耦合三维粗糙度参数 Sdr、Sdq、Spd、Spc 和特征函数的三维粗糙表面形貌数值模拟新方法

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-08-14 DOI:10.1016/j.triboint.2024.110117

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引用次数: 0

摘要

现有基于随机过程理论的表面形貌建模方法难以实现 ISO25178 中与零件摩擦和润滑性能相关的三维粗糙度参数 Sdr、Sdq、Spd 和 Spc 的耦合。本文提出了随机切换过程中高度矩阵离散点空间特征结构的约束条件，并通过改进的随机切换系统实现了参数 Sdr、Sdq、Spd 和 Spc 与特征函数的精确耦合。应用新方法对四种精加工表面形貌进行了数值模拟，结果表明这四个参数的相对误差从 5-110 % 有效降低到 1 %。

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A new numerical simulation method of 3D rough surface topography with coupling 3D roughness parameters Sdr, Sdq, Spd, Spc, and characteristic functions

The existing surface topography modeling methods based on random process theory make it difficult to realize the coupling of three-dimensional roughness parameters Sdr, Sdq, Spd, and Spc in ISO25178, which are related to the friction and lubrication performance of parts. The paper proposes constraints set for the structure of spatial features in height matrix discrete points during the random switching process, and the accurate coupling of parameters Sdr, Sdq, Spd, and Spc with characteristic functions is achieved by the improved random switching system. The new method is applied to simulate four kinds of finishing surface topography numerically, and the results show that the relative errors of these four parameters are effectively reduced from 5–110 % to 1 %.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.