摩擦副表面沟槽型织构润滑性能的数值仿真

从目前的研究来看,织构的深度和载荷对油膜的润滑性能具有显著的影响,然而,在载荷变化的情况下,润滑膜的最小膜厚和黏性阻力是一个动态变化的过程。因此不同载荷下,最佳织构深度的选取还需系统地进行分析。通过建立沟槽型织构流体润滑模型,分析了织构的深度以及承载力对摩擦副的油膜厚度、压力、剪切力、以及摩擦因数的影响。结果表明:在承载力一定时,油膜厚度随织构深度的增加呈先增大后减小的趋势。在89 N载荷下时,存在最佳油膜厚度6.4184 μm,此时织构深度为2.97 μm,摩擦因数为0.0162。

Numerical Simulation of Lubrication Performance of Groove Texture on Surface of Friction Pairs

View from the current study, the depth of texture and load significantly impact the lubrication performance of oil film. However, when the load changes, the minimum film thickness and viscous resistance of lubrication film are dynamic processes. Therefore, the selection of the best texture depth under different loads needs to be systematically analyzed. By establishing a grooved texture fluid lubrication model, this paper analyzes the effects of texture depth and bearing capacity on oil film thickness, pressure, shear force, and friction coefficient of friction pair. The results show that when the bearing capacity is constant, the oil film thickness increases first and then decreases with the increase of texture depth. Under the condition of 89 N load, there is an optimal oil film thickness of 6.4184 μm. At this time, the texture depth is 2.97 μm and the friction coefficient is 0.0162.