Texture-Based Explicit Finite-Element Analysis of Sheet Metal Forming
An explicit integration algorithm using a texture-based plastic potential and isotropic hardening has been developed and implemented into a commercial explicit finite-element software program through a user material subroutine (VUMAT in ABAQUS/Explicit). Simulations of cup drawing of an IF-steel are presented and compared to both experimental data and calculation results obtained with a previously developed fully implicit approach (UMAT in ABAQUS/Standard). The explicit formulation has the advantage of being more stable, but local sheet thickness variations cannot be reproduced with the same accuracy.
Paul Van Houtte and Leo Kestens
S. Ristić et al., "Texture-Based Explicit Finite-Element Analysis of Sheet Metal Forming", Materials Science Forum, Vols. 495-497, pp. 1535-1540, 2005