2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 3
Horstemeyer Intl.Symp.
Multiscale Materials Mechanics & Applications
| Editors: | F. Kongoli,E. Aifantis, A, Konstantinidis, D, Bammann, J. Boumgardner, K, Johnson, N, Morgan, R. Prabhu, A. Rajendran |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2022 |
| Pages: | 382 pages |
| ISBN: | 978-1-989820-38-4(CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Modeling Damage, Recrystallization, and Texture Using an Internal State Variable Framework with Application to Mantle Dynamics Processes
Douglas Bammann1; John Baumgardner2; Mark Horstemeyer2;1MISSISSIPPI STATE UNIVERSITY, Mississippis State, United States; 2LIBERTY UNIVERSITY, Lynchburg, United States;
Type of Paper: Regular
Id Paper: 566
Topic: 1
Abstract:
We add damage, recrystallization, and texture treatments to the Bammann inelasticity internal state variable (BIISV) model framework to significantly improve the representation of the deformation-related processes in the earth’s mantle. We implement these additional features into the existing BIISV model in TERRA2D and show that all three physical mechanisms exert considerable influence on the flow history in simple 2D internally heated convection test cases. Using the enhanced BIISV framework we perform a limited parametric study to explore the model’s effects on stability of the cold upper thermal boundary layer. As expected the damage and recrystallization treatments enhance the cold upper thermal boundary layer’s tendency to weaken and plunge into the hotter region below. The texture treatment increases the intensity of rotational flow within the hotter zone as cold boundary material plunges downward which in turn aids in destabilizing the cold upper thermal boundary layer. Having all these treatments in a single integrated rheological framework that tracks internal history variables in a common manner represents a significant advance in handling deformational physics for mantle phenomena in a comprehensive, unified, and automatic manner.