Open AccessAdhesive contact of randomly rough surfaces: experimental and numerical investigations
Author(s) -
Guido Violano,
A. Chateauminois,
L. Afferrante
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1038/1/012049
Subject(s) - adhesive , coalescence (physics) , contact mechanics , materials science , contact area , surface finish , mechanics , surface roughness , asperity (geotechnical engineering) , soft materials , adhesion , composite material , finite element method , structural engineering , nanotechnology , physics , engineering , layer (electronics) , astrobiology
The contact mechanics of soft matters is strongly affected by short-range adhesive interactions, which can lead to large deformations and contact instabilities. In this work, we present both experimental and numerical investigations of the adhesive contact between soft elastic bodies with a Greenwood and Williamson (GW)-like roughness. To investigate the coalescence of neighbour contact spots, surfaces have been designed with overlapping spherical asperities. Normal contact experiments are carried out by using a home-built device. Numerical simulations are performed with the Interacting and Coalescing Hertzian Asperities (ICHA) model, conveniently modified to take account of adhesion according to the Johnson, Kendall & Roberts (JKR) theory.