Contact behaviors of rough surfaces under tension and bending

IF 3.8 2区工程技术 Q1 ENGINEERING, MECHANICAL Acta Mechanica Sinica Pub Date : 2024-09-13 DOI:10.1007/s10409-024-24067-x

Xiaoyu Tang (, ), Wurui Ta (, ), Youhe Zhou (, )

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Abstract

The contact problem of deformed rough surfaces exists widely in complex engineering structures. How to reveal the influence mechanism of surface deformation on the contact properties is a key issue in evaluating the interface performances of the engineering structures. In this paper, a contact model is established, which is suitable for tensile and bending deformed contact surfaces. Four contact forms of asperities are proposed, and their distribution characteristics are analyzed. This model reveals the mechanism of friction generation from the perspective of the force balance of asperity. The results show the contact behaviors of the deformed contact surface are significantly different from that of the plane contact, which is mainly reflected in the change in the number of contact asperities and the real contact area. This study suggests that the real contact area of the interface can be altered by applying tensile and bending strains, thereby regulating its contact mechanics and conductive behavior.

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拉伸和弯曲下粗糙表面的接触行为

变形粗糙表面的接触问题广泛存在于复杂的工程结构中。如何揭示表面变形对接触性能的影响机理，是评价工程结构界面性能的关键问题。本文建立了一个适用于拉伸和弯曲变形接触表面的接触模型。提出了四种接触形式的尖角，并分析了它们的分布特征。该模型从尖面受力平衡的角度揭示了摩擦产生的机理。结果表明，变形接触面的接触行为与平面接触的接触行为有显著不同，主要体现在接触表面的渐尖数量和实际接触面积的变化上。这项研究表明，可以通过施加拉伸和弯曲应变来改变界面的实际接触面积，从而调节其接触力学和导电行为。

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来源期刊

Acta Mechanica Sinica 物理-工程：机械

CiteScore

5.60

自引率

20.00%

发文量

1807

审稿时长

4 months

期刊介绍： Acta Mechanica Sinica, sponsored by the Chinese Society of Theoretical and Applied Mechanics, promotes scientific exchanges and collaboration among Chinese scientists in China and abroad. It features high quality, original papers in all aspects of mechanics and mechanical sciences. Not only does the journal explore the classical subdivisions of theoretical and applied mechanics such as solid and fluid mechanics, it also explores recently emerging areas such as biomechanics and nanomechanics. In addition, the journal investigates analytical, computational, and experimental progresses in all areas of mechanics. Lastly, it encourages research in interdisciplinary subjects, serving as a bridge between mechanics and other branches of engineering and the sciences. In addition to research papers, Acta Mechanica Sinica publishes reviews, notes, experimental techniques, scientific events, and other special topics of interest. Related subjects » Classical Continuum Physics - Computational Intelligence and Complexity - Mechanics