Computational modeling of steel fiber reinforced concrete

Resumo

New building technologies are developed with the goal of improving structural performance. One very
promising technology is the steel fiber reinforced concrete (SFRC), in which steel fibers are added in the concrete

mixture. Concrete is a fragile material whose tensile resistance is very lower than compressive. Steel reinforce-
ment, as well as steel fibers, improves the tensile behavior, grants more ductility to concrete and increases cracking

and spalling resistance. Although SFRC is considered promising, there are still a few reliable computational mod-
els to analyze and predict the behavior of SFRC. The modeling is difficult because of the random distribution of

fibers and the consequent anisotropy. A numerical and computational approaching, using numerical methods, is

used to develop this work. Different constitutive models are analyzed and the results are compared with experimen-
tal data obtained from flexural tests. This work aims to extend the application of the SFRC in various situations,

for example the precast structures.