基于Hopkinson压杆实验技术研究火工品及含能材料的抗高过载能力  

Study on Overloading-resistibility of Initiator and Energetic Materials Based on the Technique of Hopkinson Pressure Bar

作　　者：邓琼[1] 叶婷[1] 苗应刚[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《火炸药学报》2009年第6期66-70,共5页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金项目(10872174);陕西省自然科学基金(SJ08A07)

摘　　要：利用Hopkinson压杆实验技术和静态液压伺服系统INSTRON试验机，采用波形整形技术，得到HNS在应变率为10^-4～10^3S^-1条件下的动态力学性能数据，确定了其失效模式。通过改变子弹形状，得到不同脉冲升时条件下火工品失效所对应的加速度幅值，从而确定了火工品的抗高过载能力。结果表明，Hopkinson压杆实验技术是实现实验室模拟加载环境的一种非常有效的实验方法。Hopkinson pressure bar technique and static hydraulic servo system INSTRON tester were used to obtain the dynamic mechanical properties of HNS at the strain rate of 10^- 4-10 ^-3s^-1 and to ascertain the failure model of HNS materials using the waveform regulation technique. The acceleration amplitude corresponding to critical failure of initiator at different rising time of incidence waveform was achieved by improving strike bar shape and the overloading-resistibility of initiator under overloading condition was determined. The results show that Hopkinson pressure bar technique is an efficient apparatus to simulate dynamic overloading environment.

关 键 词：固体力学 Hopkinson压杆实验技术 火工品 含能材料 抗高过载能力 

分 类 号：TM33[电气工程—电机] O347.4[理学—固体力学]