Article (Scientific journals)
Damage prediction in single point incremental forming using an extended Gurson model
Guzman, Carlos Felipe; Yuan, Sibo; Duchene, Laurent et al.
2018In International Journal of Solids and Structures, 151, p. 45-56
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Keywords :
Single point incremental forming; Ductile fracture; Gurson model; Finite element method; Limarc
Abstract :
[en] Single point incremental forming (SPIF) has several advantages over traditional forming, such as the high formability attainable by the material. Different hypotheses have been proposed to explain this behavior, but there is still no straightforward relation between the particular stress and strain state induced by SPIF and the material degradation leading to localization and fracture. A systematic review of the state of the art about formability and damage in SPIF is presented and an extended Gurson–Tvergaard–Needleman (GTN) model was applied to predict damage in SPIF through finite element (FE) simulations. The line test was used to validate the simulations by comparing force and shape predictions with experimental results. To analyze the failure prediction, several simulations of SPIF cones at different wall angles were performed. It is concluded that the GTN model underestimates the failure angle on SPIF due to wrong coalescence modeling. A physically-based Thomason coalescence criterion was then used leading to an improvement on the results by delaying the onset of coalescence.
Disciplines :
Materials science & engineering
Mechanical engineering
Author, co-author :
Guzman, Carlos Felipe
Yuan, Sibo ;  Université de Liège > Département ArGEnCo > Département Argenco : Secteur MS2F
Duchene, Laurent  ;  Université de Liège > Département ArGEnCo > Analyse multi-échelles des matériaux et struct. du gén. civ.
Flores, Erick I. Saavedra
Habraken, Anne  ;  Université de Liège > Département ArGEnCo > Département ArGEnCo
Language :
English
Title :
Damage prediction in single point incremental forming using an extended Gurson model
Publication date :
2018
Journal title :
International Journal of Solids and Structures
ISSN :
0020-7683
eISSN :
1879-2146
Publisher :
Pergamon Press (part of Elsevier Science), Oxford, United Kingdom
Volume :
151
Pages :
45-56
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 29 June 2017

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