计算物理 ›› 2014, Vol. 31 ›› Issue (5): 523-530.

• 论文 • 上一篇    下一篇

冲击作用下非均质炸药热点形成的离散元方法

刘超, 石艺娜, 梁仙红   

  1. 北京应用物理与计算数学研究所, 北京 100088
  • 收稿日期:2013-10-28 修回日期:2014-03-20 出版日期:2014-09-25 发布日期:2014-09-25
  • 作者简介:刘超(1976-),女,硕士,副研究员,主要从事计算爆炸力学研究,E-mail:liu_chao@iapcm.ac.cn
  • 基金资助:
    国家自然科学基金(11202034);中物院科学技术发展基金(2011B0101028,2013B0101013);中物院科学技术重点基金(2012A0101004)资助项目

DEM Study on Hot Spots Formation of Heterogeneous Explosives Under Shock Loading

LIU Chao, SHI Yina, LIANG Xianhong   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2013-10-28 Revised:2014-03-20 Online:2014-09-25 Published:2014-09-25

摘要: 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.

关键词: 离散元方法, 热点, 冲击加载, 炸药

Abstract: 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.

Key words: discrete element method, hot spot, shock loading, explosive

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