%0 Journal Article
%@ 0020-7683
%A Carpinteri, Alberto
%A Paggi, Marco
%D 2005
%F eprints:1936
%I Elsevier
%J International Journal of Solids and Structures
%K Friction; Contact; Fractals; Geomechanics; Scale effects
%N 9–10
%P 2901 - 2910
%T Size-scale effects on the friction coefficient 
%U http://eprints.imtlucca.it/1936/
%V 42
%X An overview of the classical friction laws holding at the macro-scale and the new developments at the nano-level are proposed. Furthermore, two opposite phenomena are addressed: the former concerning the apparent weakness of the San Andreas fault, the latter regarding the strong frictional behavior which appears at the nano-scale. An interpretation of these size effects on the friction coefficient is attempted making use of the renormalization group procedure which allows to explain the frictional phenomena over all the scales.