噪声与振动控制Issue(z1)：112-115,4.DOI:10.3969/j.issn.1006-1335.2013.S1.024
阻尼喷涂式高速列车铝型材减振降噪特性试验研究
Experimental Study on Vibration and Noise Reduction of Damping-sprayed Aluminum Profile Applied to High-speed Train
摘要
Abstract
In order to clearly understand the effect of damping-sprayed lay on vibration and noise reduction of aluminum profile floor of high-speed train, a corrugated aluminum profile is used as the basic plate and sprayed with the damping layer of 2 mm and 4 mm on it, respectively. Then the tests of the sound insulation, structural vibration and noise radiation are conducted in a laboratory. The test results show that as the damping layer width increases, the sound insulation increases, especially around 500 Hz. Sticking 2 mm damping layer on the aluminum profile floor can increase the weighted sound insulation of 4.5 dB compared to the aluminum profile floor with no damping. When the damping layer increases to 4 mm, the weighted sound insulation increases 2.4 dB once more. On the other hand, in the range of 100 Hz~250 Hz, 2 mm damping layer makes an opposite effect on the reduction of vibration and noise radiation, but 4 mm damping layer using works very well to a certain degree. Between 315 Hz and 400 Hz, the damping layers of 2mm and 4mm have no sound insulation effect. Above 500 Hz, with the thickness increase of the damping layer, the reduction of vibration and noise radiation increases. Especially at 500 Hz, 1250 Hz and 3150 Hz, the reduction is remarkable.关键词
振动与波/减振降噪/铝型材/阻尼/隔声/振动声辐射Key words
vibration and wave/vibration and noise reduction/aluminum profile/damping/sound insulation/vibration and noise radiation分类
交通工程引用本文复制引用
王瑞乾,肖新标,刘佳,温泽峰,金学松..阻尼喷涂式高速列车铝型材减振降噪特性试验研究[J].噪声与振动控制,2013,(z1):112-115,4.基金项目
国家863计划(2011AA11A103-2-2)；教育部创新团队(IRT1178) （2011AA11A103-2-2）
