Record number :
1418839
Title of article :
Evolution of matt surface topography in aluminium pack rolling. Part II: effect of material properties
Author/Authors :
Utsunomiya، نويسنده , , H. and Sutcliffe، نويسنده , , M.P.F. and Shercliff، نويسنده , , H.R. and Bate، نويسنده , , P and Miller، نويسنده , , D.B.، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2004
Pages :
11
From page :
1365
To page :
1375
Abstract :
A model has been presented in a companion paper [1] to predict the generation of roughness on the matt surface in pack rolling of aluminium foil. The model is based on the finite element method using isotropic plasticity. This model is used in the current paper to investigate the effect of material properties on the generation of surface roughness. There is a large inhomogeneity of strain during deformation, with harder grains generally deforming less than softer ones. It is found that the roughness amplitude is roughly proportional to the standard deviation of the initial grain yield stress distribution, normalised by the initial mean yield stress, so that a wider distribution of the initial yield stress results in greater surface roughness. It is shown that a suitable linear hardening law can be used to approximate the roughening behaviour for real material flow stress curves.
Keywords :
Surface roughness , shear Bands , Finite element analysis , Aluminium alloys
Journal title :
International Journal of Mechanical Sciences
Link To Document :