噪声与振动控制2017，Vol.37Issue(2)：85-90,6.DOI:10.3969/j.issn.1006-1355.2017.02.018
敷设阻尼加筋外地板结构振动声辐射特性研究
Study on Structural Vibration and Acoustic Radiation of Reinforced Outer Floors with Damping Materials
张丰收 1沈火明 2张文正 1吕稀 1宋海洋 1熊夫睿1
作者信息
- 1. 中国核动力研究设计院 核反应堆系统设计技术重点实验室,成都 610213
- 2. 西南交通大学 力学与工程学院,成都 610031
- 折叠
摘要
Abstract
The finite element model of reinforced outer floors in high-speed trains is established by means of acoustic software. The influence of damping material properties on the acoustic radiation characteristics of the outer floor structure is investigated. The influence of panel's thickness, structural damping coefficient and damping material properties on sound transmission loss of the outer floor is studied. The results demonstrate that the damping layer can effectively suppress the sound radiation of the outer floor. Increasing the panel's thickness and structural damping coefficient can raise the transmission loss of the floor. The damping layer thickness has a critical value for the maximum sound transmission loss of the floor. It is suggested that the resin damping material should be chosen so that the structure damping coefficient can be increased for getting an ideal acoustic performance for the reinforced outer floors.关键词
振动与波/高速列车/加筋/外地板/振动声辐射/阻尼/隔声量Key words
vibration and wave/high-speed train/reinforced/outer floor/vibration and acoustical radiation/damping/sound transmission loss分类
交通工程引用本文复制引用
张丰收,沈火明,张文正,吕稀,宋海洋,熊夫睿..敷设阻尼加筋外地板结构振动声辐射特性研究[J].噪声与振动控制,2017,37(2):85-90,6.
