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Plasticity Aspects of Rough Surface Flattening
Biwa, Shiro,Larsson, Joachim,Storakers, Bertil 대한금속재료학회(대한금속학회) 1998 METALS AND MATERIALS International Vol.4 No.3
Flattening behaviour of rough surfaces is studied accounting for inelastic deformation of asperities distributed on the surface. A consistent micromechanical framework is described which includes a rigorous analysis of plastic deformation of a single asperity followed by a micro-macro linking theory relating the local asperity compliance to its global counterpart of nominal pressure and approach distance. The local analysis rests on recent computational advances where results for a wide range of strain-hardening plastic materials have been condensed in concise formulae. An illustration is given where flattening of rough surfaces by normal loading is determined using a statistical topography description and discussed for fractal theory as well.