On adhesive contact between spheres with rolling adhesion

IF 3.1 3区 物理与天体物理 Q2 PHYSICS, APPLIED
Zhao-Yang Ma, Jin-Shan He, Gan-Yun Huang and Liao-Liang Ke
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引用次数: 0

Abstract

The tendency of relative motion via rolling between contacting objects exists in various aspects of industry and nature because, in many practical situations, forces and moments may be simultaneously induced at the contacting interfaces. Due to the presence of adhesion, which may be prominent on small scales, research on contacts with the tendency to roll, termed herein as rolling adhesion, is very limited. In the present work, a novel double-Hertz model is developed for adhesive contact between spherical objects subjected to the combined action of normal forces and moments. The results from the new model agree well with available numerical simulations and experimental results. It has been demonstrated that the contact behavior with the effect of rolling adhesion seemingly resembles that of conventional adhesive contact, but the applied moment may impact the pull-off force and may even induce novel contact instability if large enough. The resistance moment at the interface has also been obtained analytically, which is proportional to adhesion hysteresis and contact area. Given the applicability to the full range of the Tabor parameter and nonsingular stresses involved, these results might shed light on adhesive contacts with rolling adhesion and help to characterize them better than existent models.
关于具有滚动粘附力的球体之间的粘附接触
接触物体之间通过滚动产生相对运动的趋势存在于工业和自然界的各个方面,因为在许多实际情况下,接触界面可能会同时产生力和力矩。由于粘附力的存在,它在小尺度上可能很突出,因此对具有滚动趋势的接触(在此称为滚动粘附力)的研究非常有限。本研究针对受到法向力和力矩共同作用的球形物体之间的粘附接触,建立了一个新颖的双赫兹模型。新模型的结果与现有的数值模拟和实验结果非常吻合。研究表明,滚动粘附效应的接触行为似乎与传统的粘附接触行为相似,但施加的力矩可能会影响拉拔力,如果力矩足够大,甚至会诱发新的接触不稳定性。界面上的阻力矩也是通过分析得到的,它与粘滞和接触面积成正比。鉴于这些结果适用于全部范围的 Tabor 参数和所涉及的非正弦应力,因此可能会对具有滚动粘附力的粘合接触有所启发,并有助于比现有模型更好地描述其特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics 物理-物理:应用
CiteScore
6.80
自引率
8.80%
发文量
835
审稿时长
2.1 months
期刊介绍: This journal is concerned with all aspects of applied physics research, from biophysics, magnetism, plasmas and semiconductors to the structure and properties of matter.
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