Types of Rebar Discretization and their Characteristics in Computational Simulations of Concrete Structures through the Finite Element Method
Rodrigo Borges Primieri1; Paula Manica Lazzari2; Alexandre Rodrigues Pacheco1
1 Federal University of Rio Grande do Sul; 2 Federal University of Santa Catarina
doi:10.20906/CPS/CILAMCE2017-0725
Resumo
Computational modeling to simulate numerically structures is a methodology that has been increasingly important for the understanding of structures behavior, mainly when involving reinforced concrete, a material that presents a variety of complex phenomena. Even considering a quite noticeable technological advancement in the last decades on digital resources, which has been considerably increasing the possibilities, the designer's knowledge will never cease to be of fundamental importance. Therefore, in this work, focus is given to the choice of the rebar model type when applying the Finite Element Method (FEM). Among the typical choices, they could be classified as Distributed or Smeared; Discrete; and of the Element-Embedded type. In this way, a description of each model type is given, identifying main characteristics, advantages, and disadvantages, illustrating with experimental tests available in the literature, involving different structural elements in reinforced concrete. Comparisons between experimental data and computational analyses carried out with ANSYS are presented, showing the different aspects investigated. Additionally, statistics on the occurrence and typical use conditions of each model type when applied in reinforced concrete problems are also presented.
Palavras-chave: Finite Element Method; ANSYS; Reinforced Concrete; Rebar Discretization