Non-ballasted Track High-frequency Vibration Of The Wheel-rail

With the rapid development of China’s rail traffic and the increase of train’s speeds, therailway noise pollution is growing. the research of the wheel-rail noise,as the main source ofrailway noise, is particularly important.Wheel and rail vibration is the main cause ofwheel-rail noise, therefore, the research about the vibration characteristics of wheel-railsystems, can provide a theoretical basis to reduce railway noise pollution.The Beijing-Shanghai high-speed rail used the technology of CRTSⅡballastlesstrack.Trains,running on ballasted track,will result in ballast powder serious consequences oftrack maintenance. Frequently, safety, comfort, and economy are relatively poor.However,ballastless track overcoming these shortcomings, is the development of the high-speedrailway engineering.This paper established the3D finite element entity model of wheel and CRTSⅡballastless track.,used The harmonic response analysis method, and then analyzed thecharacteristics of the vibration response of of Wheel/rail system,got the figures about high-frequency vibration of Wheel/rail system with software MATLAB。This paper launched theresearch at follows:1. Introduced the domestic and abroad research situation of railway vibration noise，andthe railway antivibration-noise reduction measures.2. Supplied a basic introduction of the wheel/rail system high-frequency vibrationanalysis, presented the wheel/rail high frequency-vibration analysis method.3. Established the3D finite element entity model of wheel, analysed its characters ofhigh-frequency vibration.4. Established the3D finite element entity model of CRTSⅡ ballastless track, analysedits characters of high-frequency vibration.5. Presented the conclusion regard to the character of wheel/rail system high-frequencyvibration, and presented some future problems needs to be further studied...