CHINESE JOURNAL OF ENERGETIC MATERIALS
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短切碳纤维爆炸分散特征及云团参数变化规律实验研究
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陆军防化学院,北京 102205

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Experimental Study on Explosive Dispersion Characteristics and Variation Laws of Cloud Parameters of Short Carbon Fibers
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Institute of NBC Defense, Beijing 102205, China

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    摘要:

    针对短切碳纤维爆炸分散过程设计了实验平台,根据爆炸分散不同时期的特点及要求,利用两台高速摄像机同时拍摄,分别以5万帧/s和2000帧/s的帧率记录了壳体破裂过程和云团宏观膨胀过程。通过对爆炸分散全过程序列图像的测量分析,获得了壳体破裂、云团分散成形特征,建立了爆炸分散云团直径、高度和膨胀速度随时间变化曲线。四种相似结构弹体在相同装填参数条件下爆炸分散的高速摄像记录与分析表明,短切碳纤维爆炸分散过程主要经历了壳体破裂、射流喷出、云团膨胀和湍流混合四个阶段,且分散过程遵循相似的规律,初始云团直径分别与弹体直径、碳纤维装填量的3次方根呈线性关系,初始云团高度与弹体高度呈二次多项式关系。

    Abstract:

    An experimental platform was designed for the explosive dispersion process of short carbon fibers. According to the characteristics and requirements of explosive dispersion for different periods, two high-speed cameras were used to record the fracture process of the shell and the macro-expansion process of the cloud using the frame rates of 50,000 frames per second and 2000 frames per second respectively. By measuring and analyzing the sequence images of the whole process of explosive dispersion, the characteristics of shell fracture and cloud dispersion formation were obtained, and the curves of the diameter, height and expansion velocity of explosive dispersion cloud with time were established. Analysis of the high speed video records of the explosive dispersion of four kinds of projectiles with a similar structure and identical loading parameters show that, the explosive dispersion process of short cut carbon fibers mainly goes through four stages: shell rupture, jet ejection, cloud expansion and turbulent mixing. The dispersion process follows similar laws that, the initial cloud diameter has a linear relationship with the bomb diameter and the cube root of the loading mass of fibers respectively, and the initial cloud height has a quadratic polynomial relationship with the bomb height.

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引用本文

刘志龙,王玄玉,姚伟召,等.短切碳纤维爆炸分散特征及云团参数变化规律实验研究[J].含能材料, 2019, 27(9):773-778. DOI:10.11943/CJEM2018365.
LIU Zhi-long, WANG Xuan-yu, YAO Wei-zhao, et al. Experimental Study on Explosive Dispersion Characteristics and Variation Laws of Cloud Parameters of Short Carbon Fibers[J]. Chinese Journal of Energetic Materials, 2019, 27(9):773-778. DOI:10.11943/CJEM2018365.

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  • 收稿日期: 2018-12-26
  • 最后修改日期: 2019-06-10
  • 录用日期: 2019-03-05
  • 在线发布日期: 2019-05-15
  • 出版日期: 2019-09-27