Numerical modeling of sympathetic detonation

Bowman, A.L.; Kershner, J.D.; Mader, Charles L.

doi:10.2172/5770075

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…The estimated fraction reacted increased with the increase of detonation velocity and pressure and the values were in a range of 58 to 85 %. These values show the coincidence with the calculation for ANFO done by Mader [9]. Although the estimated fraction reacted of detonation velocity showed a good agreement with D obs /D cal values for each condition, those of pressure didn't show an agreement with P obs /P cal values.…”

Section: Resultssupporting

confidence: 86%

Detonation Velocity and Pressure of Ammonium Nitrate and Activated Carbon Mixtures

Miyake

Echigoya

Kobayashi

et al. 2007

MSF

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To obtain a better understanding of detonation properties of ammonium nitrate (AN) and activated carbon (AC) mixtures, steel tube test was carried out for stoichiometric composition of powdered AN and AC mixtures and the detonation velocity and the pressure profile were measured. Based on the results obtained the relation between the detonation velocity and the peak pressure was discussed with the theoretically predicted values which were obtained by the thermohydrodynamic CHEETAH code with the BKWC equation of state. The measured detonation velocity and peak pressure were far below the theoretically predicted values and the non-ideal detonation behaviour was confirmed.

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Section: Resultssupporting

confidence: 86%

Detonation Velocity and Pressure of Ammonium Nitrate and Activated Carbon Mixtures

Miyake

Echigoya

Kobayashi

et al. 2007

MSF

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“…The suspension method is widely accepted to measure the sym pathetic detonation of commercial explosives by observing if there is any residual explosive in the blasting area. Other judging means includes an indicator plate [34][35][36][37] and the optical method [38,39].…”

Section: Introductionmentioning

confidence: 99%

New approaches for evaluating detonation properties of commercial explosives using a novel continuous velocity probe

Yan

et al. 2018

Meas. Sci. Technol.

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In order to build a set of test methods for quantified and efficient evaluation of the detonation properties of commercial explosives, three pressure-conducted types of novel velocity probes have been developed. The LS-DYNA program is used to estimate the conduction pressure and an underwater explosion test is performed to demonstrate the ability of recording the continuous travel trajectory of detonation and shock wave, which indicates that the threaded wire with metal foil (TW/MF) probe shows the most satisfactory performance. Using this probe, various test methods are built to determine the detonation properties of commercial explosives, i.e. detonation velocity, critical diameter and thickness, sympathetic detonation and C–J pressure. The results show that continuous measuring systems based on the TW/MF velocity probe can be successfully applied in the evaluation of the performances of commercial explosives, which is superior to the conventional approaches in measurement accuracy, convenience, uniformity and quantification.

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“…To confirm the reliability of theoretical model and parameters used in this paper, we calculated the detonation properties of a variety of explosives, see the Table 1. Detonation velocities and detomation pressures of eight kinds of explosives calculated in our work as well as experimental data [14] are listed in Table 1. From the comparison, we find that the calculated value in this paper is well consistent with the experimental data.…”

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Equation of State of Detonation Products Based on Chemical Equilibrium

Zhao

Liu

Pang

2013

AMR

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An equation of state (EOS) model of detonation products based on chemical equilibrium is developed. The EOS of gaseous detonation products is described by Rosss modification of hard-sphere variation theory and the improved one-fluid van der Waals mixture model. The condensed phases of carbon are taken as a mixture of graphite, diamond, graphite-like liquid and diamond-like liquid. For a mixed system of detonation products, the free energy minimization principle is used to determine the equilibrium compositions of detonation products by solving chemical equilibrium equations. The potential function parameters have been renewed and the non-ideal fixing effects of the major detonation products have been taken into account. The calculated detonation parameters in our work for a variety of explosives are well in agreement with the experimental data.

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Numerical modeling of sympathetic detonation

Cited by 3 publications

References 3 publications

Detonation Velocity and Pressure of Ammonium Nitrate and Activated Carbon Mixtures

Detonation Velocity and Pressure of Ammonium Nitrate and Activated Carbon Mixtures

New approaches for evaluating detonation properties of commercial explosives using a novel continuous velocity probe

Equation of State of Detonation Products Based on Chemical Equilibrium

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