TY - GEN
T1 - Numerical simulation of a pyramid steel sheet formed by single point incremental forming using solid-shell finite elements
AU - Duchêne, Laurent
AU - Guzmán, Carlos Felipe
AU - Behera, Amar Kumar
AU - Duflou, Joost
AU - Habraken, Anne Marie
PY - 2013
Y1 - 2013
N2 - 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[1]. In this paper, a finite element simulation of this geometry is carried out using a newly implemented solid-shell element [2], 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.
AB - 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[1]. In this paper, a finite element simulation of this geometry is carried out using a newly implemented solid-shell element [2], 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.
KW - Assumed natural strain
KW - Enhanced assumed strain
KW - Single Point Incremental Forming
KW - Solid shell finite element
UR - http://www.scopus.com/inward/record.url?scp=84877864139&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.549.180
DO - 10.4028/www.scientific.net/KEM.549.180
M3 - Conference contribution
AN - SCOPUS:84877864139
SN - 9783037856710
VL - 549
T3 - Key Engineering Materials
SP - 180
EP - 188
BT - Sheet Metal 2013
T2 - 15th International Conference on Sheet Metal, SheMet 2013
Y2 - 25 March 2013 through 27 March 2013
ER -