双面纹理匹配对往复式接触界面摩擦和磨损性能的影响

IF 5.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Wear Pub Date : 2024-07-27 DOI:10.1016/j.wear.2024.205522
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引用次数: 0

摘要

随着重型柴油发动机对减少摩擦和耐磨性的要求越来越高,气缸套和活塞环往复接触区(CLPR)的表面纹理设计一直是关注的重点。通过优化双面纹理 CLPR 的正交试验,与未纹理表面相比,双面纹理 CLPR 的摩擦系数最大降低了 12.63%,气缸套和活塞环的磨损深度也分别相应降低了 16.73% 和 18.25%。在滑动接触区域,CLPR 微纹理之间的相对位置变化造成了不同的应力值和应力分布。与较差的双面纹理 CLPR 相比,较好的双面纹理 CLPR 具有较低的应力集中和在接触区域内的对称分布,可产生更光滑、更平整的磨损平台和无剥落的凹陷边缘,磨损更少。这为重载条件下双面 CLPR 表面的匹配设计提供了一些启示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of double-sided textures matching on friction and wear performance in reciprocating contact interface

With increasing demands for friction reduction and wear resistance in heavy-duty diesel engines, the design of surface textures in reciprocating contact zone of the cylinder liner and piston ring (CLPR) has been a major concern. Through designed orthogonal tests for optimizing the double-sided textured CLPR, a maximum reduction in the friction coefficient of 12.63 % was achieved for the superior double-sided textured CLPR compared to the untextured surface, with corresponding reductions in the wear depth of the cylinder liner and piston ring of 16.73 % and 18.25 %, respectively. The relative position variation between the CLPR microtextures at the sliding contact area caused different stress values and stress distribution. Compared to the inferior double-sided textured CLPR, superior double-sided textured CLPR with lower stress concentration and symmetrical distribution within the contact area generated smoother and flatter worn platforms and non-spalling dimple edges with less abrasive wear. It can provide some insight into the matching design of double-sided CLPR surfaces under heavy load conditions.

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来源期刊
Wear
Wear 工程技术-材料科学:综合
CiteScore
8.80
自引率
8.00%
发文量
280
审稿时长
47 days
期刊介绍: Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.
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