低速大扭矩水压马达配流副仿生凹坑形非光滑表面流场分析

发布时间：2018-04-16 10:00

本文选题：低速大扭矩水压马达 + 仿生非光滑表面　；参考：《机床与液压》2017年09期

【摘要】：通过在低速大扭矩水压马达配流盘上设计了不同凹坑形仿生非光滑表面,并建立配流副的全水动压润滑模型,采用CFD方法研究了凹坑的不同开口形状和截面形状对内部液体流动的影响及其对流体动压润滑性能的影响规律。结果表明:在凹坑截面形状、开口尺寸及凹坑深度相同的情况下,开口形状为圆形的凹坑形仿生非光滑表面的液膜表面压力分布情况要略好于开口形状为正方形和三角形的凹坑形仿生非光滑表面的液膜表面压力分布情况;凹坑开口形状都为圆形时,截面形状为半圆形的半球坑与截面形状为矩形的圆形柱坑、截面形状为三角形的圆形锥坑相比,其液膜表面压力分布情况较好,液膜表面承载力略大,流体动压润滑性能较好。
[Abstract]:By designing different pit shape bionic non-smooth surfaces on the low speed and high torque hydraulic motor distributor, the full hydrodynamic lubrication model of the distribution pair is established.The effects of different opening shapes and cross-section shapes of pits on internal liquid flow and its influence on hydrodynamic lubrication performance were studied by CFD method.The results show that when the shape of the section, the size of the opening and the depth of the pit are the same,The pressure distribution on the surface of bionic non-smooth surface with circular concave shape is slightly better than that on the surface of bionic non-smooth surface with square and triangular opening shapes.When the opening shapes of the pits are circular, the surface pressure distribution of the hemispherical pits with a semicircular section is better than that of a circular cylindrical pit with a rectangular section and a circular conical pit with a triangular section, and the pressure distribution on the surface of the liquid film is better than that of the circular conical pit with a triangular section.The surface bearing capacity of liquid film is slightly larger, and the hydrodynamic lubrication performance is better.
【作者单位】：燕山大学机械工程学院;
【基金】：河北省自然科学基金资助项目(E2015203006)
【分类号】：TH137.51

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