喷撒颗粒的增粘机理研究  

On Mechanism of Improving Wheel/Rail Adhesion by Way of Spraying Granules

作　　者：孙琼[1] 臧其吉[1] 

机构地区：[1]铁道部科学研究院

出　　处：《中国铁道科学》2000年第4期44-50,共7页China Railway Science

基　　金：国家自然科学基金重点资助项目!项目号 :593381 4 0

摘　　要：本文建立了向轮轨接触间喷撒颗粒时的摩擦模型 ,并将此摩擦模型应用于修正的轮轨粘着理论中 ,对喷撒颗粒的增粘机理进行了理论研究。从理论计算结果可以看出 ,向轮轨接触间喷撒颗粒的增粘效果是非常明显的 ,且增粘效果与轮轨的表面状态、颗粒的质量和进入轮轨接触面间的颗粒数量有关。In this paper,a friction model has been founded in the case of spraying granules to wheel/rail contact surface.And then the mechanism of improving wheel/rail adhesion in the case of spraying granules to wheel/rail contact surface has been investigated by combining the friction model with the modified wheel/rail adhesion theory.The theory results show that such method of improving wheel/rail adhesion is very effective and the effectiveness of such method depends upon the state of wheel/rail contact surface,the granules quality and the number of granules entered wheel/rail contact surface.

关 键 词：喷撒颗粒 增粘机理 轮轨粘着理论 铁路 摩擦模型 

分 类 号：U211.5[交通运输工程—道路与铁道工程]