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首页> 《中国测试》期刊 >本期导读>脉冲X光摄影法测量柱壳内爆膨胀速度的研究

脉冲X光摄影法测量柱壳内爆膨胀速度的研究

278    2020-01-19

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作者:沈飞, 王辉, 张广华, 李彪彪

作者单位:西安近代化学研究所, 陕西 西安 710065


关键词:爆炸力学;柱壳;膨胀速度;脉冲X光;圆筒试验


摘要:

为提高脉冲X光摄影法测量柱壳内爆膨胀速度的准确度,建立柱壳内爆条件下的膨胀速度分析计算模型,可根据壳体膨胀形状曲线准确计算出真实膨胀速度变化曲线,并采用TNT标准圆筒试验对比脉冲X光测量法与狭缝扫描测量法的速度曲线,最后选取典型复杂工况进行尝试性应用。实验结果表明:在无稀疏波影响的区域,两种测量方法获得的铜管膨胀速度曲线吻合较好,表明该模型具有较高的精度;且对于水介质约束条件下的铜管内爆膨胀实验,也能够准确量化出壳体的速度变化过程,表明该方法能够应用于复杂工况下柱壳内爆膨胀速度的准确测量。


Research on implosion expansion velocity of cylindrical shell measured by pulse X-ray photography
SHEN Fei, WANG Hui, ZHANG Guanghua, LI Biaobiao
Xi'an Modern Chemistry Research Institute, Xi'an 710065, China
Abstract: In order to improve the accuracy of pulse X-ray photography in measuring the implosion expansion velocity of cylinder shell, an analysis and calculation model of expansion velocity under the condition of cylinder shell implosion was established. The real expansion velocity curve can be calculated accurately according to the expansion shape curve of the shell. TNT standard cylinder test was used to compare the velocity curves of pulse X-ray method and slit scanning method. And typical complex working conditions were selected and applied tentatively. The experimental results show that the expansion velocity curves obtained by the two measurement methods are in good agreement with each other in the area without the influence of sparse wave, indicating that the model has high accuracy. In addition, for the copper tube implosion expansion experiment under the constraint of water medium, the velocity change process of the shell can also be accurately quantified, indicating that this method can be applied to the accurate measurement of the implosion expansion velocity of the shell under complex working conditions.
Keywords: explosive mechanics;cylindrical shell;expansion velocity;pulse X-ray;cylinder test
2020, 46(1):29-33  收稿日期: 2019-07-26;收到修改稿日期: 2019-08-15
基金项目: 国防技术基础研究项目(JSJL2016208A011)
作者简介: 沈飞(1983-),男,江苏如皋市人,副研究员,硕士,主要从事炸药爆轰性能实验及理论研究
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