A study of high strength steels undergoing non-linear strain paths—Experiments and modelling

✍ Scribed by Rikard Larsson; Oscar Björklund; Larsgunnar Nilsson; Kjell Simonsson

• Book ID: 104023502
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 910 KB
• Volume: 211
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/j.jmatprotec.2010.09.004

✦ Synopsis

This paper presents an evaluation of the constitutive behaviour, including plastic anisotropy and mixed isotropic-kinematic hardening of two high strength steels, Docol 600DP and Docol 1200M, during strain path changes. A series of tensile and shear tests was performed on both virgin and pre-strained materials. The initial anisotropy and work hardening parameters were obtained from tensile tests, shear tests and a bulge test of the virgin material, whereas the kinematic hardening parameters were identified by comparing numerical predictions to experimental results related to the pre-strained materials. Numerical predictions using the obtained parameters agree well with the experimental results, both in the case of proportional, and under non-proportional strain paths.