完整的车辆—轨道系统动力学研究是铁路发展的迫切需要(2)  

Active Demand for Railway Developments to Conduct the Dynamic Research on Full Vehicle-track System

作　　者：陈泽深[1] 王成国[2] 

机构地区：[1]铁道科学研究院机辆所,北京100081 [2]铁道科学研究院研发中心,北京100081

出　　处：《铁道机车车辆》2004年第4期15-19,共5页Railway Locomotive & Car

摘　　要：Along with the increasing velocity and high speed development of railway,many questions have emerged,such as the aggravating abrasion in vehicle-track system,fatigue failure in key components,as well as the noises etc.After summarizing pinety of technique literatures,it′s found that dynamic research of vehicle-track system in high,intermediate and low frequency spectrum must be carried out.Only suing the traditional methods and without analyzing the essentiality of problems,these rising questions will not be solved reasonably.Rolated theories and experiments show that,by the difference of excitation and wavelength the complete vehicle-track system dynamics should be divided into three frequency spectrums:high,intermediate and low frequency respectively.According to the character and frequency of the three different speetrums,the dynamic model can be set up to meet the research requirements and can be solved using appropriate mathematic technique.In this way,full vehicle-track system dynamic research can be conducted based on the system frequency character.And reasonable model can be developed,which is significant to develop the high-speed railways.Along with the increasing velocity and high speed development of railway,many questions have emerged,such as the aggravating abrasion in vehicle-track system,fatigue failure in key components,as well as the noises etc.After summarizing pinety of technique literatures,it′s found that dynamic research of vehicle-track system in high,intermediate and low frequency spectrum must be carried out.Only suing the traditional methods and without analyzing the essentiality of problems,these rising questions will not be solved reasonably.Rolated theories and experiments show that,by the difference of excitation and wavelength the complete vehicle-track system dynamics should be divided into three frequency spectrums:high,intermediate and low frequency respectively.According to the character and frequency of the three different speetrums,the dynamic model can be set up to meet the research requirements and can be solved using appropriate mathematic technique.In this way,full vehicle-track system dynamic research can be conducted based on the system frequency character.And reasonable model can be developed,which is significant to develop the high-speed railways.

关 键 词：车辆—轨道系统 动力学研究 铁路 噪声 振动 

分 类 号：U260.111[机械工程—车辆工程]