Heterogeneous Biaxial Tensile Tests For The Characterization Of Sheet Metals Plastic Anisotropy

Two types of cruciform specimens designed for the inverse identification of anisotropic yield surfaces of sheet metals are presented. A particular emphasis is given on the specimens design and on the sensitivity of strain fields to plastic anisotropy. The relations between experimental strain fields and identified yield surfaces are outlined for 4 materials with widely different anisotropies.