Can anyone help me out in giving damage parameters in damaged plasticity model for modelling concrete in Abaqus/CAE?
Select the damage parameter "DAMAGEC" and "DAMAGET" from the field output request under failure. After the analysis has been performed you can observe the damage pattern in the "Visualisation" module.
The Concrete Damaged Plasticity Model (ABAQUS command: *CONCRETE DAMAGED PLASTICITY) uses the concept of isotropic damaged elasticity in combination with isotropic tensile and compressive plasticity to represent the inelastic behaviour of concrete. In contrast to the Brittle Cracking Model it allows the definition of strain hardening in compression and can be defined to be sensitive to the straining rate, which resembles the behaviour of concrete more realistically. The Concrete Damaged Plasticity Model is designed for applications in which concrete is subject to cyclic loading with alternating tension compression loading, e.g. seismic problems. The model allows stiffness recovery during cyclic loading reversals. In contrast to the Brittle Cracking Model the Concrete Damaged Plasticity Model does not contain a failure criterion and thus does not allow the removal of elements during the analyses. This makes it difficult to model missile impact phenomena where perforation of the missile through the reinforced concrete slab is most likely, i.e. high initial missile velocity and weak reinforcement. On the other hand the Concrete Damaged Plasticity Model may be used in conjunction with adaptive meshing (ABAQUS command: *ADAPTIVE MESH). Adaptive meshing means that the impacted zone of the concrete slab is re-meshed regularly during the analyses in order to avoid heavy distortion of the elements. This allows completion of the analyses even to relatively high deformation rates.
Dear Prathibha George,
The following paper shows a very useful methodology for determining dc and dt parameters, as well as other constitutive parameters.
B. Alfarah, F. López-Almansa, S. Oller, New methodology for calculating damage variables evolution in Plastic Damage Model for RC structures, Engineering Structures. 132 (2017) 70–86.
It is a very recent and updated work.
Best regards,
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