Authors: Farhang Pourboghrat, Yabo Guan, Frederic Barlat
Addresses: Department of Mechanical Engineering, Michigan State University, East Lansing, MI, 48824-1226, USA. ' Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA. ' Alcoa Technical Center, 100 Technical Drive, Alcoa Center, PA 15069-0001, USA
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.
Keywords: polycrystalline modelling; texture; yield function; finite element analysis; FEA; tube hydroforming; aluminum tube hydroforming.
International Journal of Manufacturing Technology and Management, 2008 Vol.14 No.1/2, pp.84 - 99
Published online: 12 Mar 2008 *Full-text access for editors Access for subscribers Purchase this article Comment on this article