Detonation waves in trinitrotoluene

Kury, J.W.; Breithaupt, Ralph; Tarver, Craig M.

doi:10.1007/s001930050160

Cited by 57 publications

(26 citation statements)

References 12 publications

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“…5) models a wall shock to detonation in TNT. In this case, the velocity field in the vicinity of the wall is initialized to 5.6 km/s [10]. The simulation assumes JWL equations of state for the solid reactant and 080006-3 gas product, and an 'ignition and growth' model for the explosive (both are taken from the published literature [11]).…”

Section: Example Simulationsmentioning

confidence: 99%

Nonholonomic Hamiltonian method for meso-macroscale simulations of reacting shocks

Lee¹,

Fahrenthold²

2017

AIP Conference Proceedings

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Abstract. The seamless integration of macroscale, mesoscale, and molecular scale models of reacting shock physics has been hindered by dramatic differences in the model formulation techniques normally used at different scales. In recent research the authors have developed the first unified discrete Hamiltonian approach to multiscale simulation of reacting shock physics. Unlike previous work, the formulation employs reacting themomechanical Hamiltonian formulations at all scales, including the continuum. Unlike previous work, the formulation employs a nonholonomic modeling approach. Example applications of the method include mesoscale simulations of hot spot formation and macroscale simulations of shock to detonation.

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Section: Example Simulationsmentioning

confidence: 99%

Nonholonomic Hamiltonian method for meso-macroscale simulations of reacting shocks

Lee¹,

Fahrenthold²

2017

AIP Conference Proceedings

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“…Two of the most important detonation performance parameters that represent the effectiveness of different explosives are the detonation velocity and detonation pressure (Chapman-Jouguet, C-J) [11,18,19]. Detonation velocity is the speed at which the detonation wave travels through the explosive [17,18].…”

Section: Phase I: Water Mist System and Characterizationmentioning

confidence: 99%

“…Detonation velocity is the speed at which the detonation wave travels through the explosive [17,18]. Both parameters are dependent on the material's heat of detonation, charge density, and composition [11,18,19]. Table 4 shows the performance parameters for TNT and how they compare to other TNT and RDX based explosives.…”

Section: Phase I: Water Mist System and Characterizationmentioning

confidence: 99%

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Blast Mitigation Using Water Mist: Test Series II

Willauer¹,

Ananth²,

Farley³

et al. 2009

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Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39.18Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. The effects water mist has on the overpressures produced by the detonation of 50 lb equivalent of high explosives (HE) TNT, Destex, and PBXN-109 in a chamber is reported. The overpressures for each charge density were measured with and without mist preemptively sprayed into the space. The impulse, initial blast wave, and quasi-static overpressure measured in the blast mitigation experiments were reduced by as much as (40%, 36%, and 35%) for 50 lbs TNT, (43%, 25%, and 33%) for 50 lbs TNT equivalent Destex, and (49%, 39%, and 41%) for 50 lbs TNT equivalent PBXN-109 when water mist was sprayed 60 seconds prior to detonation at a concentration of 70 g/m 3 and droplet Sauter Mean Diameter (SMD) of 54 mm. These results suggest that current water mist technology is a potentially promising concept for the mitigation of overpressure effects produced from the detonation of high explosives. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S ACRONYM(S) 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S REPORT NUMBER(S)

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“…Brought to you by | MIT Libraries Authenticated Download Date | 5/12/18 7:50 AM P. Kędzierski, A. Morka, G. Sławiński, and T. Niezgoda the shock wave velocity -particle velocity curve, and E is internal energy, µ = (ρ/ρ 0 ) − 1.The material data for the JC model and the Gruneisen EOS applied in this work are listed in Table 2 [19][20][21][22][23]. In order to describe the constitutive response of Al 2 O 3 ceramics, the Johnson-Holmquist (JH2) model was employed.…”

mentioning

confidence: 99%

Optimization of two-component armour

Kędzierski¹,

Morka²,

Sławiński³

et al. 2015

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The paper presents research on optimization of two-layer armour subjected to the normal impact of the 7.62x54 B32 armour piercing (AP) projectile. There were analysed two cases in which alumina Al2O3 was supported by aluminium alloy AA2024-T3 or armour steel Armox 500T. The thicknesses of layers were determined to minimize the panel areal density whilst satisfying the constraint, which was the maximum projectile velocity after panel perforation. The problem was solved through the utilization of LS-DYNA, LS-OPT and HyperMorph engineering software. The axisymmetric model was applied to the calculation in order to provide sufficient discretization. The response of the aluminium alloy, armour steel and projectile material was described with the Johnson-Cook model, while the one of the alumina with the Johnson-Holmquist model. The study resulted in the development of a panel optimization methodology, which allows the layer thicknesses of the panel with minimum areal density to be determined. The optimization process demonstrated that the areal density of the lightest panel is 71.07 and 71.82 kg/m 2 for Al2O3-Armox 500T and Al2O3-AA2024-T3, respectively. The results of optimization process were confirmed during the experimental investigation.

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Detonation waves in trinitrotoluene

Cited by 57 publications

References 12 publications

Nonholonomic Hamiltonian method for meso-macroscale simulations of reacting shocks

Nonholonomic Hamiltonian method for meso-macroscale simulations of reacting shocks

Blast Mitigation Using Water Mist: Test Series II

Optimization of two-component armour

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