摘要
从轮轨关系的角度介绍实心车轴单轮对脱轨的研究现状及脱轨的数字仿真分析。在准静态条件下,在全尺滚动试验台上进行了试验,研究了轮对冲角以及作用于爬轨侧轮缘和非爬轨侧轮缘上的垂向载荷的比率等参数对试验结果的影响。本文在试验结果的基础上,分析了现有的一些评判脱轨的准则,并提出了2个新的评判准则。建立了一个基于爬轨过程的轮轨接触数学模型,并利用数字仿真结果与实测试验的结果对比,验证了该模型的正确性。
The research at present on the derailment of a railway wheelset with solid axle and numerical simulation analysis of derailment are described from the wheel-rail relation. Tests were carried out under quasi-steady-state conditions, on a full-scale roller rig, and allowed to point out the effect of different parameters like the wheelset^s angle of attack and the ratio between the vertical loads acting on the flanging and non-flanging wheels. On the basis of the test results, some existing derailment criteria are analysed in this paper and two new criteria are proposed. A model of wheel-rail contact is proposed for the mathematical modelling of the flange climb process, and numerical vs. experimental comparisons are used to obtain model validation.
出处
《国外铁道车辆》
2010年第2期23-33,共11页
Foreign Rolling Stock
关键词
脱轨
模拟
试验
评判准则
derailment
simulation
test
judgement criteria
