About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Algorithms Development in Materials Science and Engineering
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Presentation Title |
On the pressing, computed tomography (CT), mechanical experiments, and multiscale computational modeling with VVUQ of plastic-bonded composite granular materials |
Author(s) |
Richard Regueiro, Amy Clarke, Jed Brown, Alireza Doostan, Henry Tufo |
On-Site Speaker (Planned) |
Richard Regueiro |
Abstract Scope |
Is the change in mechanical behavior of Plastic-Bonded eXplosive (PBX) materials related to grain-size distribution or something else?
We cannot currently change parameters prior to pressing and track the effects through a tightly-integrated, grain-resolving, experimental-computational modeling framework upscaled to a micromorphic continuum-scale computational simulation accounting for grain-scale features in a computationally-more-tractable manner (than the grain-resolving DNS itself) without spatial-discretization-dependence.
The overarching problem is to quantify variation in press temperature on mechanical behavior of compressed pristine mock high explosive (HE) material subjected to quasi-static and high-strain-rate confined and unconfined compression, in-situ and ex-situ laboratory and synchrotron X-ray imaging and computed tomography (CT), and dynamic Kolsky bar experiments. The mock HE is composed of a mixture of ~1mm diameter agglomerated prills of idoxuridine (IDOX, average grain diameter ~200 micrometers) mixed with polymeric binder (nitroplasticized Estane).
A summary of the latest results across the Center will be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Mechanical Properties |