Hot spot ignition and growth from tandem micro-scale simulations and experiments on plastic-bonded explosives

S Roy, BP Johnson, X Zhou, YT Nguyen… - Journal of Applied …, 2022 - pubs.aip.org
Head-to-head comparisons of multiple experimental observations and numerical
simulations on a deconstructed plastic-bonded explosive consisting of an octahydro-1, 3, 5 …

Multi-scale modeling of shock initiation of a pressed energetic material III: Effect of Arrhenius chemical kinetic rates on macro-scale shock sensitivity

P Parepalli, YT Nguyen, O Sen, DB Hardin… - Journal of Applied …, 2024 - pubs.aip.org
Multi-scale predictive models for the shock sensitivity of energetic materials connect energy
localization (“hotspots”) in the microstructure to macro-scale detonation phenomena …

Physically evocative meso-informed sub-grid source term for energy localization in shocked heterogeneous energetic materials

YT Nguyen, PK Seshadri, HS Udaykumar - Journal of Applied Physics, 2023 - pubs.aip.org
Reactive burn models for heterogeneous energetic materials (EMs) must account for
chemistry as well as microstructure to predict shock-to-detonation transition (SDT). Upon …

[HTML][HTML] Meso-scale simulation of energetic materials. I. A method for generating synthetic microstructures using deep feature representations

S Roy, YT Nguyen, C Neal, S Baek… - Journal of Applied …, 2022 - pubs.aip.org
The response of a wide class of heterogeneous energetic materials (HEs) to loads is
determined by dynamics at the meso-scale, ie, by physicochemical processes in their …

[HTML][HTML] Johnson–Cook yield functions for cyclotetramethylene-tetranitramine (HMX) and cyclotrimethylene-trinitramine (RDX) derived from single crystal plasticity …

O Sen, PK Seshadri, NK Rai, J Larentzos… - Journal of Applied …, 2024 - pubs.aip.org
High-fidelity constitutive models are critical for accurate meso-scale continuum modeling
and prediction of shock initiation of crystalline energetic materials (EMs). While empirically …