Topic
Contact area
About: Contact area is a research topic. Over the lifetime, 12358 publications have been published within this topic receiving 256401 citations. The topic is also known as: contact patch & contact region.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the axisymmetric double contact problem for an elastic layer pressed against a half space by an elastic stamp is considered under the assumptions that the three materials have different elastic properties, the contact along the interfaces is frictionless and only compressive normal tractions can be transmitted across the interfaces, and, in the case of the elastic stamp, the local radius of curvature of the stamp is large compared to the stamp-layer contact radius.
68 citations
TL;DR: Measurements of the shear stress distribution at a frictional interface between a flat rubber substrate and a glass lens suggest that simple notions of real contact area and constant interface shear Stress cannot account for the observed changes in local friction when roughness is varied.
Abstract: This paper reports on spatially resolved measurements of the shear stress distribution at a frictional interface between a flat rubber substrate and a glass lens. Silicone rubber specimens marked close to their surface by a colored pattern have been prepared in order to measure the surface displacement field induced by the steady-state friction of the spherical probe. The deconvolution of this displacement field then provides the actual shear stress distribution at the contact interface. When a smooth glass lens is used, a nearly constant shear stress is achieved within the contact. On the other hand, a bell-shaped shear stress distribution is obtained with rough lenses. These first results suggest that simple notions of real contact area and constant interface shear stress cannot account for the observed changes in local friction when roughness is varied.
68 citations
TL;DR: In this paper, a series of molecular dynamics simulations of single asperity contact and deformation that occurs as two rough surfaces are brought together, loaded and then separated are presented, and qualitative features of the force, contact area and conductance versus displacement plots are in excellent qualitative agreement with experimental observations.
68 citations
TL;DR: A vesicle bilayer loaded with molecules that can bind (upon contact) with a solid surface is considered, following the classical model of Bell, Dembo, and Bongrand, and detailed predictions for the growth laws are given.
Abstract: We consider a vesicle bilayer loaded with molecules that can bind (upon contact) with a solid surface, following the classical model of Bell, Dembo, and Bongrand. We are interested in situations where the contact area varies with time: we assume that binders can then migrate via diffusion. The resulting dissipation and lag create a retarded force on the contact line, which could be significant in squeezing or rolling experiments. However, there are two cases where we expect the lag force to be ineffective: (i) separation by shrinking of an adhesive patch (where the Evans "tear out" process turns out to be less costly) and (ii) spontaneous growth of a patch from a point contact. In this last case, the lag force is weak, and we give detailed predictions for the growth laws.
68 citations
TL;DR: In this paper, a hybrid contact force model based on the Lankarani-Nikravesh model and the elastic foundation model is proposed for small clearance and low restitution coefficient situations for a revolute clearance joint in the slider-crank mechanism.
68 citations