Abstract (EN):
Formability prediction in sheet metal forming processes is an important
demand from industry, since such assessment defines the success of a stamping process.
The ability to predict the formability limit is of major importance in order to optimize the
process, examine the influence of each parameter on the necking occurrence and
consequently to improve the press performance. In this work, Lemaitre¿s ductile damage
model is implemented in Abaqus /Explicit code in order to compare the performance of
this coupled approach with the traditional use of FLDs. These are usually employed as an
a posteriori analysis of the finite element solution in which the necking phenomenon is
carried out in the framework of Marciniak-Kuczinsky analysis coupled with the theory of
plasticity. The previous strategies are compared with an experimental failure case.
Language:
English
Type (Professor's evaluation):
Scientific
No. of pages:
3