噪声与振动控制Issue(4)：35-38,4.DOI:10.3969/j.issn.1006-1335.2014.04.008
高速列车内地板隔音垫声学特性的研究
Effect of Sound Insulation Pad on Sound Transmission Loss Property of Interior Floor of High Speed Trains
摘要
Abstract
The acoustic model of interior floor of high speed trains is established based on the transfer matrix method. The influence of elastic modulus, density, damping coefficient and thickness of the sound insulation pad on the transmission loss of the interior floor is studied. The results show that (1) sound insulation pad has large effect on the transmission loss of the interior floor. Comparing with the floor without sound insulation pad, the weighted sound insulation effect of the floor with 1mm thick pad can be increased by 5 dB; (2) the thickness of the sound insulation pad has a great influence on the transmission loss of the interior floor. When the sound insulation pad thickness is additionally increased by 1 mm, the weighted sound transmission loss of the interior floor can be increased by 1 dB ~3 dB; (3) the material parameter of the sound insulation pad has little influence on the sound transmission loss of the floor. For example, 0.02 change of damping coefficient will cause nothing in the change of the sound insulation of the floor.关键词
声学/隔声/高速列车/隔音垫/传递矩阵法Key words
acoustics/sound insulation/high speed train/sound insulating pad/transfer matrix method分类
数理科学引用本文复制引用
于金朋,刘小霞,黄雪飞,张庆刚,陈丽雯..高速列车内地板隔音垫声学特性的研究[J].噪声与振动控制,2014,(4):35-38,4.基金项目
国际科技合作项目 （）
