摘要
研究国内某地铁采用科隆蛋扣件小半径曲线段出现严重波磨的原因。在现场调查测试阶段,利用Bi-CAT波磨测试仪获取该区段波磨的基本特征,通过锤击试验法对轨道进行频率响应特性测试;在实验室试验与计算机仿真阶段,通过ANSYS软件建立列车轮对与轨道的耦合三维实体有限元模型,并结合列车轮对模态测试结果,分析轮对的横向模态特征与轮轨系统横向频响特征以及钢轨波磨特征频率之间的关系。通过现场调查测试与计算机仿真得出如下结论:轮轨耦合条件下200 Hz至400 Hz轮对横向模态特征导致的钢轨横向振动是该区段63 mm和40 mm波长波磨形成的原因之一。
The cause of severe rail corrugation in tightly curved track section with cologne egg fasteners in a domestic subway was investigated.Basic characteristics of rail corrugation were obtained with Bi-CAT and the frequency response function of the track section was tested by hammering method in field investigation.The wheelset modal test was done in the laboratory.A three-dimensional finite element model of a wheel-rail coupling system was established by using ANSYS software.Compared the results of the finite element analysis with those of the wheelset modal test,the relationship among wheelset lateral modal characteristics,wheel-rail lateral frequency response characteristics and characteristic frequency of rail corrugation was analyzed.Through field investigation,laboratory measurements and numerical simulations,it is concluded that the lateral vibration of the rail excited by the lateral modal vibration of the wheelset in the range of 200 Hz to 400 Hz in the condition of wheel-rail coupling is the main reason for corrugation with wavelength of 63mm and 40mm in this section.
作者
潘兵
王安斌
高晓刚
刘浪
PAN Bing;WANG Anbin;GAO Xiaogang;LIU Lang(School of Urban Rail Transportation,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《噪声与振动控制》
CSCD
2020年第1期132-137,共6页
Noise and Vibration Control
关键词
振动与波
钢轨波磨
轮轨耦合
横向动态响应
轮对振动
vibration and wave
rail corrugation
wheel-rail coupling
lateral dynamic response
wheelset vibration
