Aplicação de um modelo de dano isotrópico escalar na análise de vigas parede de concreto armado

Abstract

This work describes the numerical simulation of a reinforced concrete deep beam. Concrete is discretised with 2D finite elements, and its behavior is reproduced by a constitutive isotropic damage model with two scalar damage variables. Steel rebars are represented by 2-noded truss element, and its behaviour is reproduced by one-dimensional plasticity model with isotropic and kinematic hardening laws. The steel reinforcement is connecting adjacent nodes of the concrete finite element mesh. The perfect bond between concrete and reinforcement was considered. Finally, some numerical analyses are presented in order to show some characteristics of the model and demonstrate its capacity to describe the relevant features of concrete by an adequate calibration of the model parameters from experimental data.