It has long been found that,during deformation process,the crystal orientations would gradually rotate around some ideal orientations,and then would affect the later deformation properties of sheet metal.So it is very important to introduce texture model into metal forming processes.In this paper,a rate-independent polycrystalline plasticity model is developed and introduced into dynamic explicit element method.Metal flow is assumed to occur by crystallographic slip on given slip systems within each crystal.Every integration point represents a single crystal.Then cup drawing of sheet metal is studied using crystalline plasticity finite element analysis.For the rolled aluminum sheet,which contains strong {001}<110> texture,earing is formed at 45 deg direction after cup drawing.For the annealing aluminum sheet,due to the balance between two main textures,the flange earing tendency is not obvious.And for the soft steel sheet with a faintish orientation distribution,the flange earing tendency is not obvious,too.
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