About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Modeling the Physical Process of Adiabatic Shear Banding |
Author(s) |
Curt A. Bronkhorst, Jack Rees, Janith Wanni, Dan Thoma |
On-Site Speaker (Planned) |
Curt A. Bronkhorst |
Abstract Scope |
Withing a computational framework for modeling shear localization, we present a new physical model for the plastic deformation of metallic materials which accounts for softening due to increased dislocation mobility with heating and dynamic recrystallization which also predicts an evolving Taylor-Quinney factor with material state. This is used within a non-local computational framework for adiabatic shear banding which explicitly represents the shear zone by a weak form embedded displacement discontinuity region. A model for the thickness dimension of the adiabatic shear band and the embedded computational region based upon material properties and loading conditions is employed. The theory and computational framework are used to describe specific experiments performed on a low carbon steel and stainless steel loaded dynamically. Physical insights into the shear banding process will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Mechanical Properties, Iron and Steel |