DNAN 基熔铸炸药成型过程数值仿真

doi:10.3969/j.issn.1000-1093.2013.07.002

兵工学报 ›› 2013, Vol. 34 ›› Issue (7): 810-814.doi: 10.3969/j.issn.1000-1093.2013.07.002

DNAN 基熔铸炸药成型过程数值仿真

蒙君煚, 张向荣, 周霖

北京理工大学爆炸科学与技术国家重点实验室,北京100081

收稿日期:2013-04-16 修回日期:2013-04-16 上线日期:2014-08-19
作者简介:蒙君煚(1987—),男,博士研究生

Simulation of Solidification Process for DNAN-based Melt-cast Explosives

MENG Jun-jiong, ZHANG Xiang-rong, ZHOU Lin

State key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received:2013-04-16 Revised:2013-04-16 Online:2014-08-19

摘要/Abstract

摘要： 为模拟DNAN 基熔铸炸药成型过程,采用结构网格计算流场和温度场、非结构网格计算应力场的方法,得到DNAN 基熔铸炸药冷却凝固时清晰的固液界面以及合理的缩孔缩松及热应力分布。通过对比研究,在一定模具和装药尺寸条件下,提出减少DNAN 基熔铸炸药装药缩孔缩松、降低热应力极值以及缩短凝固时间的优化方案,方案为模具上表面保温1 h,模具下表面30 益恒温水浴。

关键词: 兵器科学与技术, 流变学, 熔铸炸药, 结构与非结构网格, 装药缺陷

Abstract: In order to simulate the pouring and solidification process of DNAN based melt-cast explosives, flow and thermal fields were calculated using structured mesh, and stress field was calculated usingunstructured mesh. This numerical scheme can obtain an accurate interface between solid and liquid,reasonable shrinkage and stress data. By comparison research, on the condition of certain mould andcharge size, the optimized scheme for DNAN-based melt-cast explosives is that thermal insulation on upper mould surface for an hour with 30℃ water on lower mould surface, in order to decrease shrinkage,thermal stress value and solidification time by overall consideration.

Key words: ordnance science and technology, rheology, melt-cast explosive, structured and unstructured mesh, charge defect

中图分类号:

TJ55
TG244

蒙君煚, 张向荣, 周霖. DNAN 基熔铸炸药成型过程数值仿真[J]. 兵工学报, 2013, 34(7): 810-814.

MENG Jun-jiong, ZHANG Xiang-rong, ZHOU Lin. Simulation of Solidification Process for DNAN-based Melt-cast Explosives[J]. Acta Armamentarii, 2013, 34(7): 810-814.

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DNAN 基熔铸炸药成型过程数值仿真

Simulation of Solidification Process for DNAN-based Melt-cast Explosives

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