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- W4283260076 endingPage "108634" @default.
- W4283260076 startingPage "108634" @default.
- W4283260076 abstract "A model for plasticity and damage, developed in the context of continuum damage mechanics and consistent with micromechanisms of void nucleation, growth, and coalescence, is presented. The damage dissipation potential has been formulated specifically to account for different damage contributions due to intervoid necking, shearing, and sheeting under arbitrary stress states. The existence of a cut-off for the negative stress triaxiality was questioned and unilateral conditions for ductile damage have been reformulated accordingly, considering the combination of stress triaxiality and Lode parameter. The model allows the derivation, although in implicit form, of the fracture locus for the whole range of stress triaxiality. An example application to Al2024-T351 and Al6061-T6 is presented. The proposed formulation represents an attempt to reconcile CDM theoretical framework with the ductile fracture specific mechanisms and their sequential progression under general loading conditions, making advantages of micromechanical modeling to establish correlations between void evolution and continuum scale physical quantities. Finite element model implementation and plasticity model formulation will be discussed in a forthcoming companion paper." @default.
- W4283260076 created "2022-06-23" @default.
- W4283260076 creator A5033851960 @default.
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- W4283260076 date "2022-08-01" @default.
- W4283260076 modified "2023-10-18" @default.
- W4283260076 title "Plasticity damage self-consistent model incorporating stress triaxiality and shear controlled fracture mechanisms – Model formulation" @default.
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- W4283260076 doi "https://doi.org/10.1016/j.engfracmech.2022.108634" @default.
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