Modeling the hysteretic responses of RC shear walls under cyclic loading by an energy-based plastic-damage model for concrete

Abstract

This paper addresses application of an energy-based plastic-damage model for concrete to the modeling of hysteretic responses of reinforced concrete (RC) shear walls. Both damage evolution and plastic flows are accounted for within the framework of thermodynamics, resulting in consistent energy-based damage evolution laws. The model is implemented in the commercial software package ABAQUS via the user-defined material subroutine and applied to two representative benchmark tests of RC shear walls under cyclic loading. It is shown that with the steel reinforcement properly accounted for, the energy-based plastic-damage model can capture realistically the failure modes, load capacities, and overall load–deformation responses of RC shear walls.

A review of continuum damage and plasticity in concrete: Part I – Theoretical framework

“…Numerous isotropic/anisotropic coupled damage plasticity models coupled with plasticity on the bases of thermodynamics are proposed with modifications and merging of previous work having features of strain equivalency hypothesis or strain energy equivalency hypothesis, with more or fewer model parameters, varied plastic criterion, type of damage model based on strain, strain equivalent, stress, damage driving conjugate force, etc., and distinct tensile and compressive damage variables/tensors (Brünig and Michalski, 2017; Desmorat et al., 2009; Desmorat and Gatuingt, 2008; Grassl et al., 2013; Nguyen and Korsunsky, 2008; Pröchtel and Häußler-Combe, 2008; Voyiadjis et al., 2008; 2009; Zafati and Richard, 2019; Zhang and Li, 2014; Zhang and Yu, 2017). Zhang and Yu (2017) presented the constitutive model for varieties of brittle and quasi-brittle materials whose material constants for each material is obtained by fitting the uniaxial alternate tensile and compressive loading and fitting the polynomial function to them, which are then indirectly related to the material constants of the model. Some of the constants are obtained from the literature, which are fixed by hit and trial rule to fit the experimental results with numerical simulations.…”

“…Some of the constants are obtained from the literature, which are fixed by hit and trial rule to fit the experimental results with numerical simulations. More details can be found in Zhang and Yu (2017). Most of the material models use the same model parameters from the beginning according to the need to predict the change in behavior of concrete under loading.…”

A review of continuum damage and plasticity in concrete: Part II – Numerical framework

“…The model was implemented in a UMAT subroutine and validated against experimental data including uniaxial, biaxial, and three-point bending tests. Many others adopted the elastic predictor plastic corrector and damage corrector algorithm (Brünig and Michalski, 2020; Comi and Perego, 2001a; Zhang et al., 2016, 2018, 2020b). The operator split method for the elastic-plastic-damage model with Euler return mapping algorithm are utilized by many authors implemented in Abaqus user-defined subroutines (Zhang and Li, 2014b).…”

Hysteretic Behavior on Asymmetrical Composite Joints with Concrete-Filled Steel Tube Columns and Unequal High Steel Beams

“…The expressions are shown in Formulas ( 1)- (11), and the physical significance of each variable in the formula is shown in reference [20]. During finite element modeling, the plastic damage model of concrete is selected [24], which can take the stiffness degradation of concrete under low-cyclic loading into account. The following formula represents the stress-strain curve of concrete subjected to uniaxial compression [20]:…”