１引言车轴是所有机车车辆零部件中最重要的零件之一，其质量好坏直接影响行车安全。高速动力车运行速度快，国家下达的设计任务规定：最高运行速度２５０ｋｍ／ｈ，试验速度２８０ｋｍ／ｈ，为减轻轮轨之间的动作用力，要尽量减轻车轴质量，尤其是簧下质量。在充分考虑我... 1 Introduction Axle is one of the most important parts of all rolling stock parts, the quality of a direct impact on traffic safety. High-speed electric car running fast, the state issued the design mission: the maximum operating speed of 250km / h, the test speed of 280km / h, in order to reduce the movement between wheel and rail force, to minimize the axle quality, especially the unsprung mass. Taking full account of me ...