Research on the Friction Coefficient between Explosive and Different Materials
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摘要: 采用分离式霍普金森压剪杆装置，对GO-924炸药与铝合金、橡胶、GO-924炸药之间在不同冲击加载条件下的摩擦系数进行了研究，得到了炸药与不同材料界面间的摩擦系数随时间变化的曲线。结果表明：炸药与铝合金之间的动摩擦系数维持在0.166~0.176范围内，且不随冲击加载速率的变化而变化；炸药与橡胶之间的动摩擦系数在运动过程中不断增大，其数值与冲击加载速率相关；炸药与炸药之间的动摩擦系数在运动过程中先增大，达到峰值后迅速下降，分析认为这种现象与炸药内部产生损伤有关。
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关键词:
- 炸药安全性 /
- 分离式霍普金森压剪杆 /
- 摩擦系数
Abstract: Using split Hopkinson compression-shear bar, the friction coefficients between GO-924 explosive and three materials including aluminum alloy, rubber, and GO-924 explosive itself were investigated under different shock loading conditions.The results show that the rules of the 3 friction coefficient curves are different.For aluminum alloy, the friction coefficient varies between 0.166 and 0.176 and is independent of impact speed; for rubber, the friction coefficient increases steadily and is sensitive to impact speed; the friction coefficient between explosives increases at first and then decreases, which is likely to relate to explosive damage. -
图 3 炸药与铝合金之间摩擦的实验结果
Figure 3. Experimental results of friction between explosive and aluminum alloy
图 5 炸药与橡胶之间摩擦的实验结果
Figure 5. Experimental results of friction between explosive and rubber
表 1 实验参数
Table 1. Experimental parameters
Strain gauge Quartz gauge K R/(Ω) β/(kΩ) U0/(mV) d11/(pC/N) A/(mm2) 110 257.5 15 880 2.43 314.159 
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