| 孔隙对TATB基高聚物粘结炸药有效弹性模量的影响 |
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| 引用本文： | 韦兴文,李明,李敬明,涂小珍,周美林.孔隙对TATB基高聚物粘结炸药有效弹性模量的影响[J].含能材料,2014,22(4):493-497. |
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| 作者姓名： | 韦兴文 李明 李敬明 涂小珍 周美林 |
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| 作者单位： | 中国工程物理研究院化工材料研究所, 四川 绵阳 621900;中国工程物理研究院化工材料研究所, 四川 绵阳 621900;中国工程物理研究院化工材料研究所, 四川 绵阳 621900;中国工程物理研究院化工材料研究所, 四川 绵阳 621900;中国工程物理研究院化工材料研究所, 四川 绵阳 621900 |
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| 基金项目： | 装备预先研究项目(51311020107) |
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| 摘 要： | 采用代表体积单元(RVE)建模方法,建立了与实际TATB基高聚物粘结炸药(PBX)微观结构近似的有限元计算模型,该模型可以生成炸药颗粒和孔隙随机分布、填充率和孔隙率任意调整的二维RVE。并采用该模型研究了孔隙大小、空间分布和孔隙率对TATB基PBX有效弹性模量的影响。结果表明:粘结剂内孔隙使得TATB基PBX在外载荷作用下易于变形,TATB基PBX的有效弹性模量显著减小,随着孔隙率增加,有效弹性模量呈指数减小;孔隙的空间分布对TATB基PBX有效弹性模量影响较大,当孔隙分布在粘结剂与炸药晶体之间界面时,容易造成粘结界面破裂而导致有效弹性模量显著下降,下降幅度超过50%;但孔隙的大小对TATB基PBX有效弹性模量影响不大。
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| 关 键 词： | 材料物理 高聚物粘结炸药(PBX) 有效弹性模量 孔隙 代表体积元(RVE) |
| 收稿时间： | 2013/8/16 0:00:00 |
| 修稿时间： | 2013/11/3 0:00:00 |
Influence of Pore Properties on Effective Elastic Modulus of TATB Based Polymer Bonded Explosive |
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| WEI Xing-wen,LI Ming,LI Jing-ming,TU Xiao-zhen and ZHOU Mei-lin.Influence of Pore Properties on Effective Elastic Modulus of TATB Based Polymer Bonded Explosive[J].Chinese Journal of Energetic Materials,2014,22(4):493-497. |
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| Authors: | WEI Xing-wen LI Ming LI Jing-ming TU Xiao-zhen and ZHOU Mei-lin |
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| Affiliation: | Institute of Chemical Materials, CAEP, Mianyang 621900, China;Institute of Chemical Materials, CAEP, Mianyang 621900, China;Institute of Chemical Materials, CAEP, Mianyang 621900, China;Institute of Chemical Materials, CAEP, Mianyang 621900, China;Institute of Chemical Materials, CAEP, Mianyang 621900, China |
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| Abstract: | Finite Element Modeling(FEM)model of TATB based polymer bonded explosive(PBX) with microstructure similar to the true one were obtained by a representative volume element (RVE) method. Two-dimension RVE, considering the fraction and distribution of the fillers and pores was established. Effects of pore structure parameters (pore size, pore space distribution and porosity) on the effective elastic modulus of TATB based PBX were analyzed. Result shows that pores in binders lead the TATB based PBX to deform easily. With the increase of porosity, the effective elastic modulus decreases with exponential distribution. And at the same porosity, pore space distribution has great effect on the effective elastic modulus of TATB based PBX, which can drop by more than 50 percent when the pores distribute in the interface between binder and explosive crystals. The impact of pore size is small to the effective elastic modulus of TATB based PBX. |
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