计算物理
計算物理
계산물리
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS
2014年
5期
523-530
,共8页
刘超%石艺娜%梁仙红
劉超%石藝娜%樑仙紅
류초%석예나%량선홍
离散元方法%热点%冲击加载%炸药
離散元方法%熱點%遲擊加載%炸藥
리산원방법%열점%충격가재%작약
discrete element method%hot spot%shock loading%explosive
用离散元方法模拟以HMX为基的塑料粘结炸药与HMX颗粒炸药在冲击载荷作用下的细观响应过程。结果表明对于HMX颗粒炸药,炸药颗粒界面处的温度及压力远高于颗粒内部;对于HMX为基的塑料粘结炸药,粘结剂处的温度及压力亦高于颗粒内部;两种冲击响应过程的对比分析表明,粘结剂有效地降低了炸药颗粒边界处的温度及压力。
用離散元方法模擬以HMX為基的塑料粘結炸藥與HMX顆粒炸藥在遲擊載荷作用下的細觀響應過程。結果錶明對于HMX顆粒炸藥,炸藥顆粒界麵處的溫度及壓力遠高于顆粒內部;對于HMX為基的塑料粘結炸藥,粘結劑處的溫度及壓力亦高于顆粒內部;兩種遲擊響應過程的對比分析錶明,粘結劑有效地降低瞭炸藥顆粒邊界處的溫度及壓力。
용리산원방법모의이HMX위기적소료점결작약여HMX과립작약재충격재하작용하적세관향응과정。결과표명대우HMX과립작약,작약과립계면처적온도급압력원고우과립내부;대우HMX위기적소료점결작약,점결제처적온도급압력역고우과립내부;량충충격향응과정적대비분석표명,점결제유효지강저료작약과립변계처적온도급압력。
Mesoscale responses of plastic boned explosives( PBX) and grannular HMX under shock loading were investigated with discrete element method( DEM) . It shows that for shocked grannular HMX temperature and pressure in grain boundary are much higher than those of inner HMX crystals. In the case of shocked PBX high temperature and pressure regions are mostly located in binder and near parts. Comparisons show that temperature and pressure in grain boundary are effectively reduced by binder.