Abstract
Due to their crystallographic texture, sheet metals generally present a significant anisotropy. The DD13 sheet metal is one of the hot-rolling steels, also called mild steels that is designed for deep and extra deep drawing applications. It is characterized by high fracture elongation and suitable for chassis components and wheel outer borders. A finite element (FE) -implementation of an anisotropic plasticity model coupled with damage and isotropic hardening for the DD13 metal in low velocity impact simulations is performed. The elasto-plastic model includes isotropic elasticity, anisotropic yielding, associated plastic flow and isotropic hardening. The plastic-damage model is implemented into a user-defined material (VUMAT) subroutine for the commercial finite element code ABAQUS/Explicit. Material properties are defined using the experimental results of (Ghorbel et al (2019) Int J Mech Sci 150:548–560, [1]). A parametric study of the effect of anisotropy, -plate thickness and impactor properties is carried out. The numerical results of the impact force history and impact velocity are discussed and validated.
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