PBX药柱温升过程中的性能变化研究
Hanneng Cailiao/Chinese Journal of Energetic Materials(2008)
Abstract
为全面了解温升过程中PBX药柱温度、应力和尺寸变化情况,利用瞬态-应力耦合有限元法对药柱温升过程进行模拟.结果显示:药柱温升过程中,热量逐渐向内部传递,初始升温阶段应力增大很快,最大达到2.37 MPa,随着内外温差的减小而逐渐减小;药柱尺寸增大,密度减小约0.008 g·cm-3.通过模拟可以初步确定药柱温升过程内部应力变化规律,预估尺寸和密度变化量,优化设计了一种炸药加热工艺,即将加热分四段进行,尽量降低升温速率,保证至少1800 s的恒温时间.
MoreTranslated text
Key words
Heat treatment,Numerical simulation,Physical chemistry,Polymer-bonded explosive (PBX)
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined