高速铁路轮轨声辐射特性研究  

Sound Radiation Characteristics Study of High-speed Railway Wheel and Rail

作　　者：步青松 周卫军 伍向阳 陈迎庆 邵琳 BU Qingsong;ZHOUWeijun;WU Xiangyang;CHEN Yingqing;SHAO Lin(Energy Saving&Environmental Protection&Occupational Safety and Health Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China;Development&Reform Department,China State Railway Group Co.,Ltd.,Beijing 100844,China)

机构地区：[1]中国铁道科学研究院集团有限公司节能环保劳卫研究所,北京100081 [2]中国国家铁路集团有限公司发展和改革部,北京100844

出　　处：《铁路节能环保与安全卫生》2020年第4期1-7,17,共8页Railway Energy Saving & Environmental Protection & Occupational Safety and Health

基　　金：中国国家铁路集团有限公司科研开发计划课题(N2019G047);中国铁道科学研究院集团有限公司科研开发基金项目(2019YJ131)。

摘　　要：通过建立车轮有限元模型和钢轨离散支撑有限元模型,结合声学边界元模型,计算得到车轮和钢轨在径向单位力激励下的声辐射特性。结果表明:高速铁路轮轨声辐射特性与车轮和钢轨部件的本征动力特性密切相关,车轮和钢轨声辐射功率呈现低频快速升高、中高频维持在较高水平并波动的特点。By establishing wheel finite element model and rail discrete support finite element model,combined with acoustic boundary element model,the sound radiation characteristics of wheel and rail under radial unit force excitation are calculated.The results show that the wheel-rail acoustic radiation characteristics of high-speed railway are closely related to the intrinsic dynamic characteristics of wheel and rail components,and the acoustic radiation power of wheel and rail is characterized by rapid increase at low frequency,maintaining a slightly higher level and fluctuating in the middle and high frequencies.

关 键 词：高速铁路 车轮 钢轨 有限元 边界元 声辐射 

分 类 号：U238[交通运输工程—道路与铁道工程] TB533[理学—物理]