基于有限元仿真的磨削纹理对40Cr材料摩擦学特性影响及润滑油匹配

发布时间：2018-05-23 12:26

本文选题：有限元仿真 + 表面纹理　；参考：《表面技术》2017年07期

【摘要】：目的由于磨削粗糙度较小,磨削纹理对材料摩擦学特性的影响常被忽略,故研究磨削表面纹理方向与润滑油的匹配性问题。方法利用有限元仿真研究,分析了工件运动方向与表面纹理方向呈不同夹角(θ=0°、30°、45°、90°)时,对固体间接触面积A和摩擦因数μ的影响,并选择了3种黏度差距较大的润滑油进行了单因素匹配性研究。结果利用有限元仿真模型,获得了不同黏度润滑油润滑时的最佳纹理安装角度。使用32号润滑油润滑,θ=0°(运动方向与纹理方向垂直)时的摩擦因数和接触面积均最小;使用68号润滑油,θ=0°时的摩擦因数最小,而且此时的接触面积也最小;使用150号润滑油时,θ=30°时的摩擦因数最小,此时的接触面积较小。结论表面纹理方向对固体间接触面积的影响主要由润滑油膜连续程度决定,表面纹理方向对摩擦因数的影响由油膜连续程度和固体间接触的阻碍作用双重决定。随着润滑油黏度的增大,表面纹理方向对固体间接触面积和摩擦因数的影响逐渐减小。实际生产中的零件安装,必须关注纹理方向对润滑效果的影响,并注重与润滑油的匹配问题。
[Abstract]:Due to the small roughness of grinding, the influence of grinding texture on tribological properties of materials is often neglected, so the matching problem between the direction of grinding surface texture and lubricating oil is studied. Methods by means of finite element simulation, the effects of different angles of motion direction and surface texture direction (胃 0 掳~ 30 掳~ 45 掳~ 90 掳) on the contact area A and friction coefficient 渭 of the workpiece are analyzed. Three kinds of lubricating oils with large viscosity gap were selected for single factor matching study. Results using finite element simulation model, the optimum texture installation angle of lubricating oil with different viscosity was obtained. When lubricating oil No. 32 is used, the friction coefficient and contact area of 胃 _ 0 掳(vertical direction of movement and texture) are the smallest, and the friction coefficient of 胃 _ 0 掳is the smallest when using No. 68 lubricating oil, and the contact area is also the smallest. When 150 lubricating oil is used, the friction coefficient is the smallest and the contact area is smaller when theta is 30 掳. Conclusion the influence of the direction of surface texture on the contact area between solids is mainly determined by the continuity of lubricating oil film, and the influence of the direction of surface texture on the friction coefficient is determined by the continuity of oil film and the hindrance of contact between solids. With the increase of lubricant viscosity, the effect of surface texture direction on the contact area and friction coefficient between solids decreases gradually. The effect of texture direction on lubricating effect and matching with lubricating oil must be paid attention to in actual production.
【作者单位】：新乡职业技术学院;
【分类号】：TG580.6;TH117.2

【相似文献】