Effects of mounting positions and boundary conditions on the sound transmission loss of panels in a niche

作     者：Dan YAO Jie ZHANG Rui-qian WANG Xin-biao XIAO Dan YAO;Jie ZHANG;Rui-qian WANG;Xin-biao XIAO

作者机构：State Key Laboratory of Traction PowerSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Polymer Materials Engineering/Polymer Research InstituteSichuan UniversityChengdu 610065China School of Urban Rail TransitChangzhou UniversityChangzhou 213164China 

基　　金：the National Key Research and Development Program of China(No.2016YFE0205200) the National Natural Science Foundation of China(No.U1834201) 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2020年第21卷第2期

页      码：129-146页

摘      要：The sound insulation performance of railway car body structures is critical for the control of rail vehicle interior *** sound transmission loss(STL)measurements,a niche with a large depth is necessary to allow for mounting the wide range of thicknesses of railway car body panels and for the mechanical isolation of the two *** this study,two typical interior floor panels are tested in a series of mounting conditions and mechanical boundary *** change of STL results during measurement is also predicted by an STL prediction model based on the finite element *** lower frequencies,the STL results are influenced by both the mounting positions and the mechanical boundary *** higher frequencies,the STL results are mainly influenced by the mechanical boundary *** between the panel in the infinite baffle and niches at the resonance and off-resonance frequencies are *** both the effects of mounting positions and mechanical boundary conditions,the existence of the cavity amplifies the STL difference caused by the mechanical boundary conditions.

主 题 词：Sound transmission loss(STL) Railway interior floor Boundary condition Mounting position Niche effect 

学科分类：082304[082304] 08[工学] 080204[080204] 0802[工学-机械学] 0823[工学-农业工程类] 

核心收录：

D　O　I：10.1631/jzus.A1900494

馆 藏 号：203880851...