Prediction of Initial Temperature Effects on Shock Initiation of Solid Explosives by Using Mesoscopic Reaction Rate Model

Duan, Zhuo-Ping; Liu, Yiru; Zhang, Zhenyu; Ou, Zhuo-Cheng; Huang, Fenglei

doi:10.1515/ijnsns-2013-0056

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…The environmental temperature has been demonstrated to influence shock ignition and growth of PBXs [6][7][8]. Tarver et al [9] conducted a series of experiments on the HMX-based explosive PBX9501 at initial temperatures 25 °C and 50 °C under plate impact.…”

Section: Introductionmentioning

confidence: 99%

Shock Ignition and Growth of HMX-based PBXs under Different Temperature Conditions

Li¹,

Han²,

Li³

et al. 2019

Cent. Eur. J. Energ. Mater.

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The Lagrange test was conducted to investigate the shock ignition and growth of HMX-based polymer bonded explosives (PBXs) under different temperature conditions. In this study, three temperature conditions, 25 °C, 80 °C and 120 °C were used. The pressure history values along the direction of the detonation wave propagation were obtained and presented as the characteristics of the shock ignition and growth. Manganin piezoresistive pressure gauges were used to measure the pressure. The results showed that the distance to detonation was clearly reduced as the temperature was increased. A distance greater than 9 mm at 25 °C was changed to less than 3 mm at 120 °C. In order to understand this phenomenon in more detail, the Lee-Tarver ignition and growth model was employed to simulate the Lagrange test, and the simulated pressures were compared with the measured pressures. The results demonstrated that the intrinsic mechanism of the phenomenon was that the high temperature changed both the equation of state of the unreacted explosive and the chemical reaction rate. It was remarkable that the parameter R2 in the model was reduced from −0.05835 to −0.06338, and the parameter G1 in the model was increased from 1.3 to 2.12.

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Section: Introductionmentioning

confidence: 99%

Shock Ignition and Growth of HMX-based PBXs under Different Temperature Conditions

Li¹,

Han²,

Li³

et al. 2019

Cent. Eur. J. Energ. Mater.

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show abstract

“…Recently, based on Kim’s elastic/viscoplastic pore collapse model, 22,23 Duan et al 24 developed a hot-spot ignition model in which the collapsing of pores in solid explosives by mechanical compression is considered as solely responsible for ignition. Duan’s ignition model (later named the DZK hot-spot model 25 ) was complemented with a growth term for slow burning, as proposed in Kim’s model, 23 and a high-pressure fast-burning term, suggested by Zhang. 26 The DZK reaction rate model is thus a kind of ignition and growth model, where the ignition term is based on the collapsing of the pores, while the growth terms are based on the burning topology of pores.…”

Section: Introductionmentioning

confidence: 99%

“…26 The DZK reaction rate model is thus a kind of ignition and growth model, where the ignition term is based on the collapsing of the pores, while the growth terms are based on the burning topology of pores. The DZK reaction rate model has been implemented in DYNA-2D software and has predicted well the effects of the particle size, 27 the strength and content of the binder in a PBX explosive, 28 the porosity of the explosive 28 and the effect of initial temperature 25 on the shock initiation.…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of preshock desensitization in heterogeneous explosives using a mesoscopic reaction rate model

et al. 2015

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To understand and predict the response of explosive materials, numerical models are utilized to simulate various scenarios. Various hazard and vulnerability scenarios for explosives involve multiple shock compression. In the present study, a kind of mesoscopic model for shock ignition of solid heterogeneous explosives is examined in order to demonstrate its availability to account for the desensitization caused by multiple shocks in explosives. Since the mesoscopic model is based on the assumption of the elastic viscoplastic pore collapse mechanism, and on the other hand the desensitization mechanism is also usually described in connection with the closure of pores, the ability of the mesoscopic model to predict the desensitization effects must be analyzed. For this purpose, the mesoscopic model has been implemented in a hydrodynamic code (LS-DYNA) as a user-defined equation of state. For verification, the double shock, reflected shock and detonation-quenching experiments have been modeled and simulated. The data show that the model can reproduce various features of some of the previously reported experiments involving the preshock desensitization of solid explosives.

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A mesoscopic reaction rate model for shock-to-detonation of PBX explosives having different mean particle sizes

Liu

Duan

et al. 2018

Shock Waves

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Prediction of Initial Temperature Effects on Shock Initiation of Solid Explosives by Using Mesoscopic Reaction Rate Model

Cited by 7 publications

References 10 publications

Shock Ignition and Growth of HMX-based PBXs under Different Temperature Conditions

Shock Ignition and Growth of HMX-based PBXs under Different Temperature Conditions

Modeling and simulation of preshock desensitization in heterogeneous explosives using a mesoscopic reaction rate model

A mesoscopic reaction rate model for shock-to-detonation of PBX explosives having different mean particle sizes

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