box induced by ground vibration
Authors: Hui, CK
Ng, CF
Keywords: Bending resonance
Floating floor
Nodalization
Stiffener
Train
Issue Date: 2009
Publisher: Pergamon Press
Source: Applied acoustics, 2009, v. 70, no. 6, p. 799-812 How to cite?
Journal: Applied acoustics 
Abstract: This paper investigates the vibration isolation performance of floating floor and floating box structures to control rail vibration transmission. Simple theoretical and experimental methods are developed to analyze the effects of stiffener beam, mass and arrangement of isolator on the fundamental natural frequency of the flexural vibration of floating floor and box structure. The vibration reduction performances of floating floor and box structure are found to be degraded by flexural vibration of the floor or supporting stiffener beam. From the results of vibration measurements; stiffener beams increase the fundamental natural frequency of flexural vibration of floating floor and enhance vibration isolation. Also they can further alleviate the effect of flexural vibration using optimum isolator arrangement effectively. The proposed floating box design achieved a vibration reduction of 15-30 dB in frequency region of critical rail vibration (30-200 Hz).
URI: http://hdl.handle.net/10397/10991
ISSN: 0003-682X
EISSN: 1872-910X
DOI: 10.1016/j.apacoust.2008.09.010
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