|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||A Predictive Multisurface Approach to Damage Modeling in Mg Alloys
||Vigneshwaran Radhakrishnan, Amine Benzerga
|On-Site Speaker (Planned)
Two independent developments of multi-surface plasticity are consistently combined towards developing a robust method for predictive modeling of ductile damage in Mg alloys. The first development concerns a two-surface, pressure-insensitive plasticity model to describe the mechanical behavior of damage-free materials. The two surfaces separately account for the primary deformation mechanisms of glide and twinning. The model captures the 3D plastic anisotropy and the tension-compression asymmetry as the behavior evolves during straining. The second development concerns the effective behavior of porous plastic materials. Two or more surfaces account for one mode of homogeneous yielding (void growth in triaxial tension) and one or more modes of inhomogeneous yielding (void coalescence in triaxial tension and void distortion under severe shear). The model captures failure by internal necking or by void-sheet coalescence quite well.
||ICME, Modeling and Simulation, Mechanical Properties