四川环境2024，Vol.43Issue(6)：62-67,6.DOI:10.14034/j.cnki.schj.2024.06.009
城市轨道交通车轮声振特性研究
Study on Sound and Vibration Characteristics of Wheel on Urban Rail Transit
摘要
Abstract
Noise disturbance is one of the main environmental pollution problems of overhead lines for urban rail transit.Taking the wheel of Chongqing Rail Transit Line 1 as a research object,ANSYS was applied to analyze the modal and harmonious response of the wheel in this paper.Then,LMS virtual.lab was used to analyze the relevant acoustic and vibration characteristics at the peak of wheel admittance and carry out visualization research.The analysis results showed that the tread and spoke vibrated greatly in the high frequency range above 1,000 Hz,and with the increase of frequency,the tread and spoke vibrate more significantly.In the high frequency range above 2,000 Hz,the radial mode had a greater impact on wheel-rail noise.In the(r,5)mode,the acoustic power reached the maximum value of 107.75 dB.The directivity of wheel sound radiation had a certain symmetry.With the increase of frequency,the number of sidelobes of directedness increased first and then decreased,and the noise pressure level of the wheel facing outside the track line was greater than that facing inside.The wheel was divided into 5 parts:flange,rim,wheel tread,spoke plate and hub for acoustic contribution analysis.In general,spoke plate contributed the most to wheel noise,and specific noise reduction measures should be taken.关键词
城市轨道交通/轮轨噪声/噪声特性/有限元法Key words
Urban rail transit/wheel-rail noise/noise characteristics/finite element method分类
资源环境引用本文复制引用
尚婷,钟昊,黄政东,孔云森..城市轨道交通车轮声振特性研究[J].四川环境,2024,43(6):62-67,6.基金项目
重庆市建设科技项目(城科字2020第4-6). （城科字2020第4-6）
