Mechanical Response of Fluorine Rubble F2311 under Quasi-Isentropic Compression
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摘要: 利用磁驱动准等熵压缩实验技术，对常用固体炸药粘结剂氟橡胶F2311在准等熵压缩加载下的动力学响应特性进行了实验研究。利用激光干涉测速技术，获得了加载峰值压力7 GPa内3种不同厚度F2311样品/PMMA(有机玻璃)窗口界面速度响应曲线。利用Lagrange方法和反积分方法对速度历史进行了处理，获得了F2311在该压力范围内的力学特征。研究结果表明:在0~3.5 GPa之间，氟橡胶F2311的动力学行为可用一阶形式的us-up关系us=1.89+3.84up描述；在3.5~7.0 GPa之间，则表现出明显的非线性行为。Abstract: The magnetically driven quasi-isentropic compression loading technique (ICE) is used to investigate the mechanical behavior of fluorine rubble F2311 which is often used in energetic composites.By means of laser displacement interferometer, particle velocities of the interface between F2311 and windows are gained under pressure up to 7.0 GPa.The mechanical characteristics of F2311 are analyzed by Lagrange and backward integration method.The results indicate that the response of the rubble F2311 could be described by the single-order us-up relation us=1.89+3.84up under 0-3.5 GPa, but under 3.5-7.0 GPa, this material displays a nonlinear response.
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Key words:
- fluorine rubble /
- quasi-isentropic compression /
- mechanical response /
- equation of state
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图 1 磁驱动准等熵压缩实验原理图
Figure 1. Principle diagram of magnetically driven quasi-isentropic compression
图 3 放电电流和加载压力历史曲线
Figure 3. Experimentally discharging current waveform and loading pressure curves
图 5 不同厚度F2311/PMMA速度响应曲线
Figure 5. The particle velocities of interface between F2311and PMMA windows with different thicknesses
图 8 Lagrange声速-粒子速度关系曲线
Figure 8. Lagrange sound speed-particle velocity relation curve
表 1 实验参数
Table 1. Experimental parameters
No. Sample size
/(mm×mm)Window
materialPanel thickness
/(mm)Charge voltage
/(kV)1-1 LiF 0.8 56 1-2 Ø6×1.00 PMMA 0.8 56 2-1 Ø6×0.77 PMMA 0.8 56 2-2 Ø6×0.63 PMMA 0.8 56 
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