高速列车载荷频率传递特性研究  

Research on the transference characteristics of loads frequencies of high-speed vehicle

作　　者：刘永乾[1] 任尊松[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《振动工程学报》2013年第5期687-692,共6页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51175032;U1134201);"973"国家高科技研究与开发项目资助(211CD711104)

摘　　要：随着列车运行速度不断提高,轮轨激振力引起的列车结构振动问题越来越明显。利用SIMPACK多体动力学软件和ANSYS有限元软件,分别建立了车辆多刚体系统动力学模型和转向架弹性体模型。在两种模型上分别施加京津线激扰,得到了车辆多刚体系统高速直线工况轮轨激振力;将该激振力施加于ANSYS弹性体模型并对其进行瞬态动力学分析,得到了弹性转向架一系和二系悬挂载荷、构架应力时间历程、频谱特性及系统频率传递规律。研究结果表明:轮轨力载荷经一系和二系悬挂系统传递至车体时,频率成分发生了明显的衰减,但高速运行时构架将产生一定程度的弹性振动;线路实测转向架载荷信号时域和频域分析结果,初步验证了所研究结果的正确性。With the continuous increase of the operation speed of the high speed train in China,the structural vibration problems caused by wheel-rail excitation force become more and more heavy.In the paper,the multiple rigid-body system dynamics model and elastic-body model of the bogie are built via SIMPACK and ANSYS,respectively.Wheel-rail forces of the vehicle multiple rigid-body system under Jingjin line track excitation is calculated and which are introduced to the elastic-body model for carring out the transient dynamic analysis in ANSYS.Time histories of suspension system loads and stress of elastic-body bogie are simulated.The frequency spectrum characteristics and transference principles of the system are obtained.The results show that the range of the frequency of the car body is lowered when the wheel-rail force transfers from the wheel-rail interface to the car body after the primary and secondary suspension system attenuation.Elastic vibration of the bogie frame occurs when the vehicle runs on high-speed and field test data are introduced to verify the researcher results presented in this paper preliminary.

关 键 词：高速列车 高频振动 振动传递 瞬态动力学分析 线路试验 

分 类 号：U270.1[机械工程—车辆工程]