全面摩擦控制下的轮轨相互作用研究

Research on Wheel-rail Interaction Under Comprehensive Control of Wheel-rail Friction

随着重载铁路运量、轴重、编组密度等逐渐增加,轮轨作用增强、钢轨过度磨耗以及轨道结构变形等问题愈发严重,成为制约重载铁路运输进一步发展的瓶颈之一.轮轨全面摩擦控制是解决这类问题的有效方法,对全面摩擦控制下轮轨的相互作用进行研究,是合理化开展轮轨全面摩擦控制的前提.通过建立多体动力学模型,分析了轨顶面摩擦系数和轨距面摩擦系数变化条件下对轮轨横向力、钢轨磨耗以及脱轨系数的影响,结果表明,轨顶面摩擦系数应该控制于0.25~0.35之间,轨距面摩擦系数应控制于0.2 ~0.3之间.

With the increase of heavy haul railway traffic volume,shaft weight,marshalling densiU and SO on,the increase of the wheel.rail interaction.the exeessive wear of rail and the deformation of rail structure become more and more serious,which turns into one of the bottlenecks restricting the further development of heavy haul railway transportation.The comprehensive control of wheel.rail friction iS an effective way to Solve such problems.Study of the wheel—rail interaction under the comprehensive control of wheel—rail friction is the precondition of rationalizing wheel··rail comprehensive friction contr01.The multi.body dynamics modeliS established in this paper to analyze the influenees on the wheel—raillateral force,rail weal-and derailment COecient under the eondilion that the top rail surface’s friction coefficient and the side rail surface’S friction coefficient change.The results show that the friction coefficient of the top rail surface should be controlled at O.25~O.35.the friction coefficient of the side rail surface should be controlled at 0.2~O.3.