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The Deformation and Adhesion of Elastic Bodies

Summary: The Deformation and
Adhesion of Elastic Bodies
in Contact
Phil Attard and John L. Parker
Department of Applied Mathematics,
Australian National University,
Canberra ACT Australia, 0200.
Phys. Rev. A 46, 7959­7971 (1992).
The elastic deformation and adhesion of two con­
vex bodies that interact via surface forces of fi­
nite range is calculated self­consistently. Hertz
theory is compared to the result of an exponen­
tial repulsion, and it is found to be valid in the
limit of short­ranged forces and high loads. A
Lennard­Jones law is used to examine the clas­
sical theories of adhesion, which relate the sur­
face energy to the pull­off force, and their regime
of validity is explored. Explicit expressions are
given for the displacement prior to contact, and


Source: Attard, Phil - School of Chemistry, University of Sydney


Collections: Chemistry