Numerical simulation of multi‐layer flyer impact initiation of a certain PBX explosive

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-22 DOI:10.1002/prep.202300252

Jingyao Yuan, Yingliang Duan, Yong Han

引用次数: 0

Abstract

This paper addresses the problem of multi‐layer flyer impact‐induced initiation of a high‐energy explosive PBX‐1(based on 95 % TATB). The CREST reaction combustion model based on the time‐step difference method is embedded in LS‐DYNA, and the pressure history of PBX‐1 in multiple impact initiation is numerically simulated. The strengths and weaknesses of the two models are analyzed by comparing the simulation results of the pressure‐based IG model and the entropy‐based CREST model in multiple impact initiation. The results show that the CREST model is significantly better than the IG model in the problem of multiple impact initiation of PBX‐1, and it matches the experimental results better.

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某种 PBX 炸药的多层传单冲击起爆数值模拟

本文探讨了高能炸药 PBX-1（基于 95 % TATB）的多层飞鸟冲击起爆问题。在 LS-DYNA 中嵌入了基于时差法的 CREST 反应燃烧模型，并对 PBX-1 在多次冲击起爆中的压力历史进行了数值模拟。通过比较基于压力的 IG 模型和基于熵的 CREST 模型在多次冲击起爆中的模拟结果，分析了两种模型的优缺点。结果表明，在 PBX-1 的多次冲击起爆问题上，CREST 模型明显优于 IG 模型，而且与实验结果更匹配。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.

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