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

• Research Papers • Previous Articles     Next Articles

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

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

  1. 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
  • Contact: MENG Jun-jiong

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

CLC Number: