Analysis of the metal sheets formability at single point incremental forming process

Résumé

Although research on incremental forming process began a few decades ago, it is still a
process in development phase. Single point incremental forming is a simple process and the
deformation of the sheet blank is done with the help of a punch that follows a known toolpath.
In the case of this process, one important aspect is the prediction of material failure. To achieve this
with the help of a finite element analysis, a series of experiments were performed to determine the
forming limit diagram. In this paper, an attempt has been made to determine the forming limit diagram
for the AA1050 aluminium alloy and DC01 steel sheets. The experiments were performed with the
help of an industrial robot, KUKA KR 210-2, thus the part can be measured with an optical measuring
instrument obtaining the major and minor strain from forming limit diagram.