摘要
建立了基于KIM模型的一个化学反应速率方程模型,用于分析PBX起爆和爆轰行为的损伤作用。运用遗传算法确定了反应速率方程的相关参数,通过与Forest-Fire反应速率模型数值模拟结果对比,验证了所建模型的合理性。将所建反应速率方程模型嵌入有限元程序对PBX炸药二维冲击起爆过程进行数值模拟,数值模拟结果与试验结果吻合较好,可以描述分析受冲击加载造成孔隙率、颗粒尺寸等变化的损伤炸药的冲击起爆过程。
A reaction rate function model built up based on KIM model is applied to analysis damage influence on initiation and detonation behavior of PBX. Reaction rate function model parameter is obtained by genetic algorithms. And validation of the model is verified by comparing simulation results with Forest-Fire model. Two dimension numerical simulation of PBX is executed to explosive＇s initiation and detonation process by embedded the new reaction rate function model into finite element analysis program. Numerical simulation results are in good agreement with experiment results of damaged explosives shock initiation and detonation behaviour. The new reaction model can be used to analyze detonation mechanism of damaged explosive while porosity and grains size is changed by impact load.
出处
《火炸药学报》
EI
CAS
CSCD
2008年第5期15-18,共4页
Chinese Journal of Explosives & Propellants
基金
国防科工委基础研究基金资助(20040213)
