|About this Abstract
||NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
||Enhanced Isotropic Hardening Modeling of Orthotropic Sheet Metals
||Wei Tong, Mohammed Albarbi, Jie Sheng
|On-Site Speaker (Planned)
In anisotropic plasticity modeling of sheet metals, isotropic hardening refers to the shape of a yield surface of a sheet metal remains the same while its size expands with increasing plastic deformation. Anisotropic hardening deals with the more general case when the shape of the initial yield surface also evolves or distorts with subsequent plastic deformation. It was shown in this study that one may use the so-called enhanced isotropic hardening to model the differential strain hardening behavior of a sheet metal with constant plastic strain ratios. Both quadratic and non-quadratic orthotropic stress functions with the enhanced isotropic hardening were evaluated for describing the in-plane uniaxial tension, plane-strain tension and simple shear tests of an aluminum sheet metal. The similarities and differences between the enhanced isotropic hardening and anisotropic hardening modeling approaches are compared in some details.
||Definite: At-meeting proceedings