圆柱踏面车轮沿环形平面轨道运行时的切向应力研究  

Research on tangential stress of cylindrical tread wheel running along circular plane track

作　　者：张再斌 屈福政[1] 祝德强 韩成军 Zhang Zaibin;Qu Fuzheng;Zhu Deqiang;Han Chengjun

机构地区：[1]大连理工大学机械工程学院,大连116024 [2]大连华锐重工集团股份有限公司,大连116052

出　　处：《起重运输机械》2022年第19期30-36,共7页Hoisting and Conveying Machinery

摘　　要：圆柱踏面车轮沿环形平面轨道运行时,轮轨接触区域由于存在速度差,会产生蠕滑现象,并伴有切应力。研究这种轮轨接触切向应力的产生机理,对准确分析车轮的转向阻力矩和轮轨磨损至关重要。文中提出了一种轮轨接触的简化模型,分析得到了滑移黏着分界点以及车轮转向阻力矩的简化计算公式。有限元仿真结果表明,所建立的简化接触模型可以较准确的反应接触点的切向应力分布特征,能够得到准确的转向阻力矩结果,为核电站环行起重机及其类似产品的运行阻力计算提供了有价值的参考。When the cylindrical tread wheel runs along the circular plane track,the wheel-rail contact area will produce creep due to the speed difference,accompanied by shear stress.The research on the generation mechanism of this wheel-rail contact tangential stress is of vital importance for the accurate analysis of wheel steering resistance moment and wheel-rail wear.In this paper,a simplified wheel-rail contact model of is proposed,and the simplified calculation formulas of slip adhesion boundary point and wheel steering resistance moment are obtained through analysis.The finite element simulation results show that the simplified contact model can accurately reflect the tangential stress distribution characteristics of the contact point,and can obtain accurate steering resistance torque results,which provides a valuable reference for the running resistance calculation of similar products such as nuclear ring cranes,ring rail cranes,etc.

关 键 词：环形轨道 轮轨接触蠕滑 转向力矩 圆柱踏面 车轮 

分 类 号：TH12[机械工程—机械设计及理论]