|

Shock Initiation of Cased Explosives by a High-Speed Striker with Warhead of Different Forms

Authors: Kobylkin I.F., Pavlova I.A. Published: 26.05.2017
Published in issue: #3(114)/2017  

DOI: 10.18698/0236-3941-2017-3-54-65

 
Category: Mechanics | Chapter: Mechanics of Liquid, Gas, and Plasma  
Keywords: cased explosive charge, shock initiation, shock wave, numerical simulation, decomposition kinetics

The article describes the results of numerical simulation of shock initiation process in the 5 mm-thick steel shell-cased explosive charges when compact strikers affect spherical and conical warheads and the flat face. We identified the critical velocity of shock initiation for charges with composition B and TNT under the impact of 10...16 mm-diameter strikers.

References

[1] Kobylkin I.F., Selivanov V.V. Vozbuzhdenie i rasprostranenie vzryvnykh prevrashcheniy v zaryadakh vzryvchatykh veshchestv [Explosive transformation incitation and propagation in explosive charges]. Moscow, Bauman MSTU Publ., 2015. 354 p.

[2] Bahl K.L., Vantine H.C., Weingart R.C. The shock initiation of bare and covered explosive by projectile impact. The 7th Symp. (Intern.) on Detonation, Annapolis (Maryland, USA), 1981, pp. 858-863.

[3] Dobratz B.M., Crawford P.C. Properties of chemical explosives and explosive simulants. LLNL, University of California, Livermore, 1985.

[4] AutodynTM. Interactive non-linear analysis software. Theory manual. Century Dynamics Inc., 1998. 244 p.

[5] Orlenko L.P., ed. Fizika vzryva. T. 1 [Physics of explosions. Vol. 1]. Moscow, Fizmatlit Publ., 2004. 832 p.

[6] Orlenko L.P., ed. Fizika vzryva. T. 2 [Physics of explosions. Vol. 2]. Moscow, Fizmatlit Publ., 2004. 656 p.

[7] Lee E.L., Tarver C.M. Phenomenological model of shock initiation in heterogeneous explosives. Phys. Fluids, 1980, vol. 23, no. 12, pp. 2362-2372. DOI: 10.1063/1.862940 Available at: http://aip.scitation.org/doi/abs/10.1063/1.862940

[8] Urtiew P.A., Vandersall K.S., Tarver C.M., Frank G., Forbes J.W. Shock initiation experiments and modeling of composition B and C-4. 13th International Detonation Symposium, Norfolk, VA, United States July 23-28, 2006.