FINITE ELEMENT SIMULATION OF SMALL PUNCH TEST FOR ALUMINUM ALLOY A1050-H14

Abstract

In this study, the small punch test is modelled and simulated by finite
element method. Johnson-Cook plasticity model is applied for aluminum alloy
A1050-H14. The results obtained from computational simulation are compared to
the experimental results in previous study. Then, the parameters of Johnson-Cook
plasticity model are chosen for investigated material. It can be proposed the
fracture mechanism in the small punch test for aluminum alloy A1050-H14 is
ductile fracture. The necking occurs in the area where the specimen is in contact
with the edge of the punch at the certain level of displacement of the punch, then
the initial crack might appear from outside of the specimen.