- 1. 中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室,四川 绵阳 621999
Deformation with damage and temperature-rise of two types of plastic-bonded explosives under uniaxial compression
- 1. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China
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Abstract: In the uniaxial compression, deformation with damage and temperature-rise of two types of plastic-bonded explosives were recorded by means of a high-speed camera and a high-speed infrared radio camera. The results show that the damage evolution and the temperature-rise of the two PBXs are obviously different. As for the PBX with a low content of the binder, the brittleness of the material is characteristically obvious, the strain softening of the stress-strain curve is accompanied with a damage evolution, and the crack formation is due to the failure of the sample, where there existed a local temperature band. As for the PBX with a high content of the binder, the toughness of the material is observed, the strain softening in the stress-strain curve is absent, and the damage is distributed evenly, with a network temperature-rise in the direction of shear.