STUDYING FRACTURE OF CONCRETE STRUCTURE: HOMOGENIZATION AND FINITE ELEMENT MODELING

Abstract

The study of crack initiation and propagation is very crucial in numerical methods to predict the true behavior of the reinforced concrete structure. Two approaches that are discrete-crack and smeared-crack, are mostly used in finite element models to simulate the cracks in any reinforced concrete structure. In Abaqus 3D RCC beam was modeled using the Concrete Damage Plasticity property. The beam is loaded under four-point loading whose results were compared with the experimentally tested beam of the same dimension and property as of model beam. Further aiming to build model which can solve RCC large structure including crack growth and propagation with computational feasibility and accurately. The multiscale method serves the purpose where without explicitly solving microscale of heterogeneous material, the large-scale can be solved. The multiscale method based on Variational Consistent Homogenisation was defined for 2D RCC Euler-Bernoulli Beam. In which the response of represented volume element was homogenized to achieve the effective/average moment-curvature graph by imposing suitable boundary condition on it.