Contact with coupled adhesion and friction: Computational framework, applications, and new insights

Published on Jan 1, 2021in Journal of The Mechanics and Physics of Solids5.471
路 DOI :10.1016/J.JMPS.2020.104194
Janine C. Mergel5
Estimated H-index: 5
,
Julien Scheibert21
Estimated H-index: 21
(ECL: 脡cole centrale de Lyon),
Roger A. Sauer26
Estimated H-index: 26
Sources
Abstract
Contact involving soft materials often combines dry adhesion, sliding friction, and large deformations. At the local level, these three aspects have been simultaneously captured only in the theoretical framework proposed by Mergel et al. (2019) (arXiv:1803.00046). We here develop a corresponding, nonlinear finite element framework that captures 3D finite-strain contact of two deformable bodies. This framework includes the two models by Mergel et al. (2019), and is suitable to investigate sliding friction even under tensile normal loads. First, we investigate our finite element model in test cases covering both 2D and 3D, ranging from compliant tapes to structures with high stiffness, and including deformable-rigid and deformable-deformable contact. We then provide new results on the onset of sliding of smooth elastomer-glass interfaces, which couples nonlinear material behavior, adhesion, and large frictional stresses. Our simulations not only agree well with both experimental and theoretical findings, they also provide new insights into the current debate on the shear-induced reduction of the contact area in elastomeric contact.
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References79
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#1Antonio Papangelo (IPN: Instituto Polit茅cnico Nacional)H-Index: 16
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Abstract The interaction between contact area and frictional forces in adhesive soft contacts is receiving much attention in the scientific community due to its implications in many areas of engineering such as surface haptics and bioinspired adhesives. In this work, we consider a soft adhesive sphere that is pressed against a rigid substrate and is sheared by a tangential force where the loads are transferred to the sphere through a normal and a tangential spring, representing the loading appar...
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#1Jakub Lengiewicz (PAN: Polish Academy of Sciences)H-Index: 12
#2M. de Souza (ECL: 脡cole centrale de Lyon)H-Index: 1
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Solid contacts involving soft materials are important in mechanical engineering or biomechanics. Experimentally, such contacts have been shown to shrink significantly under shear, an effect which is usually explained using adhesion models. Here we show that quantitative agreement with recent experiments can be obtained, with no adjustable parameter, using a non-adhesive model, provided that finite deformations are taken into account. Analysis of the model uncovers the basic mechanisms underlying...
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#1Jianjun Wang (Zhongyuan University of Technology)H-Index: 11
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Using molecular dynamics (MD) we study the dependency of the contact mechanics on the sliding speed when an elastically soft slab (block) is sliding on a rigid substrate with a {\rm sin} (q_0 x)surface height profile. The atoms on the block interact with the substrate atoms by Lennard-Jones potentials. We consider contacts with and without adhesion. We found that the contact area and the friction force are nearly velocity independent for small velocities (v < 0.25 \ {\rm m/s} in spite of t...
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#1Julien Scheibert (ECL: 脡cole centrale de Lyon)H-Index: 21
#2Riad Sahli (ECL: 脡cole centrale de Lyon)H-Index: 5
Last. Michel Peyrard (脡cole normale sup茅rieure de Lyon)H-Index: 52
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Modelling of rough frictional interfaces is often based on asperity models, in which the individual behaviour of individual microjunctions is assumed. In the absence of local measurements at the microjunction scale, quantitative comparison of such models with experiments is usually based only on macroscopic quantities, like the total tangential load resisted by the interface. Recently however, a new experimental dataset was presented on the onset of sliding of rough elastomeric interfaces, which...
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#1Robert M. McMeekingH-Index: 81
#2Michele Ciavarella (IPN: Instituto Polit茅cnico Nacional)H-Index: 40
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How friction affects adhesion is addressed. The problem is considered in the context of a very stiff sphere adhering to a compliant, isotropic, linear elastic substrate, and experiencing adhesion and frictional slip relative to each other. The adhesion is considered to be driven by very large attractive tractions between the sphere and the substrate that can act only at very small distances between them. As a consequence, the adhesion behavior can be represented by the Johnson-Kendall-Roberts mo...
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#1Janine C. Mergel (RWTH Aachen University)H-Index: 5
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ABSTRACTWe develop two new continuum contact models for coupled adhesion and friction, and discuss them in the context of existing models proposed in the literature. Our new models are able to desc...
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#1M. Khajeh Salehani (TU Delft: Delft University of Technology)H-Index: 4
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Abstract Experiments show that when an adhesive contact is subjected to a tangential load the contact area reduces, symmetrically or asymmetrically, depending on whether the contact is under tension or compression. What happens after the onset of sliding is more difficult to be assessed because conducting experiments is rather complicated, especially under tensile loading. Here, we provide through numerical simulations, a complete picture of how the contact area and tractions of an adhesive circ...
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#1Antonio Papangelo (IPN: Instituto Polit茅cnico Nacional)H-Index: 16
#2Julien Scheibert (ECL: 脡cole centrale de Lyon)H-Index: 21
Last. Michele Ciavarella (IPN: Instituto Polit茅cnico Nacional)H-Index: 40
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This paper gives a theoretical analysis for the fundamental problem of anisotropy induced by shear forces on an adhesive contact, discussing the experimental data of the companion Letter. We present a fracture mechanics model where two phenomenological mode-mixity functions are introduced to describe the weak coupling between modes I and II or I and III, which changes the effective toughness of the interface. The mode-mixity functions have been interpolated using the data of a single experiment ...
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#1Riad Sahli (ECL: 脡cole centrale de Lyon)H-Index: 5
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True contact between randomly rough solids consists of myriad individual micro-junctions. While their total area controls the adhesive friction force of the interface, other macroscopic features, including viscoelastic friction, wear, stiffness and electric resistance, also strongly depend on the size and shape of individual micro-junctions. Here we show that, in rough elastomer contacts, the shape of micro-junctions significantly varies as a function of the shear force applied to the interface....
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Gecko has the ability to climb flexibly on various natural surfaces because of its fine layered adhesion system of foot, which has motivated researchers to carry out a lot of researches on it. Significant progresses have been made in the gecko-like dry adhesive surfaces in the past 2 decades, such as the mechanical measurement of adhesive characteristics, the theoretical modeling of adhesive mechanism and the production of synthetic dry adhesive surfaces. Relevant application researches have bee...
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#1Antonio Papangelo (IPN: Instituto Polit茅cnico Nacional)H-Index: 16
Adhesion and, its interplay with friction, is central in several engineering applications involving soft contacts. Recently, there has been an incredible push towards a better understanding on how the apparent contact area evolves when a shear load is applied to an adhesive soft contact, both experimentally and theoretically. Although soft materials are well-known to exhibit rate-dependent properties, there is still a lack of understanding in how the loading rate could affect the contact area sh...
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