Computational modeling of surface phenomena in soft-wet materials

TitleComputational modeling of surface phenomena in soft-wet materials
Publication TypeJournal Article
Year of Publication2009
AuthorsI Stanciulescu, JE Dolbow, and S Zauscher
JournalInternational Journal of Solids and Structures
Volume46
Issue6
Start Page1334
Pagination1334 - 1344
Date Published03/2009
Abstract

We consider the problem of extracting tribological information from experimental observations of contact with soft-wet materials. Particular attention is placed on simulating the response of two rotating cylinders of soft specimens placed in frictional contact, with a variable coefficient of friction dependent on the relative sliding velocity. The bulk behavior is modeled by means of a finite deformation viscoelasticity formulation, with constitutive parameters taken to be representative of hydrogels. We focus on the modeling of the surface behavior and employ a mortar-finite element contact formulation. Through a series of numerical studies, we demonstrate the strong sensitivity of the results to the choice of interfacial constitutive parameters. The difficulties of extracting such parameters using only experimental data and approximate analytical expressions are also examined. © 2008 Elsevier Ltd. All rights reserved.

DOI10.1016/j.ijsolstr.2008.11.007
Short TitleInternational Journal of Solids and Structures