剪切增稠液体液舱侵彻实验

张朴 王卓 孔祥韶 谭柱华 吴卫国

张朴, 王卓, 孔祥韶, 谭柱华, 吴卫国. 剪切增稠液体液舱侵彻实验[J]. 爆炸与冲击, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143
引用本文: 张朴, 王卓, 孔祥韶, 谭柱华, 吴卫国. 剪切增稠液体液舱侵彻实验[J]. 爆炸与冲击, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143
ZHANG Pu, WANG Zhuo, KONG Xiangshao, TAN Zhuhua, WU Weiguo. Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles[J]. Explosion And Shock Waves, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143
Citation: ZHANG Pu, WANG Zhuo, KONG Xiangshao, TAN Zhuhua, WU Weiguo. Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles[J]. Explosion And Shock Waves, 2021, 41(4): 043301. doi: 10.11883/bzycj-2020-0143

剪切增稠液体液舱侵彻实验

doi: 10.11883/bzycj-2020-0143
基金项目: 装备预先研究教育部联合基金青年人才项目(6141A02033108)
详细信息
    作者简介:

    张 朴(1987- ),男,博士研究生,464890471@qq.com

    通讯作者:

    孔祥韶(1983- ),男,博士,副教授,博士生导师,kongxs@whut.edu.cn

  • 中图分类号: O353.4

Experimental study on a cabin filled with shear-thickening fluid penetrated by projectiles

  • 摘要: 为研究剪切增稠液体(shear-thickening fluid, STF)液舱对弹体的防护性能,制备特定规格剪切增稠液体,并开展弹体侵彻剪切增稠液舱实验研究。实验中采用高速相机记录液舱侵彻过程中空泡的演化情况,并测试得到了弹体的剩余弹速以及前后靶板变形数据。实验结果显示,剪切增稠液体可有效抑制液舱侵彻过程中空泡的增长,从而降低液舱结构的损伤程度。结合空泡扩展理论模型,并考虑液体密度以及黏度变化对空泡增长的影响,验证了剪切增稠液体在高速冲击下产生的局部密度增大以及固化现象是抑制空泡扩展的主要原因。此外,剪切增稠液体对弹体速度的衰减作用明显,且相同初始弹速下,剪切增稠液体液舱前后靶板变形明显小于水体液舱。将剪切增稠液体填充于舰船液舱防护结构,可显著提高液舱结构的防护性能。
  • 图  1  剪切增稠液体微观机理示意图

    Figure  1.  Microscopic mechanism of shear-thickening fluid

    图  2  制备完成剪切增稠液体

    Figure  2.  Finished shear-thickening fluid

    图  3  剪切增稠液体黏度-剪切应变率曲线

    Figure  3.  Viscosity-shear strain rate curve of shear-thickening fluid

    图  4  霍普金森杆测试系统布置及工装

    Figure  4.  Layout and tooling of Hopkinson bar test system

    图  5  不同剪切应变率下剪切增稠液体真实应力-应变曲线

    Figure  5.  True stress-strain curves of shear-thickening fluid at different shear strain rates

    图  6  剪切增稠液体液舱侵彻实验布置

    Figure  6.  Arrangement of the penetration test on a shear-thickening fluid cabin

    图  7  透明液舱实验模型

    Figure  7.  The transparent liquid cabin model

    图  8  水体空泡演化过程

    Figure  8.  Cavitation evolution in a water-liquid cabin

    图  9  剪切增稠液体空泡演化过程

    Figure  9.  Cavitation evolution in a shear-thickening fluid cabin

    图  10  弹体冲击过程微观结构示意图

    Figure  10.  Schematic diagrams of microstructures during projectile impact

    图  11  工况1~3实验靶板变形

    Figure  11.  Deformations of experimental bulkheads in cases 1–3

    图  12  工况1~3前后靶板变形曲线对比

    Figure  12.  Comparison of deformations of front and back bulkheads among cases 1–3

    图  13  理论模型与实验测试水体空泡演化曲线对比

    Figure  13.  Comparison between theoretical and experimental cavitation evolution curves of water body

    图  14  水体以及剪切增稠液体空泡演化曲线

    Figure  14.  Cavitation evolutions in water body and shear-thickening fluid

    图  15  液体黏度对空泡演化的影响

    Figure  15.  Effect of liquid viscosity on cavitation evolution

    表  1  剪切增稠液体密度测试结果

    Table  1.   Tested density of shear-thickening fluid

    序号剪切增稠液体样本质量/g流体密度/(g·cm−3
    15.81.16
    25.91.18
    36.01.20
    下载: 导出CSV

    表  2  剪切增稠液体液舱侵彻实验测试结果

    Table  2.   Results of the penetration experiments on shear-thickening fluid cabins

    工况液舱液体
    种类
    前靶板厚度/
    mm
    后靶板厚度/
    mm
    初始弹速/
    (m·s−1
    1空舱0.50.5 96.2
    20.50.5105.0
    3STF0.50.5105.0
    下载: 导出CSV

    表  3  剪切增稠液舱侵彻实验测试结果

    Table  3.   Results of the penetration experiments of shear-thickening fluid cabin

    工况液体种类前靶板厚度/mm后靶板厚度/mm初始弹速/(m·s−1剩余弹速/(m·s−1弹速衰减/%
    1空舱0.50.5 96.285.111.5
    20.50.5105.053.848.8
    3STF0.50.5105.038.263.6
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-05-11
  • 修回日期:  2020-10-20
  • 网络出版日期:  2021-04-14
  • 刊出日期:  2021-04-14

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