Evaluation of the Enhanced Assumed Strain and Assumed Natural Strain in the SSH3D and RESS3 Solid Shell Elements for Single Point Incremental Forming Simulation
Guzmán Inostroza, Carlos Felipe; Ben Bettaieb, Amine; Velosa de Sena, José Ilidioet al.
2012 • In Key Engineering Materials, 504-506, p. 913-918
Solid Shell Finite Element; Enhanced Assumed Strain; Assumed Natural Strain; Single Point Incremental Forming; LIMARC
Abstract :
[en] Single Point Incremental Forming (SPIF) is a recent sheet forming process which can give
a symmetrical or asymmetrical shape by using a small tool. Without the need of dies, the SPIF is capable to deal with rapid prototyping and small batch productions at low cost. Extensive research from both experimental and numerical sides has been carried out in the last years. Recent developments in the finite element simulations for sheet metal forming have allowed new modeling techniques, such as the Solid Shell elements, which combine the main features of shell hypothesis with a solid-brick element. In this article, two recently developed elements -SSH3D element [1, 2] and RESS3 element [3]- implemented in Lagamine (finite element code developed by the ArGEnCo department of the University of Liège) are explained and evaluated using the SPIF line test. To avoid locking problems, the well-known Enhanced Assumed Strain (EAS) and Assumed Natural Strain (ANS) techniques are used. The influence of the different EAS and ANS parameters are analysed comparing the predicted tool forces and the shape of a transversal cut, at the end of the process. The results show a strong influence of the EAS in the forces prediction, proving that a correct choice is fundamental for an accurate simulation of the SPIF using Solid Shell elements.
Disciplines :
Materials science & engineering
Author, co-author :
Guzmán Inostroza, Carlos Felipe ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F
Ben Bettaieb, Amine ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F
Velosa de Sena, José Ilidio; University of Aveiro, Portugal > Department of Mechanical Engineering
Alves de Sousa, Ricardo; University of Aveiro, Portugal > Department of Mechanical Engineering
Habraken, Anne ; Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo
Duchene, Laurent ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Analyse multi-échelles des matériaux et struct. du gén. civ.
Language :
English
Title :
Evaluation of the Enhanced Assumed Strain and Assumed Natural Strain in the SSH3D and RESS3 Solid Shell Elements for Single Point Incremental Forming Simulation
Publication date :
February 2012
Journal title :
Key Engineering Materials
ISSN :
1013-9826
eISSN :
1662-9795
Publisher :
Trans Tech Publications, Aedermannsdorf, Switzerland
Volume :
504-506
Pages :
913-918
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Interuniversity Attraction Poles Program (Belgian State) Belgian Sci- ence Policy (Contract P6/24) F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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