一、前言随着内燃机强化程度的不断提高并日益向高速,大马力发展,轴瓦的工作条件也愈益苛刻,疲劳损坏就成了轴瓦失效的一个主要限制因素,轴瓦减磨层的疲劳损伤,往往决定着发动机的寿命。影响轴瓦疲劳强度的因素是很多的,也很复杂,不但与轴瓦材料的物理性能及其固有疲劳强度有关,而且还受实际加工状况和工作条件等多种因素的影响,如;载荷的特征及 I. INTRODUCTION As the intensified degree of internal combustion engine continues to improve and increasingly develops at high speed and high horsepower, the working conditions of bearing bush are also increasingly harsh. Fatigue damage has become a major limiting factor for bearing bush failure. Determine the life of the engine. The factors that affect the fatigue strength of the bearing bush are many and complicated, which are not only related to the physical properties of the bearing bush material and its inherent fatigue strength, but also influenced by many factors such as the actual machining conditions and working conditions, such as the characteristics of the load and