噪声与振动控制Issue(1)：48-52,5.DOI:10.3969/j.issn.1006-1335.2016.01.010
高速列车车体轻量化层状复合结构隔声设计
Study on Sound Insulation and Lightening Design of Layered Composite Structures for High-speed Trains
摘要
Abstract
The layered composite structure is widely used for the weight reduction in high-speed trains. Improving the sound insulation properties of the composite structure is the key technology for vibration and noise reduction of high-speed trains. In this paper, based on the transfer matrix method, a model of typical composite structure made of aluminum plate, porous material layer, air layer and carbon-fiber reinforced plate for high-speed trains was established. Influence of the property of the air layer and the porous material on the sound insulation performance of the composite structure was analyzed by numerical calculations. The results show that the air layer between the aluminum panel and the carbon fiber reinforced polymer panel can hardly improve the sound insulation property of the composite structure in the lower frequency band under a diffusing field excitation. Instead, the transmission loss curves have acoustic valleys at some specific frequencies because of the cavity resonance. But adding a porous material layer in the air layer can suppress the acoustic valleys according to the principle of sound absorption of porous materials. Through the optimization design, the optimized structure form of“aluminum panel+air layer+porous material layer+air layer+CFRP panel”was obtained. It can improve the sound insulation performance effectively as well as reduce the weight of the structure of vehicles.关键词
声学/高速列车/轻量化/层状复合结构/隔声/多孔材料/空气层Key words
acoustics/high-speed train/lightweight design/composite structure/sound transmission loss/porous material/air layer分类
数理科学引用本文复制引用
伏蓉,张捷,姚丹,肖新标,金学松..高速列车车体轻量化层状复合结构隔声设计[J].噪声与振动控制,2016,(1):48-52,5.基金项目
国家自然科学基金（U1434201，51475390）；牵引动力国家重点实验室自主研究课题 （）
