铁路客车车轮振动与声辐射特性分析
岳丽1,2
（1.兰州交通大学 机电工程学院，甘肃 兰州 730070；2.甘肃交通职业技术学院，甘肃 兰州 730070）
摘要：车轮是铁路客车上重要的声辐射部件。客车运行时，轮轨表面粗糙度使车轮产生振动及辐射噪声。利用有限元软件ABAQUS建立车轮的有限元模型，并计算0～10000 Hz内车轮的固有模态及振型。在车轮名义接触点施加单位力，采用模态叠加法，对车轮的频率响应函数进行分析。将车轮的频率响应作为边界条件，利用直接边界元法对其进行声辐射特性分析。
关键词：铁路车轮；有限元法；直接边界元法；声辐射特性
中图分类号：U260.11 文献标志码：A 文章编号：1006－0316 (2014) 03－0008－03
Vibration and noise radiation characteristics analysis of wheel of railway carriage
YUE Li1,2
( 1.School of Mechatronic Engineering, Lanzhou JiaoTong University, Lanzhou 730070, China;
2.Gansu Vocational and Technical College of Communications, Lanzhou 730070, China )
Abstract：In railway carriages, the wheels are the important components radiating noise. Wheels will vibrate excited by the wheel/rail surface roughness and produce noise emission when carriages runs. FEM of the wheel is built by ABAQUS, and the natural frequency and vibration modes of the wheel of 0-10000Hz are calculated. A normal unit force is applied on the nominal contact point to analyze the frequency response function of the wheel using modal superposition method. The result of the frequency response function, is taken as boundary condition to analyze the sound radiation characteristics through the direct boundary element method (DBEM).
Key words：wheel of railway carriage；FEM；direct boundary element method；acoustic radiation characteristics
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收稿日期：2013－11－28
作者简介：岳丽（1981－），甘肃白银人，硕士研究生，讲师，主要从事车载工具的研究与教学。
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