Plasticity Model for Concrete under Triaxial Compression

By I. Imran, S. Pantazopoulou. 2001

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Identification of material parameters for Drucker-Prager plasticity model for FRP confined circular concrete columns (2012, background): “However, it is inconsistent with the observation that the slope of plastic potential function should vary with the increasing lateral stress (Grassl et al., 2002; Han and Chen, 1985; Imran and Pantazopoulou, 2001; Papanikolaou and Kappos, 2007; Smith et al., 1989).”
Computational applications of a coupled plasticity-damage constitutive model for simulating plain concrete fracture (2010, background): “[5,6,9,28,37,50,59]), where the nominal stress is defined as the macroscale stress acting on both damaged and undamaged material.”
Lateral Strain-to-Axial Strain Relationship of Confined Concrete (2015, background): “With the increase in deformation after the peak stress is reached, the interparticle cohesion in concrete continues to decrease, and the remaining strength generated from frictional action in the confined concrete is known as the residual concrete strength (Imran and Pantazopoulou 2001).”
A plasticity and anisotropic damage model for plain concrete (2007, unknown): “…type is based on stress-based plasticity in the nominal (damaged) stress space (e.g. Bazant and Kim, 1979; Ortiz, 1985; Lubliner et al., 1989; Imran and Pantazopoulu, 2001; Ananiev and Ozbolt, 2004; Kratzig and Polling, 2004; Menzel et al., 2005; Brünig and Ricci, 2005), where the nominal…”