摩擦学
材料科学
气缸体
活塞(光学)
润滑
空化
圆柱
摩擦学
V形(解剖学)
纹理(宇宙学)
复合材料
机械工程
光学
机械
地质学
工程类
人工智能
波前
古生物学
物理
图像(数学)
计算机科学
作者
Luanxia Chen,Lizhi Shang,Qingqing Wang,Swarnava Mukherjee,Yukui Cai,Bing Wang
出处
期刊:Journal of tribology
[ASME International]
日期:2022-11-17
卷期号:145 (3)
被引量:1
摘要
Abstract The cylinder block/valve plate interface is one of the major power loss sources and main failure points in axial piston pumps and motors. Surface micro-texture has been proven to be an effective approach to reduce friction and wear in many tribological applications. In the present paper, the effect of micro-texture on the tribological and lubricating performance of the important cylinder block/valve plate interface is studied experimentally and numerically. The experimental investigation was conducted on a disk-on-disk tribometer with similar geometry, operating speed, material, and working fluid to the cylinder block/valve plate interface in the axial piston pump. The tribological test results confirmed the chevron micro-texture's potential to reduce frictional loss in such lubricating interface. Furthermore, a novel numerical method coupling the dynamic loading, squeeze motion, analytical pressure deformation, mixed friction, and cavitation was proposed to study the lubricating performance of micro-textured valve plate/cylinder block interface. This model was then validated comparing to the tribometer experimental results and was used to study the effect of depths, widths, and distances of chevron micro-textures on the lubrication performance of cylinder block/valve plate interface. The results found that the depth of the chevron micro-textures affected whether the cavitation occurred inside the micro-texture, the width of the chevron micro-texture affected the size of the cavitation area that occurred in the micro-textures, and the chevron micro-texture distance affected the size of the convergence zone where positive pressure generated.
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