Shock to detonation transition of pentaerythritol tetranitrate (PETN) initially pressed to 1.65 g/cm3

Aslam, Tariq D.; Bolme, C. A.; Ramos, Kyle; Cawkwell, Marc; Ticknor, Christopher; Price, Matthew A.; Leiding, Jeffery A.; Sanchez, Nathaniel; Andrews, Stephen A.

doi:10.1063/5.0054856

Cited by 11 publications

(16 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two unconfined rate sticks and one CYLEX test were fielded, with dimensions as provided in Table 1. All tests were assembled from pressed PETN pellets with a nominal density of 1.65 g/cm 3 . Measurements of 24 individual pellets yielded a mean diameter of 3.01 mm with a standard deviation of 0.0017 mm and a mean length of 2.54 mm with a standard deviation of 0.0074 mm.…”

Section: Methodsmentioning

confidence: 99%

“…Our model analysis uses a modern programmed burn (PB) methodology [9][10][11] for calibration of PETN at 1.65 g/cm 3 . Our chosen methodologies to represent the sub-scale timing and energy release modeling components of this PB method are described in the following sections.…”

Section: Model Calibration Analysismentioning

confidence: 99%

“…The present results can be compared to prior PETN measurements at other pressing densities. Figures 6 and 7 include the product isentropes in pressure and energy (as offset by the Rayleigh energy 1=2p CJ ðu 0 À u CJ Þ) for the present density of 1.65 g/cm 3 along with those from Souers and Kury [2] for 1.263, 1.503, and 1.763 g/cm 3 , respectively. The The model-derived CJ state characteristics of an explosive can be used to place an explosive's performance in the context of other explosives.…”

Section: Scaling Analysismentioning

confidence: 99%

“…First, the large operational density range of PETN requires a significant number of tests to characterize experimentally. For example, prior data only addresses three initial densities of 1.263, 1.503, and 1.763 g/cm 3 with cylinder expansion tests (CYLEXs) to characterize the product EOS [2]. Additionally, its short reaction zone [3,4] requires test assemblies to be very small relative to other common explosives (e. g., HMX, Comp B, and TATB) to quantify the effect of confinement and geometry on the explosive performance [5].…”

Section: Introductionmentioning

confidence: 99%

“…Another potential problem is that the thin wall associated with scaled-down cylinder expansion tests may fail prematurely during expansion due to the presence of an insufficient number of copper grains across the thickness of the wall [6]. In this study, PETN rate sticks and cylinder tests are fielded at the smallest known scales (3-mm HE diameter) at a density of 1.65 g/cm 3 . This work, therefore, provides the first front shape measurements of PETN, and this yields a Detonation Shock Dynamics (DSD) propagation law [7] for more accurate sub-scale detonation propagation calculations.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Detonation Performance Experiments, Modeling, and Scaling Analysis for Pentaerythritol Tetranitrate (PETN) High Explosive

Chiquete

Chicas

Jackson

2022

Propellants Explo Pyrotec

View full text Add to dashboard Cite

Pentaerythritol tetranitrate (PETN) is a commonly used high explosive (HE) for detonator, fusing, and booster assemblies. Despite its popularity, detailed detonation performance data is relatively sparse. The large operational density range of PETN requires a significant number of tests to characterize experimentally. Additionally, its short reaction zone requires test assemblies to be very small relative to other common explosives to quantify the effect of confinement and geometry on the explosive performance. In this study, PETN rate sticks and cylinder tests are fielded at the smallest known scales (3‐mm HE diameter) at a density of 1.65 g/cm3. The resulting data verifies that the flow satisfies continuum measurement at this scale, and analysis yields a Detonation Shock Dynamics (DSD) propagation law and Jones‐Wilkins‐Lee (JWL) product EOS for programmed burn detonation modeling. This work also provides the first recorded front shape measurements of PETN. Together with previously obtained data and models for other explosive densities, a scaling analysis is presented of the detonation performance of PETN for a wide range of explosive densities.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Model Calibration Analysismentioning

confidence: 99%

Section: Scaling Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Detonation Performance Experiments, Modeling, and Scaling Analysis for Pentaerythritol Tetranitrate (PETN) High Explosive

Chiquete

Chicas

Jackson

2022

Propellants Explo Pyrotec

View full text Add to dashboard Cite

show abstract

Computational high‐pressure chemistry: Ab initio simulations of atoms, molecules, and extended materials in the gigapascal regime

Zeller,

Hsieh,

Dononelli

et al. 2024

WIREs Comput Mol Sci

View full text Add to dashboard Cite

The field of liquid‐phase and solid‐state high‐pressure chemistry has exploded since the advent of the diamond anvil cell, an experimental technique that allows the application of pressures up to several hundred gigapascals. To complement high‐pressure experiments, a large number of computational tools have been developed. These techniques enable the simulation of chemical systems, their sizes ranging from single atoms to infinitely large crystals, under high pressure, and the calculation of the resulting structural, electronic, and spectroscopic changes. At the most fundamental level, computational methods using carefully tailored wall potentials allow the analytical calculation of energies and electronic properties of compressed atoms. Molecules and molecular clusters can be compressed either via mechanochemical approaches or via more sophisticated computational protocols using implicit or explicit solvation approaches, typically in combination with density functional theory, thus allowing the simulation of pressure‐induced chemical reactions. Crystals and other periodic systems can be routinely simulated under pressure as well, both statically and dynamically, to predict the changes of crystallographic data under pressure and high‐pressure crystal structure transitions. In this review, the theoretical foundations of the available computational tools for simulating high‐pressure chemistry are introduced and example applications demonstrating the strengths and weaknesses of each approach are discussed.This article is categorized under: Structure and Mechanism > Computational Materials Science Electronic Structure Theory > Ab Initio Electronic Structure Methods Software > Simulation Methods

show abstract

Equation of State for Single Crystal 3,3′-Diamino-4,4′-azoxyfurazan

Cawkwell

2024

J. Phys. Chem. C

Self Cite

View full text Add to dashboard Cite

Tabular and Debye equations of state (EoS) have been developed for single crystal 3,3′-diamino-4,4′-azoxyfurazan (DAAF) from density functional theory calculations of the static lattice energy (i.e., the cold curve) and the dependence of the frequencies of the vibrational normal modes on specific volume. The cold curves are represented by the three parameter MACAW reference curve developed by Lozano and Aslam. The thermal ionic contributions to the Helmholtz free energy are either interpolated and tabulated in a SESAME table or represented by a sum of five Debye models with volume-dependent Debye temperatures. The agreement between the two EoS and with the available experiments is generally good. We provide predictions for the Hugoniot locus up to 40 GPa and the temperature dependence of the heat capacity up to 2000 K. Tensors of second and third order elastic constants calculated using density functional theory, which enable the calculation of the thermoelastic free energy of DAAF under large lattice strains that probe the anharmonicity of the interatomic forces, are also reported.

show abstract

Shock to detonation transition of pentaerythritol tetranitrate (PETN) initially pressed to 1.65 g/cm3

Cited by 11 publications

References 40 publications

Detonation Performance Experiments, Modeling, and Scaling Analysis for Pentaerythritol Tetranitrate (PETN) High Explosive

Detonation Performance Experiments, Modeling, and Scaling Analysis for Pentaerythritol Tetranitrate (PETN) High Explosive

Computational high‐pressure chemistry: Ab initio simulations of atoms, molecules, and extended materials in the gigapascal regime

Equation of State for Single Crystal 3,3′-Diamino-4,4′-azoxyfurazan

Contact Info

Product

Resources

About