Ductile-to-brittle transition behavior using peridynamics simulations

Resumo

The problem of the Size effect on the material's tensile strength becomes a particularly important point
when a transition is made between the size of the structure tested in the laboratory and its actual size. Thus, the
question of the validity of laboratory tests and the prediction of their behavior in engineering structures continue
to be a topic in constant research. It is known that as the size of the tested sample increases, there is a change in
the global behavior from ductile to brittle. Capturing this change is the key to knowing the real behavior of the
sample and offering better predictions for the design of this type of structure. In this work, the application of the
peridynamic (PD) theory is evaluated to predict the behavior of quasi-brittle material specimens of different sizes
submitted the uniaxial tensile load. The potential of the numerical method shown that PD is a powerful tool capable
of successfully representing the transition between global behaviors.