13th International Conference on Fracture June 16–21, 2013, Beijing, China -3- Figure 1. Procedure of identifying failure locus under static loading and dynamic loading Bao and Wierzbicki [1, 2, 3, 5] contributed a lot on ductile failure criteria for metallic materials such as high strength steel and aluminum. Inversing engineering method was utilized to identify effective failure strain under certain stress triaxiality. Fig. 1 shows the procedure of identification of failure locus. The first step is to carry out material tests such as uniaxial tension, biaxial tension, simple shear, compression, notched-tension and punching. Basic material tests such as uniaxial tension, biaxial tension, simple shear and compression are critical for identification of material parameters and input curves, which is required in material model SAMP-1. Corresponding modeling of these tests are run to validate the material model. Also, simulations of uniaxial tension, simple shear,
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