International Conference on Sheet Metal (SheMet 2013) edition:15 location:Belfast: NORTH IRELAND date:25-27 March 2013
Single Point Incremental Forming (SPIF) is an interesting manufacturing process due to
its dieless nature and its increased formability compared to conventional forming processes.
Nevertheless, the process suffers from large geometric deviations when compared to the original
CAD profile. One particular example arises when analyzing a truncated two-slope pyramid . In
this paper, a finite element simulation of this geometry is carried out using a newly implemented
solid-shell element , which is based on the Enhanced Assumed Strain (EAS) and the Assumed
Natural Strain (ANS) techniques. The model predicts the shape of the pyramid very well, correctly
representing the springback and the through thickness shear (TTS). Besides, the effects of the finite
element mesh refinement, the EAS and ANS techniques on the numerical prediction are presented.
It is shown that the EAS modes included in the model have a significant influence on the accuracy
of the results.