A theoretical study of wave dispersion and thermal conduction for HMX/additive interfaces

摘要: The wave dispersion rule for non-uniform material is useful ultrasonic inspection and engine life prediction, also key in achieving an understanding of the energy dissipation thermal conduction properties solid material. On basis linear response theory molecular dynamics, we derive a set formulas calculating rate interface systems, study four kinds interfaces inside plastic bonded explosives: HMX/{HMX, TATB, F2312, F2313}. (HMX: octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine; TATB: 1,3,5-triamino-2,4,6-trinitrobenzene; F2313: fluoropolymers). obtained over wide frequency range from kHz to PHz. We find that at low frequency, proportional square high couples with vibration modes interface. By using results, conductivities HMX/additive are derived, physical model built describing total conductivity mixture explosives, including HMX multi-particle systems {TATB, F2313}-coated HMX.