Simulation and analysis of micro-textured rough curved surface based on fractal characterization method

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL Industrial Lubrication and Tribology Pub Date : 2024-02-09 DOI:10.1108/ilt-09-2023-0298

Chunxia Zhu, Xianling Meng

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Abstract

Purpose

Micro-texture is processed on the surface to reduce the friction of the contact surface, and its application is more and more extensive. The purpose of this paper is to create a texture function model to study the influence of surface parameters on the accuracy of the simulated surface so that it can more accurately reflect the characteristics of the real micro-textured surface.

Design/methodology/approach

The microstructure function model of rough surfaces is established based on fractal geometry and polar coordinate theory. The offset angle θ is introduced into the fractal geometry function to make the surface asperity normal perpendicular to the tangent of the surface. The 2D and 3D contour surfaces of the surface groove texture are analyzed by MATLAB simulation. The effects of fractal parameters (D and G) and texture parameter h on the curvature of the surface micro-texture model were studied.

Findings

This paper more accurately characterizes the textured 3D curved surface, especially the surface curvature. The scale coefficient G significantly affects curvature, and the influence of fractal dimension D and texture parameters on curvature can be ignored.

Originality/value

The micro-texture model of the rough surface was successfully established, and the range of fractal parameters was determined. It provides a new method for the study of surface micro-texture tribology.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-09-2023-0298/

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基于分形表征法的微纹理粗糙曲面仿真与分析

目的微纹理是对表面进行加工以减小接触面的摩擦力，其应用越来越广泛。本文的目的是创建纹理函数模型，研究表面参数对模拟表面精度的影响，使其能更准确地反映真实微纹理表面的特征。设计/方法/途径基于分形几何和极坐标理论建立粗糙表面的微结构函数模型。在分形几何函数中引入偏移角θ，使表面粗糙度法线垂直于表面切线。通过 MATLAB 仿真分析了表面凹槽纹理的二维和三维轮廓曲面。研究了分形参数（D 和 G）和纹理参数 h 对表面微纹理模型曲率的影响。研究结果本文更准确地描述了纹理三维曲面的特征，尤其是曲面曲率。尺度系数 G 对曲率有明显影响，分形维数 D 和纹理参数对曲率的影响可以忽略。同行评议本文的同行评议记录见：https://publons.com/publon/10.1108/ILT-09-2023-0298/。

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.