摘要
以刚性架悬、弹性架悬和半体悬高速动力车为研究对象分别建立动力学分析模型,对它们的横向稳定性进行对比分析研究。另外,针对设计方案中高速动力车低速运行时轮对横向振动出现小幅度的极限环振动问题,分析了3种高速动力车横向稳定性对一系纵向刚度变化的敏感性。结果表明半体悬高速动力车的非线性临界速度最高,刚性架悬高速动力车的非线性临界速度最低,弹性架悬高速动力车的非线性临界速度居中;3种高速动力车的非线性临界速度都会随着一系纵向刚度的增大而减小,刚性架悬和弹性架悬机车在低速运行时轮对横向振动的极限环振幅随着一系纵向刚度的增大会有所增大。
Dynamic models of high-speed power trains with rigid suspension,flexible suspension and semi-body suspension were established respectively,the lateral stability of which was compared and analyzed in this paper.In addition,aiming at high-speed power trains in the design during low speed running wheelsets on transverse vibration appear a small limit cycle vibration,the degree of sensitivity of lateral stability of high-speed power car to the change in the primary longitudinal stiffness.It was showed that the high-speed power car with semi-body suspension had the highest nonlinear critical speed,the high-speed power car with rigid suspension had the lowest nonlinear critical speed,the nonlinear critical speed between the two suspension mode is the high-speed power car with flexible suspension.All of the high-speed power cars' nonlinear critical speed will be decreased with primary longitudinal stiffness increases.When the high-speed power car with rigid suspension or flexible suspension is running at a low speed the limit cycle amplitude of wheelsets' lateral vibration will be increased with primary longitudinal stiffness increases.
出处
《铁道机车车辆》
北大核心
2018年第1期62-65,共4页
Railway Locomotive & Car
关键词
驱动装置悬挂方式
横向稳定性
非线性临界速度
极限环振幅
一系纵向刚度
driving device's suspension type
lateral stability
nonlinear critical speed
limit cycle amplitude
primary longitudinal stiffness
