Advanced SearchSearch Tips
A Study on Shock-induced Detonation in Gap Test
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on Shock-induced Detonation in Gap Test
Kim, Bohoon; Kang, Wonkyu; Jang, Seung-gyo; Park, Jungsu; Yoh, Jai-ick;
  PDF(new window)
A pyrotechnic system consisting of donor/acceptor pair separated by a gap relies on shock attenuation characteristics of the gap material and shock sensitivity of the donor and acceptor charges. Despite of its common use, numerical study of such pyrotechnic train configuration is seldom reported because proper modeling of the full process requires precise capturing of the shock wave attenuation in the gap prior to triggering a full detonation of high explosive and accurate description of the high strain rate dynamics of the explosively loaded inert confinements. We apply a Eulerian level-set based multimaterial hydrocode with reactive flow models for pentolite donor and heavily aluminized RDX as acceptor charge. The complex shock interaction, critical gap thickness, acoustic impedance, and go/no-go characteristics of the gap test are quantitatively investigated.
Gap Test;Pyrotechnic Initiator;Shock Attenuation;Critical Gap Thickness;Acoustic Impedance;
 Cited by
파이로테크닉 착화기의 충격파 전달에 의한 폭굉 반응 해석,김보훈;강원규;장승교;여재익;

한국추진공학회지, 2016. vol.20. 5, pp.19-30 crossref(new window)
Hydrodynamic Analysis on Shock-induced Detonation in Pyrotechnic Initiator, Journal of the Korean Society of Propulsion Engineers, 2016, 20, 5, 19  crossref(new windwow)
Kimura, E. and Oyumi, Y., "Sensitivity of Solid Rocket Propellants for Card Gap Test," Propellants, Explosives, Pyrotechnics, Vol. 24, No. 2, pp. 90-94, 1999. crossref(new window)

Kubota, S., Ogata, Y., Wada, Y., Katoh, K., Saburi, T., Yoshida, M. and Nagayama, K., "Observation of Shock Initiation Process in Gap Test," AIP Conference Proceedings, Vol. 845, pp. 1085-1088, 2006. crossref(new window)

Wall, C. and Franson, M., "Validation of a Pressed Pentolite Donor for the Large Scale Gap Test at DSTO," DSTO TN-1172, 2013.

Jang, S.G. and Baek, S.H., "Studies on Through-Bulkhead Initiation Module using VISAR," Journal of the Korean Society of Propulsion Engineers, Vol. 14, No. 4, pp. 16-24, 2010.

Lee, J.S., Park, J.S. and Lee, Y.S., "Study on the Computational Simulation of Large Scale Gap Test," Journal of the Korea institute of Military Science and Technology, Vol. 14, No. 5, pp. 932-940, 2011. crossref(new window)

Lee, J.W. and Yoh, J.I., "Study of Supersonic Flame Acceleration within AN-based High Explosive Containing Various Gap Materials," Journal of the Korean Society of Propulsion Engineers, Vol. 17, No. 4, pp. 32-42, 2013. crossref(new window)

Kim, B., Park, J., Lee, K. and Yoh, J.J., "A reactive flow model for heavily aluminized cyclotrimethylene-trinitramine," Journal of Applied Physics, Vol. 116, 023512, pp. 1-9, 2014.

Piacesi, D.Jr., "Numerical Hydordynamic Calculations of the Flow of the Detonation Products form a Point-initiated Explosive Cylinder," NOL NOLTR-66-150, 1967.

Steinberg, D.J., "Equation of State and Strength Properties of Selected Materials," LLNL UCRL-MA-106439, 1996.

Fried, L.E., Howard, W.M. and Souers, P.C., "Cheetah 2.0 User's Manual," LLNL UCRL-MA-117541 Rev. 5, 1998.

Erkman, J.O., Edwards, D.J., Clairmont, A.R. and Price, D., "Calibration of the NOL Large Scale Gap Test; Hugoniot Data for Polymethyl Methacrylate," NOL NOLTR-73-15, 1973.

Braithwaite, C.H., Pachman, J., Majzlik, J. and Williamson, D.M., "Recalibration of the Large Scale Gap-Test to a Stress Scale," Propellants, Explosives, Pyrotechnics, Vol. 37, No. 5, pp. 614-620, 2012. crossref(new window)