Abstract Numerical models for barrel-shaped rings with four textures were established using MATLAB and the corresponding specimens were fabricated by laser surface texturing. The performance was compared both theoretically and experimentally in order to investigate the effects of geometrical characteristics. The results of the theoretical analysis indicated that a microdimple texture on both sides of the ring surface was a suitable option to improve the lubricating property due to the “collective’’ effect, thus reducing friction of the piston ring. This result was confirmed experimentally. The microdimple texture at the crowning of the ring face weakened the hydrodynamic pressure effect and increased friction, as demonstrated by both theoretical and experimental results.

中文翻译：

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活塞环局部激光表面纹理化减摩仿真与实验研究

摘要 利用MATLAB建立了具有四种纹理的桶形环的数值模型，并通过激光表面纹理加工制作了相应的试样。为了研究几何特性的影响，从理论上和实验上比较了性能。理论分析结果表明，由于“集体”效应，环表面两侧的微凹痕纹理是提高润滑性能的合适选择，从而减少活塞环的摩擦。这一结果得到了实验证实。正如理论和实验结果所证明的那样，环面隆起处的微凹坑纹理削弱了流体动压效应并增加了摩擦。