孔隙率对PBX热导率影响的数值模拟  

Numerical Simulation of the Porosity Influence on Thermal Conductivity of Polymer Bonded Explosive

作　　者：韦兴文[1] 李明[1] 周筱雨[1] 黄忠[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《含能材料》2013年第5期681-683,共3页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金(10832003);化工材料研究所创新基金(626010947)

摘　　要：采用代表体积元建模方法,建立了与实际高聚物粘结炸药(Polymer Bonded Explosive,PBX)细观结构高度相近、能反映炸药颗粒和微孔隙随机分布、可以任意调整填充率和孔隙率的有限元计算模型,并计算分析了孔隙率对PBX热导率的影响。结果表明,随着孔隙率增大,PBX的有效热导率呈指数减小。A representative volume element （RVE） model was developed to investigate the thermal conductivity of three-phase pol- ymer bonded explosive （PBX） , and the fraction and distribution of the fillers and pores were taken into consideration. The influ- ence of porosity on the thermal conduction of PBX was analyzed. Results show that the thermal conduction of PBX decreases expo- nentially with the increase of porosity.

关 键 词：材料物理 高聚物粘结炸药 热导率 孔隙率 数值模拟 

分 类 号：TQ560.1[化学工程—炸药化工]