论文部分内容阅读
本文以金属滑动摩擦副为研究对象,根据统计等效的观点,推导了粗糙表面滑动摩擦副的能量方程和雷诺方程,对粗糙表面金属滑动摩擦副的热流体动力性能进行了分析。研究了粗糙表面的纹理方向和相对滑动速度对混合润滑工况金属滑动摩擦副的摩擦系数、承载能力和温度分布的影响,其中考虑了局部区域的表面膜丧失对摩擦副润滑性能的影响。研究结果表明:粗糙表面纹理方向、粗糙度参数β对摩擦副的润滑性能有较大的影响。局部表面膜的丧失对摩擦系数具有很大影响,在相同的无量纲间隙时,较大的相对滑动速度对应着较大的摩擦系数。实验和理论结果之间具有较好的一致性,说明本文所提供的分析软件和方法是可行的。
In this paper, the metal sliding friction pair is taken as the research object. According to the statistical equivalent point of view, the energy equation and the Reynolds equation of the sliding friction pair on the rough surface are deduced. The hydrodynamic performance of the metal sliding friction pair on the rough surface is analyzed. The effects of grain orientation and relative sliding velocity of rough surface on the friction coefficient, bearing capacity and temperature distribution of metal sliding friction pair under mixed lubrication conditions were studied. The influence of local film loss on the lubrication performance of friction pair was considered. The results show that the direction of the rough surface texture and the roughness parameter β have a great influence on the lubricity of the friction pair. The loss of the partial surface membrane has a great influence on the coefficient of friction. At the same dimensionless gap, the larger relative sliding velocity corresponds to a larger coefficient of friction. The good agreement between the experimental and theoretical results indicates that the analysis software and methods provided in this paper are feasible.