SIMULATION OF EARING IN TEXTURED MATERIALS

Abstract The cup drawing of anisotropic materials was analyzed to determine the relation between earing behavior and mechanical anisotropy. Two factors referred to here as the radial-to-circumferential strain ratio and the normalized circumferential stress were shown to play important roles in ear formation. Ear profiles were estimated from texture data by a tension-compression model with the aid of the continuum mechanics of textured polycrystals method. The treatment was extended to ear evolution during drawing by means of the elemental upper bound technique. The predicted cup profiles showed good agreement with experimental results.