Numerical Analyses of Stress-triaxiality-dependent Inelastic Deformation Behavior of Aluminum Alloys

作者：Bruenig Michael; Albrecht Daniel; Gerke Steffen

来源：International Journal of Damage Mechanics, 2011, 20(2): 299-317.

DOI：10.1177/1056789509351837

• anisotropic damage
• damage criterion
• stress triaxialities
• Lode parameter
• numerical simulations

The article deals with the effect of stress triaxiality on the inelastic deformation behavior of aluminum alloys. The proposed continuum model takes into account a stress-triaxiality-dependent yield condition as well as a damage criterion with different branches corresponding to various damage modes depending on the stress triaxiality and the Lode parameter. Numerical simulations of experiments with smooth and pre-notched tension and shear specimens are presented covering a wide range of stress triaxialities. Numerical results show good agreement with available experimental data. The analyses allow verification of the macroscopic model and identification of material parameters.

• 出版日期2011-3