About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Reduction of Richtmyer-Meshkov Instabilities via Layered Explosive Charge Design |
Author(s) |
Michael Hennessey, H. Keo Springer, Jon Belof |
On-Site Speaker (Planned) |
Michael Hennessey |
Abstract Scope |
This study details the optimization of layered explosive charge geometries to reduce Richtmyer-Meshkov instability (RMI) in metal plates with sinusoidal surface features through numerical simulation. The impact of a detonation wave from a high explosive (HE) charge on a metal target results in shock refraction at the interface between the two materials. For a target with an unconfined surface opposite the HE-target interface, the shock refraction results in complex wave behavior related to Mach-stem interaction within the target ultimately leading to the formation of RMI at the unconfined surface of the target. The reduction of this instability is investigated in a two-fold manner: first by varying the charge design and composition, and second by varying the initial design of the unconfined surface of the target. Within a limited scope of this design space, a wide variety of behaviors related to the RMI growth (or suppression thereof) are observed and investigated. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |