噪声与振动控制Issue(3)：60-66,7.DOI:10.3969/j.issn.1006-1335.2015.03.014
高速列车复合板隔声性能的试验研究
Experimental Study on Sound Insulation Performance of Composite Plates of High-speed Trains
摘要
Abstract
The sound insulation performances of various composite plates for high-speed trains were studied experimentally according to the indoor sound insulation test standard. The types of the composite plates include: different thickness of air-core between two aluminum panels, different density of porous material core (foamed aluminum) between two aluminum panels; different thickness of sound insulation pad between two aluminum panels. Through the comprehensive investigation of the above composite plates, the influence of the core thickness and the filler material on the sound insulation effect of the composite plates was determined. The results show that there is an obvious anastomosis valley for the aluminum plate with an air-core, however, its sound insulation effect is good in high frequency range. Foamed aluminum can effectively inhibit anastomosis valley, and small porosity is helpful to improve sound insulation effect. The sound insulation pad can improve the sound insulation performance of the composite plate. It is worth noting that the thickness selection of sound insulation pad depends on the concerned frequencies. In this work, systematical investigation of the influencing factors on the sound insulation performance of the composite plates for high-speed trains were conducted, which may provide a reference for the optimization of sound insulation performance of composite plates in high-speed trains.关键词
声学/复合板/空气层/泡沫铝/隔声Key words
acoustics/composite plate/air layer/foamed aluminum/sound insulation分类
交通工程引用本文复制引用
李牧皛,沈火明,王瑞乾,韩健,圣小珍..高速列车复合板隔声性能的试验研究[J].噪声与振动控制,2015,(3):60-66,7.基金项目
国家自然科学基金(51475390, U1434201)；国家863计划(2011AA11A103-2-2) （51475390, U1434201）
