Structure optimization of linear shaped charge based on different explosives

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-22 DOI:10.1002/prep.202300321

Xin Mao, Tianbao Ma, Jing Liu

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Abstract

In order to improve the damage ability of traditional shaped charge, a special linear shaped charge is designed. The driving characteristics of B explosive, HMX based explosive (JO‐8) and CL‐20 based explosive on linear explosively formed projectile (LEFP) are compared. The forming effect of LEFP is analyzed, the structural parameters of LEFP are designed, and the structure of shaped charge is optimized by combining genetic algorithm (NSGA‐II) and sequence quadratic programming (NLPQL). The Pulsed X‐ray experiment of scale LEFP is carried out. The results show that: (1) under the same structure, the LEFP formed by the shaped charge using CL‐20 explosive has better performance; (2) the LEFP formed by optimized B explosive is superior to that formed by unoptimized JO‐8 explosive, while LEFP formed by optimized JO‐8 explosive is superior to that formed by CL‐20 explosive, which indicates that explosives with lower energy density can also produce better LEFP after optimization; (3) The experimental results are consistent with the numerical results, which verifies the reliability of the numerical simulation and the effectiveness of the optimization method.

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基于不同炸药的线性定型装药结构优化

为了提高传统定型装药的毁伤能力，设计了一种特殊的线性定型装药。比较了 B 型炸药、HMX 型炸药（JO-8）和 CL-20 型炸药对线性爆炸成形弹（LEFP）的驱动特性。分析了线性爆炸成形弹的成形效果，设计了线性爆炸成形弹的结构参数，并结合遗传算法（NSGA-II）和序列二次编程（NLPQL）优化了成形装药的结构。并对鳞片状 LEFP 进行了脉冲 X 射线实验。结果表明(1）在相同结构下，使用 CL-20 炸药的定型装药形成的 LEFP 性能更好；（2）优化 B 炸药形成的 LEFP 优于未优化 JO-8 炸药形成的 LEFP，而优化 JO-8 炸药形成的 LEFP 优于 CL-20 炸药形成的 LEFP，说明能量密度较低的炸药经过优化后也能产生较好的 LEFP；（3）实验结果与数值结果一致，验证了数值模拟的可靠性和优化方法的有效性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.