考虑上游泵送效应的滑靴副动压润滑特性

为了改善轴向柱塞泵滑靴副的润滑性能，利用仿生学原理，在斜盘上构建倾斜椭圆形微坑织构. 通过微坑产生的动压效应和上游泵送效应，以期能够优化滑靴副的摩擦性能并减少泄漏量. 基于CFD方法开展了具有椭圆形微坑织构滑靴副的建模与润滑性能研究，揭示了不同润滑介质黏度和转速下柱塞泵滑靴副的承载能力、泄漏量和摩擦系数随微坑倾斜角度的变化规律. 研究结果表明：通过在斜盘面上建立无倾斜椭圆形微坑，能明显提高滑靴副的承载能力，并降低摩擦系数，但会导致泄漏量增大；而在此基础上，通过将椭圆形微坑相对于其滑动方向旋转一定角度，滑靴副的承载能力和摩擦系数不会明显变化，但可以显著减小润滑介质泄漏量.To improve the lubrication performance of the sliding shoe pair in axial piston pumps, tilted elliptical micro-pit textures were fabricated on the swash plate based on bionics principles, aiming to optimize the friction performance of the sliding shoe pair and reduce the leakage rate via the hydrodynamic effect and upstream pumping effect generated by the micro-pits. Modeling and lubrication performance studies of the sliding shoe pair with elliptical micro-pit textures were conducted via the Computational Fluid Dynamics (CFD) method, and the varying patterns of the load-bearing capacity, leakage rate and friction coefficient of the sliding shoe pair in the axial piston pump under different lubricant viscosities and rotational speeds as functions of the micro-pit tilt angle were revealed. The research results indicate that: introducing non-tilted elliptical micro-pits on the swash plate surface can significantly improve the load-bearing capacity of the sliding shoe pair and reduce the friction coefficient, but will lead to an increase in the leakage rate; on this basis, by rotating the elliptical micro-pits at a certain angle relative to their sliding direction, the load-bearing capacity and friction coefficient of the sliding shoe pair will not change significantly, while the leakage rate of the lubricant can be notably reduced.

搜集汇总

背景与挑战

背景概述

该数据集研究了轴向柱塞泵滑靴副的动压润滑特性，重点探讨了上游泵送效应的影响。通过仿生学原理在斜盘上设计倾斜椭圆形微坑织构，利用CFD方法分析不同条件下承载能力、泄漏量和摩擦系数的变化规律。结果表明，无倾斜微坑可提升承载能力和降低摩擦系数但增加泄漏，而倾斜微坑能有效减少泄漏量而不显著改变其他性能。