USE OF EMBEDDED REINFORCEMENT IN ANSYS FOR NON LINEAR ANALISYS OF REINFORCED CONCRETE BEAMS
Bruna Manica Lazzari1; Américo Campos Filho2; Paula Manica Lazzari3
1 PUCRS/UFRGS; 2 UFRGS; 3 UFSC
doi:10.20906/CPS/CILAMCE2017-0014
Resumo
This work presents the development of a computational model, based on the finite element method, through the ANSYS platform, version 14.5, for the study of reinforced concrete structures, under plane stress states. For the representation of the constitutive equations of concrete and steel, it was implemented a new model of material with the help of the customization tool UPF (User Programmable Features) of ANSYS, where new subroutines were added to the main program in FORTRAN language. The implementation of this new model enabled the use of two-dimensional quadratic elements of 8 nodes (PLANE183) with embedded reinforcement (REINF263), making the solution of the problem faster and more effective. In order to validate the subroutines added to the system, it was simulated the reinforced concrete beams, tested by Leonhardt e Walther (1962), covering a wide variety of behaviors, including situations of failures by bending and shearing. The comparison between experimental and numerical analysis showed satisfactory results.
Palavras-chave: Reinforced Concrete Beams; Embedded Reinforcement; ANSYS; UPF