A nonlocal coupled damage-plasticity model for the analysis of ductile failure
作者： Giang D. Nguyen , Alexander M. Korsunsky , Jonathan P.-H. Belnoue
DOI: 10.1016/J.IJPLAS.2014.08.001
关键词: Pointwise 、 Damage mechanics 、 Materials science 、 Plasticity 、 Finite element method 、 Structural engineering 、 Ductility 、 Stiffness 、 Hardening (metallurgy) 、 Softening
摘要: This paper presents a nonlocal coupled damage-plasticity model for the analysis of ductile fracture. The proposed makes use both damage mechanics and plasticity theories hence is able to capture pre-peak hardening post-peak softening responses as well stiffness reduction material during deformation fracture processes. Nonlocal regularisation technique used an enhancement deal with related problems in constitutive modelling failure analysis. Emphasis put on determination parameters novel calibration procedure, based experimental (Korsunsky Kim, 2005) measurement essential non-essential works fracture, effectively calibration. It shown that all can be properly calibrated method, results, making attractive practical applications. enables stress update carried out pointwise, facilitates implementation existing finite element codes. Numerical examples are demonstrate capability model.
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