Evolution of real contact area under shear and the value of static friction of soft materials

R Sahli, G Pallares, C Ducottet… - Proceedings of the …, 2018 - National Acad Sciences
The frictional properties of a rough contact interface are controlled by its area of real contact,
the dynamical variations of which underlie our modern understanding of the ubiquitous rate …

Continuum contact models for coupled adhesion and friction

JC Mergel, R Sahli, J Scheibert… - The Journal of …, 2019 - Taylor & Francis
We 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 …

An asperity-based statistical model for the adhesive friction of elastic nominally flat rough contact interfaces

Y Xu, J Scheibert, N Gadegaard, DM Mulvihill - Journal of the Mechanics …, 2022 - Elsevier
Contact mechanics-based models for the friction of nominally flat rough surfaces have not
been able to adequately capture certain key experimentally observed phenomena, such as …

Shear-induced anisotropy in rough elastomer contact

R Sahli, G Pallares, A Papangelo, M Ciavarella… - Physical Review Letters, 2019 - APS
True contact between randomly rough solids consists of myriad individual microjunctions.
While their total area controls the adhesive friction force of the interface, other macroscopic …

Texture-induced modulations of friction force: the fingerprint effect

E Wandersman, R Candelier, G Debrégeas, A Prevost - Physical review letters, 2011 - APS
Modulations of the friction force in dry solid friction are usually attributed to macroscopic stick-
slip instabilities. Here we show that a distinct, quasistatic mechanism can also lead to nearly …

Do uniform tangential interfacial stresses enhance adhesion?

N Menga, G Carbone, D Dini - Journal of the Mechanics and Physics of …, 2018 - Elsevier
We present theoretical arguments, based on linear elasticity and thermodynamics, to show
that interfacial tangential stresses in sliding adhesive soft contacts may lead to a significant …

[HTML][HTML] Buckling and post-buckling of a stiff film resting on an elastic graded substrate

YP Cao, F Jia, Y Zhao, XQ Feng, SW Yu - International Journal of Solids …, 2012 - Elsevier
Systems consisting of a hard layer resting on an elastic graded soft substrate are frequently
encountered both in nature and industry. In this paper, we study the surface wrinkling …

Real contact area and friction property of rubber with two-dimensional regular wavy surface

K Matsuda, D Hashimoto, K Nakamura - Tribology International, 2016 - Elsevier
The elastic contact of two-dimensional regular wavy surface with a flat surface and its
frictional behaviour are studied by using three types of blocks of silicone rubber as …

Insect adhesion on rough surfaces: analysis of adhesive contact of smooth and hairy pads on transparent microstructured substrates

Y Zhou, A Robinson, U Steiner… - Journal of the Royal …, 2014 - royalsocietypublishing.org
Insect climbing footpads are able to adhere to rough surfaces, but the details of this
capability are still unclear. To overcome experimental limitations of randomly rough, opaque …

Conformal adhesion enhancement on biomimetic microstructured surfaces

H Shahsavan, B Zhao - Langmuir, 2011 - ACS Publications
Inspired by the superior adhesive ability of the gecko foot pad, we report an experimental
study of conformal adhesion of a soft elastomer thin film on biomimetic micropatterned …