首页|Effect of Material Model on Finite Element Modeling of Aerospace Alloys

Effect of Material Model on Finite Element Modeling of Aerospace Alloys

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Increasing 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。

Free expansion testTube bulge testConstitutive lawHydroforming

M.Saboori、J.Gholipour、H.Champliaud、A.Gakwaya、J.Savoie、P.Wanjara

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Ecole de technologie superieure, Montreal, Canada,National Research Council of Canada, Aerospace, Montreal, Canada

National Research Council of Canada, Aerospace, Montreal, Canada

Ecole de technologie superieure, Montreal, Canada

Laval University, Quebec city, Canada

Pratt & Whitney Canada, Special Process Development Group, Longueuil, Canada

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ESAFORM conference on material forming

Aveiro(PT)

The current state-of-the-art on material forming : Numerical and experimental approaches at different length-scales

151-156

2013