Effect of material model on finite element modeling of aerospace alloys

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DOIResolve DOI: http://doi.org/10.4028/www.scientific.net/KEM.554-557.151
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TypeArticle
Proceedings titleKey Engineering Materials
Conference16th ESAFORM Conference on Material Forming, ESAFORM 2013, 22 April 2013 through 24 April 2013, Aveiro
ISSN1013-9826
ISBN9783037857199
Volume554-557
Pages151156; # of pages: 6
SubjectConstitutive law; Expansion tests; Friction conditions; Hydroforming; Hydroforming technology; Material characteristics; Thickness reduction; Tube bulge; Aerospace industry; Cerium alloys; Expansion; Experiments; Friction; Materials; Metal forming; Finite element method
AbstractIncreasing acceptance and use of hydroforming technology within the aerospace industry requires a comprehensive understanding of critical issues such as the material characteristics, friction condition and hydroformability of the material. Moreover, the cost of experiments can be reduced by accurate finite element modeling (FEM) entails the application of adapted constitutive laws for reproducing with confidence the material behavior. In this paper, the effect of different constitutive laws on FEM of tubular shapes is presented. The free expansion process was considered for developing the FEM. Bulge height, thickness reduction and strains were determined at the maximum bulge height using different constitutive models, including Hollomon, Ludwik, Swift, Voce and Ludwigson. In order to minimize the effect of friction, the free expansion experiments were performed with no end feeding. The simulation results were compared with the experimental data to find the appropriate constitutive law for the free expansion process. Copyright © 2013 Trans Tech Publications Ltd.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21269636
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Record identifier64b73ecd-946a-409a-b00c-8b837f3b154e
Record created2013-12-13
Record modified2016-05-09
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