齿轮传动设计中,关于齿轮的接触强度,传统的表层应力计算是建立在赫兹干接触分析基础上的,这与齿轮传动的实际工况颇有差别。本文考虑了动态——瞬态弹流润滑对直齿轮表层应力的影响,经数值计算发现,与干接触情况相比,最大表层当量应力更接近表面,并向出口区偏移,且由于轮齿接触区的压力分布和剪应力分布存在二次峰,表层当量等值应力分布有明显的变化。 In gear drive design, the contact strength of the gear, the traditional calculation of surface stress is based on the Hertzian dry contact analysis, which is quite different from the actual conditions of the gear drive. In this paper, the influence of dynamic-transient EHL lubrication on the surface stress of spur gears is considered. The numerical results show that the maximum surface equivalent stress is closer to the surface than the dry contact and shifts to the exit area, The contact pressure distribution and shear stress distribution of the existence of secondary peaks, surface equivalent equivalent stress distribution changes significantly.