考虑弹流润滑作用的斜齿轮啮合分析方法研究

摘要

EHL (Elastohydrodynamic Lubrication)of film is extremely significant in the process of gear transmission,in order to get the response analysis with effect of film lubrication,three steps were adopted here.First,the gear contact stiffness between mating surfaces was extracted from the static results based on ABAQUS/STANDARD.Second,the composite stiffness was obtained by combining the contact stiffness and the film stiffness.Finally,both static and dynamic FEM results were achieved by using the composite stiffness as the surface interaction behavior between the mating surfaces.Besides, the discontinuous phenomenon of the contact area was also studied.It is said that the maximum contact stress decreases about 30% when considering the effect of film lubrication,and the maximum tension stress in the tooth root drops 6.14%.This method may provide a basis for gear dynamics and optimal design.%油膜弹流润滑在齿轮传动中有着非常重要的作用，为得到油膜润滑作用下的齿轮啮合响应，基于ABAQUS/STANDARD 的静态计算结果，首先提取了仅有齿轮啮合的齿面接触刚度，再结合油膜刚度得到了齿轮和油膜的综合接触刚度，并以此综合刚度作为接触属性关系进行齿轮的静动态运动响应计算。此外，对齿轮啮合时出现的接触区域(接触斑)不连续现象也进行了分析。最终结果表明考虑油膜润滑作用时，齿轮面的最大接触应力比无润滑作用时下降了30%左右，而齿根处最大拉应力则下降了6.14%。本方法为齿轮动力学分析和齿轮的优化设计提供了基础条件。