TY  - SER
AU  - Edin Omerspahic
AU  - Kjell Mattiasson
TI  - Oriented Damage in Ductile Sheets: Constitutive Modeling and Numerical Integration
SN  - 1056-7895
KW  - Constitutive Modeling
KW  - Anisotropic Damage
KW  - Small Strain Elasticity
KW  - Large Strain Plasticity
KW  - Mixed Hardening
KW  - Numerical Integration
N2  - Thermodynamics with internal variables provides a framework for constitutive modeling of elasto-plastic deformations. Within the scope of the theory, constitutive and evolution equations for ductile, elasto-plastic materials with mixed (isotropic and kinematic) hardening and anisotropic damage have been developed. Postulates within continuum damage mechanics were used in order to incorporate damage as an internal variable. Owing to this, and to a simplified definition of the inverted damage effect tensor, a general expression for degradation of the elastic properties in materials has been obtained. The corresponding numerical algorithm for integration of the constitutive equations is based on an elastic predictor – plastic/damage corrector procedure. The plastic/damage corrector is uncoupled, which further simplifies and expedites the corrector procedure
UR  - https://doi.org/10.1177/1056789507060776
ER  -