@article{eprints1936, title = {Size-scale effects on the friction coefficient }, year = {2005}, volume = {42}, pages = {2901 -- 2910}, number = {9?10}, journal = {International Journal of Solids and Structures}, publisher = {Elsevier}, author = {Alberto Carpinteri and Marco Paggi}, url = {http://eprints.imtlucca.it/1936/}, abstract = {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. }, keywords = {Friction; Contact; Fractals; Geomechanics; Scale effects} }