Effect of Material Model on Finite Element Modeling of Aerospace Alloys

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原文链接

NETL
Trans Tech Publications Ltd

外文摘要：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。

外文关键词：

Free expansion testTube bulge testConstitutive lawHydroforming

作者：

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

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作者单位：

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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会议名称：

ESAFORM conference on material forming

会议地点：

Aveiro(PT)

会议母体文献：

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

页码：

151-156

出版时间：

2013

DOI：

10.4028/www.scientific.net/KEM.554-557.151