Front Curvature Rate Stick Experiment of JB-9014 over a Wide Temperature Range

GUO Liu-wei1 LIU Yu-si1 HUANG Yu1 ZHANG Xu1 ZHENG Xian-xu1

(1.National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, China 621999)

【Abstract】To study the influence of wide temperature range on the detonation wave front curvature rate for insensitive explosives, pseudo-steady-state detonation wave velocities and wave front shapes were obtained for JB-9014 with three different grain diameters (10, 15, 30 mm) at the temperatures −55 °C, 11 °C, and 70 °C by using high-speed streak camera technique and electric pins velocimetry. Results show that at the same temperature, the pseudo-steady-state detonation wave velocity is concave down for small-diameter grain but it is concave up for large-diameter grain. At the same grain diameter, the pseudo-steady-state detonation wave velocity of JB-9014 decreases linearly as the ambient temperature increases and the decrease of slope is related to the diameter of the grain. When the variation of detonation wave velocity of JB-9014 with grain diameter and ambient temperature is fitted by polynomial, the fitting results are in good agreement with the experimental data. For JB-9014 with three kinds of grain diameters, the pseudo-steady-state detonation wave front shape becomes flatter with the increase in the ambient temperature. When the experimental results of three kinds of grain diameters are fitted by genetic arithmetic method, the Dn(κ) parameters of JB-9014 over a wide temperature range are obtained. When the local curvature is less than 0.16, the Dn(κ) relation decreases with the increase in temperature, while the result is the opposite when the local curvature is greater than 0.26. When the detonation shock dynamics (DSD) method is used to calculate the non-ideal propagation process of detonation wave of grains with three kinds of diameters, the calculated results are in good agreement with the experimental values.

【Keywords】 insensitive explosive; curvature effect; pseudo-steady-state detonation wave front shape; pseudo-steady-state detonation wave velocity; detonation shock dynamics (DSD) method;


【Funds】 Science Challenge Project (TZ2018001)

Download this article

(Translated by LI ZP)


    [1] Bdzil J B, Stewart D S. The dynamics of detonation in explosive system DSD [J]. Annual Review of Fluid Mechanics, 2007, 39: 263–92.

    [2] Bdzil J B, Stewart D S. Modeling two-dimensional detonation with detonation shock dynamics [J]. Physics of Fluids A, 1989, 1(7): 1261–1267.

    [3] Campbell A W. Diameter effect and failure diameter of a TATB-based explosive [J]. Propellants, Explosives, Pyrotechnics, 1984, 9: 183–187.

    [4] Hill L G, Bdzil J B, Aslam T D. Front curvature rate stick measurements and detonation shock dynamics calibration for PBX9502 over a wide temperature range [C]//Proceedings of 11th International Detonation Symposium, Snowmass, CO, 1998: 1029–1037.

    [5] Hill L G, Aslam T D. PBX 9502 front curvature rate stick data: repeatability and the effects of temperature and material variation [C]//Proceedings of 13th International Detonation Symposium, Norfolk, VA, 2006, 175(3): 311–341.

    [6] Hill L G, Aslam T D. Detonation shock dynamics calibration for PBX 9502 with temperature, density, and material lot variations [C]//Proceedings of 14th International Detonation Symposium, Coeurd′Alene, ID, 2010, 52(3): 779–788.

    [7] TAN Duo-wang, FANG Qing, ZHANG Guang-sheng, et al. Experimental study on the diameter effect for JB-9014 rate sticks [J]. Explosion and Shock Waves, 2003, 23(4): 300–304 (in Chinese).

    [8] TAN Duo-wang, FANG Qing. Curvature effect for insensitive explosive at normal atmospheric temperature [J]. Chinese Journal of Energetic Materials (Hanneng Cailiao), 2005, 13(1): 13–16 (in Chinese).

    [9] TAN Duo-wang, FANG Qing, ZhANG Guang-sheng, et al. Detonation shock dynamics calibration of JB-9014 explosive at ambient temperature [J]. Chinese Journal of High Pressure Physics, 2009, 23(3): 161–166 (in Chinese).

    [10] ZOU Li-yong, TAN Duo-wang, WEN Shang-gang, et al. Experimental study on the nonideal detonation for JB-9014 rate sticks at −30 °C [J]. Explosion and Shock Waves, 2007, 27(4): 325–330 (in Chinese).

    [11] GUO Liu-wei, LIU Yu-si, WANG Bin, et al. Front curvature rate stick experiment of TATB based insensitive high explosives at high temperature [J]. Chinese Journal of Energetic Materials (Hanneng Cailiao), 2017, 25(2): 138–143 (in Chinese).

    [12] Bdzil J B, Aslam T D, Henniger R J. Detonation front models: theories and methods [R]. LA-14274, 2006.

    [13] ZHOU Ming, SUN Shu-dong. Genetic algorithms: theory and applications [M]. Beijing: National Defense Industry Press, 1999: 18–31 (in Chinese).

This Article


CN: 51-1489/TK

Vol 27, No. 12, Pages 1062-1068

December 2019


Article Outline


  • 1 Introduction
  • 2 Experiments
  • 3 Results and analysis
  • 4 Conclusions
  • References