| Autor: |
Zapp, Ryan E., Schill, William J., Myint, Philip C., Belof, Jonathan L. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3066 Issue 1, p1-7, 7p |
| Abstrakt: |
We propose a phase-transition kinetics model between solid states of matter at extreme pressures based on a hierarchy of symmetry-breaking defects. In this hierarchy, phase boundaries are thought of as 2D defects breaking translational symmetry of the solid. Their motion is mediated by 1D defects, known as disconnections, propagating within the 2D interfacial manifold. Finally, the motion of these disconnections is mediated by 0D kinks, which move within the 1D line defect. The 0D kink motion is modeled with an Arrhenius-type equation and serves as a connection between atomic and macroscopic behavior for the multiscale model. We then describe the formulation and implementation of this model in a hydrocode setting and use it to study dynamic-compression experiments. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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