Finite Element analysis of aluminum tube hydroforming based on non-quadratic yield function
by Farhang Pourboghrat, Yabo Guan, Frederic Barlat
International Journal of Manufacturing Technology and Management (IJMTM), Vol. 14, No. 1/2, 2008

Abstract: Although very accurate in representing the material anisotropy, finite element analysis based on direct use of a polycrystal model is CPU-intensive (Guan et al., 2006a). In the present study, this Taylor-type polycrystalline model was firstly used to predict the anisotropy coefficients of Yld96 yield function. Then this phenomenological anisotropic yield function was implemented into ABAQUS/Standard finite element code, using UMAT, for the hydroforming simulation of a 6061-T4 extruded aluminum tube. It was shown that compared with von Mises (1913) and Hill's (1948) yield function, the Yld96 material model's predictions are in better agreement with experimental data.

Online publication date: Wed, 12-Mar-2008

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