Lin Wenzhou, Hong Tao. Numerical simulation of friction sensitivity of high explosives[J]. Explosion And Shock Waves, 2016, 36(6): 745-751. doi: 10.11883/1001-1455(2016)06-0745-07
Lin Wenzhou, Hong Tao. Numerical simulation of friction sensitivity of high explosives[J]. Explosion And Shock Waves, 2016, 36(6): 745-751. doi: 10.11883/1001-1455(2016)06-0745-07
In order to study the explosive friction safety, a numerical simulation of high explosive friction sensitivity experiment was performed based on a melting friction model. The numerical results agree with the experiment results. The law of friction sensitivity was then analyzed based on the thermal decomposition rate. As the melting temperature is usually lower than the ignition temperature, a one-dimension numerical simulation of sensitivity experiment was conducted using a model that took account of melting, and the ignition times and melting results were obtained. The order of four explosives' ignition time including DATB, NQ, TATB and TNT meet agree with the experiment results, proving the applicability of the model. Furthermore, based on the order of the thermal decomposition rate, the numerical results have proved that, when the friction strength reaches certain degrees, the order of ignition time will change, which means that the sensitivity experiment cannot fully describe the order of the explosive sensitivity.
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