...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion and Flame >Thermobaric effects formed by aluminum foils enveloping cylindrical charges
【24h】

Thermobaric effects formed by aluminum foils enveloping cylindrical charges

机译：铝箔包裹圆柱电荷形成的热压效应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Conceptually new cylindrical charges enveloped by Al foils have been designed and their thermobaric effects, due to simultaneous fragmentation and combustion of the foils, have been experimentally determined. The fragmentation processes of Al foil was supported by numerical simulations. It has been shown that the quasistatic pressures (QSP) for phlegmatized RDX (RDXPh) enveloped with Al-coated plastic foils are higher than that of the pure RDXph, due to combustion of these foil fragments in a thermobaric explosion. The QSP generated by Al-Ni foils enveloping RDXph was found to be much lower than performance of other foils, possibly due to relatively inert nature of Ni. In a small detonation chamber, the charges of RDXph/Al foil (RDXph/Alf) produced even higher experimental maximum peak pressure (Delta p(max)) than the charges that contained Al powder (Al-p). In a closed bunker, the impulse amplitudes of RDXph enveloped by aluminized polyethylene (Al-PE) foils and RDXph enveloped by 100 mu m Alf (Alf100) charges are much lower than those of the other charges. It was found that the charges enveloped by Al foils have even larger Delta p(max) than that of RDXph/Al-p charges, indicating that the Alf could generate better blast performances than the Al-p. The simulations indicate that the observed blast enhancement is dependent not on the thickness, but on the size of surrounding space. The thermobaric fire-ball generated by 40 g RDX/Alf charge could sustain combustion up to 40 ms, reaching a maximum radius of about 2.4 m. (C) 2016 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
机译：从概念上讲，已经设计了被铝箔包围的新型圆柱装药，并且由于箔的同时碎裂和燃烧，已经通过实验确定了它们的热压效应。数值模拟支持了铝箔的破碎过程。已经显示，包裹有铝涂层塑料箔的痰化RDX（RDXPh）的准静态压力（QSP）高于纯RDXph，因为这些箔碎片在热压爆炸中燃烧。发现由包裹RDXph的Al-Ni箔产生的QSP远低于其他箔的性能，这可能是由于Ni相对惰性的缘故。在较小的爆震室内，RDXph / Al箔的电荷（RDXph / Alf）产生的实验最大峰值压力（Delta p（max））甚至比含Al粉（Al-p）的电荷还要高。在一个封闭的沙坑中，被铝化聚乙烯（Al-PE）箔包裹的RDXph的脉冲幅度和被100μmAlf（Alf100）电荷包裹的RDXph的脉冲幅度远低于其他电荷。发现铝箔包封的电荷比RDXph / Al-p电荷具有更大的Delta p（max），这表明Alf可以比Al-p产生更好的爆炸性能。模拟表明，观察到的爆炸增强不取决于厚度，而是取决于周围空间的大小。由40 g RDX / Alf装药产生的热压火球可维持燃烧长达40 ms，最大半径约为2.4 m。 （C）2016年燃烧研究所。由Elsevier Inc.出版。保留所有权利。

著录项

  • 来源
    《Combustion and Flame》 |2016年第4期|148-157|共10页
  • 作者

    Yan Qi-Long; Trzcinski Waldemar A.; Cudzilo Stanislaw; Paszula Jozef; Eugen Traria; Liviu Matache; Traian Rotariu; Gozin Michael;

  • 作者单位

    Tel Aviv Univ, Sch Chem, Fac Exact Sci, IL-69978 Tel Aviv, Israel;

    Mil Univ Technol, Inst Chem, Kaliskiego 2, PL-00908 Warsaw, Poland;

    Mil Univ Technol, Inst Chem, Kaliskiego 2, PL-00908 Warsaw, Poland;

    Mil Univ Technol, Inst Chem, Kaliskiego 2, PL-00908 Warsaw, Poland;

    Mil Tech Acad, Bucharest 050141, Romania;

    Sci Res Ctr CBRN Def & Ecol, 225 Sos Oltenitei, Bucharest 041309, Romania;

    Mil Tech Acad, Bucharest 050141, Romania;

    Tel Aviv Univ, Sch Chem, Fac Exact Sci, IL-69978 Tel Aviv, Israel;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Detonation; Combustion; Explosives; Thermobaric; Al foil;

    机译：爆炸;燃烧;炸药;热释火;铝箔;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号