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Combustion, Explosion and Shock Waves

2016 year, number 4

Response of an HMX Based Explosive to Dynamic Loading by the Hopkinson Split Bar Technique

A. V. Yurlov1,2, V. A. Pushkov1,2, T. G. Naidanova1, A. N. Tsibikov1, A. V. Bakanova1
1RFNC, Institute of Experimental Physics, Sarov, 607190 Russia
2Sarov Physics and Technology Institute, Sarov, 607188 Russia
Keywords: ВВ, низкоскоростное воздействие, динамическое сжатие, разрушение, адиабатический сдвиг, взрывные превращения, explosive, low-velocity impact, dynamic compression, fracture, adiabatic shear, explosive transformation

Abstract

The dynamic compression and localized adiabatic shear in samples of an HMX based explosive using the Hopkinson split bar technique was studied. Experiments to study dynamic compression were performed at strain rates (0.3-2.0) × 103 с-1. Fracture of the explosive samples was found to occur at stresses of 60-80 MPa. The behavior of HMX based samples was also studied in experiments on localized shear at different strain rates (200-2500 s-1). The issues of the initiation of explosive transformations under the dynamic loads are discussed.