Reference : Finite deformations govern the anisotropic shear-induced area reduction of soft elast...

	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Civil engineering Engineering, computing & technology : Computer science Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Mechanical engineering Engineering, computing & technology : Multidisciplinary, general & others
	Focus Areas :	Physics and Materials Science; Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/43469

Title :	Finite deformations govern the anisotropic shear-induced area reduction of soft elastic contacts
Language :	English
Author, co-author :	Lengiewicz, Jakub [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit > ; Institute of Fundamental Technological Research of the Polish Academy of Sciences (IPPT PAN)]
	de Souza, Mariana [Univ Lyon > Ecole Centrale de Lyon, ENISE, ENTPE, CNRS > Laboratoire de Tribologie et Dynamique des Systemes LTDS]
	Lahmar, Mohamed A. [Univ Lyon > Ecole Centrale de Lyon, ENISE, ENTPE, CNRS > Laboratoire de Tribologie et Dynamique des Systemes LTDS]
	Courbon, Cédric [Univ Lyon > Ecole Centrale de Lyon, ENISE, ENTPE, CNRS > Laboratoire de Tribologie et Dynamique des Systemes LTDS]
	Dalmas, Davy []
	Stupkiewicz, Stanislaw [Institute of Fundamental Technological Research of the Polish Academy of Sciences (IPPT PAN)]
	Scheibert, Julien [Univ Lyon > Ecole Centrale de Lyon, ENISE, ENTPE, CNRS > Laboratoire de Tribologie et Dynamique des Systemes LTDS]
Publication date :	Oct-2020
Journal title :	Journal of the Mechanics and Physics of Solids
Publisher :	Elsevier
Volume :	143
Pages :	104056
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	0022-5096
City :	Oxford
Country :	United Kingdom
Keywords :	[en] Contact mechanics ; Friction ; Contact area ; Elastomer ; Full-field measurement
Abstract :	[en] 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 high-load 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 anisotropic shear-induced area reduction, local contact lifting being the dominant one. We confirm experimentally the relevance of all those mechanisms, by tracking the shear-induced evolution of tracers inserted close to the surface of a smooth elastomer sphere in contact with a smooth glass plate. Our results suggest that finite deformations are an alternative to adhesion, when interpreting a variety of sheared contact experiments involving soft materials.
Funders :	European Commission - EC
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/10993/43469
DOI :	10.1016/j.jmps.2020.104056
Other URL :	http://www.sciencedirect.com/science/article/pii/S0022509620302908
Mentions required by the publisher for OA :	CC BY 4.0
Framework Programme / European Project :	H2020 ; 800150 - MOrPhEM - Mechanics of Programmable Matter

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