|About this Abstract
||NUMIFORM 2019: The 13th International Conference on Numerical Methods in Industrial Forming Processes
||S-01: Modeling of the Anisotropic Behavior in Plasticity
||An Application of Homogeneous Anisotropic Hardening Model to Earing Predictions of Pre-strained Material
||Seong-Yong Yoon, Min-Su Wi, Shin-Yeong Lee, Frédéric Barlat
|On-Site Speaker (Planned)
In this article, the influence of strain-path change on the resulting geometry of a cup after drawing was investigated. To assess the effect, an extra-deep-drawing quality (EDDQ) steel was pre-strained about 6.5% in uniaxial tension along the rolling direction (RD) after which, circular blanks were machined and drawn with a circular punch. The cup height profiles of the as-received and pre-deformed materials were measured and compared. According to the experimental results, the pre-strained material exhibits a higher anisotropic behavior. The cup drawing process was simulated using a finite element (FE) analysis with a constitutive behavior consisting of an anisotropic yield condition evolving using the homogeneous anisotropic hardening (HAH) model. This distortional plasticity approach was shown to account for strain-path change after pre-straining during forming simulations reasonably well.