摘要
采用数值模拟方法研究了熔铸炸药常压和加压条件下凝固过程中的温度场,得到了温度的冷却曲线、固液界面的变化过程以及缩孔缩松缺陷可能出现的位置。常压条件下关注位置的计算温度值与实测温度值误差在10%以内;加压在5~20个大气压之间时,随着压力的增大,炸药件的缩孔缩松缺陷显著减少。模拟结果表明加压凝固工艺能有效地消除熔铸炸药的缩孔缩松缺陷。
The-temperature-field-during-solidification-process-of-melt-cast-explosive-under-adscititious-pressure-and-atmospheric-pressure-is-studied-by-adopting-numerical-simulation-method.-The-cooling-curves-of-temperature,-the-change-process-of-solid-liquid-interface,-and-the-positions-where-shrinkage-defects-may-appear-are-obtained.-Under-atmospheric-conditions,-the-error-of-temperature-value-for-the-positions-of-interest-between-computation-and-measurement-is-below10%;-under-adscititious-pressure-between-5-atm-and-20-atm,-the-melt-cast-explosive-shrinkage-defects-reduce-significantly-as-the-pressure-increases.-The-simulation-results-show-that-the-pressurized-solidification-process-can-effectively-eliminate-melt-cast-explosive-shrinkage-defects.
出处
《太赫兹科学与电子信息学报》
2014年第4期617-621,共5页
Journal of Terahertz Science and Electronic Information Technology
基金
中国工程物理研究院科学技术发展基金资助项目(2009B0203015)
关键词
熔铸炸药
凝固
数值模拟
缩松
melt-cast explosive
solidification
numerical simulation
shrinkage porosity
