%0 Book Section
%A Paggi, Marco
%A Zavarise, Giorgio
%B Proceedings of the 19th AIMETA Congress of Theoretical and Applied Mechanics
%D 2009
%F eprints:2055
%I Aras Edizioni
%K Contact mechanics, rough surfaces, functionally graded materials.
%P 1-10
%T Contact mechanics of functionally graded rough surfaces
%U http://eprints.imtlucca.it/2055/
%X In this paper the Greenwood and Williamson contact theory for microscopically  rough surfaces is generalized by considering a grading on the elastic modulus of the asperities.  This situation can be representative of surfaces receiving superficial treatments or characterized by  a chemical degradation. The effect of an exponential grading on the applied normal load, on the  relationship between the real contact area and the load, on the plasticity index, as well as on the  contact conductance is illustrated with detailed numerical examples.
%Z 19th AIMETA Congress of Theoretical and Applied Mechanics, Ancona, Italy, September 14-17, 2009