| 炸药熔铸过程缩孔和缩松的形成与预测 |
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| 引用本文： | 李敬明,田勇,张伟斌,黄勇.炸药熔铸过程缩孔和缩松的形成与预测[J].火炸药学报,2011,34(2):17-20,55. |
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| 作者姓名： | 李敬明 田勇 张伟斌 黄勇 |
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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 |
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| 基金项目： | 中国工程物理研究院基金(2005Z0504)资助 |
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| 摘 要： | 采用工业CT对熔铸成型TNT及RHT(熔黑梯)药柱内部的缩孔和缩松情况进行检测,分析了炸药熔铸成型过程中内部缩孔缩松产生的模式和机理.采用有限元法对炸药熔铸成型过程中缩孔缩松的形成过程进行了数值模拟.结果表明,熔铸炸药内部缩孔缩松的形成主要是由于其凝固过程中结晶收缩、固体收缩及气体析出形成的,采用临界固相率和补缩距离相...
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| 关 键 词： | 材料科学 炸药 熔铸 缩孔 缩松 数值模拟 |
Formation and Prediction of Shrinkage Hole and Shrinkage Porosity in Explosive During Casting Process |
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| LI Jing-ming,TIAN Yong,ZHANG Wei-bin,HUANG Yong.Formation and Prediction of Shrinkage Hole and Shrinkage Porosity in Explosive During Casting Process[J].Chinese Journal of Explosives & Propellants,2011,34(2):17-20,55. |
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| Authors: | LI Jing-ming TIAN Yong ZHANG Wei-bin HUANG Yong |
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| Affiliation: | LI Jing-ming,TIAN Yong,ZHANG Wei-bin,HUANG Yong(Institute of Chemical Materials,CAEP,Mianyang Sichuan 621900,China) |
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| Abstract: | The shrinkage hole and shrinkage porosity and shrinkage distribution of casted TNT and RHT explosive charges were tested by X-ray computed tomography method.The shrinkage hole and shrinkage porosity formation model and mechanism were analyzed.The shrinkage hole and shrinkage porosity formation process at different conditions were simulated by using finite element method.The results show that the shrinkage hole and shrinkage porosity is mainly produced by crystal phase change,solid shrinkage and gas release ... |
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| Keywords: | material science explosive casting shrinkage hole shrinkage porosity numerical simulation |
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