Abstract
To probe into impact sensitivity of energetic crystals, a theoretical approach was developed for modelling a single layer of energetic particles between upper striker and below base. Considering the particle plasticity, frictional heating, melting, fracture, and chemical reaction at particle level, effects of loading parameters and sample characteristics on time-to-ignition and burning rate were compared. Finite element numerical simulations were simultaneously performed to provide supporting evidence for thermo-mechanical interactions among energetic particles. Once hot- spots ignition occurred during impact, the macrokinetics of chemical reactions were formulated by hot-spots density, combustion wave velocity and geometric factor. The resulting reaction may or may not develop into a violent event, may be sustained or be extinguished, which can be revealed from the subsequent burn reaction rate.
| Original language | English |
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| Article number | 052051 |
| Journal | Journal of Physics: Conference Series |
| Volume | 500 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 7 May 2014 |
| Event | 18th Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter, APS-SCCM 2013 in Conjunction with the 24th Biennial International Conference of the International Association for the Advancement of High Pressure Science and Technology, AIRAPT 2013 - Seattle, United States Duration: 7 Jul 2013 → 12 Jul 2013 |