立方体弹高速侵彻防护液舱剩余特性的数值模拟

张元豪 程忠庆 侯海量 朱锡

张元豪, 程忠庆, 侯海量, 朱锡. 立方体弹高速侵彻防护液舱剩余特性的数值模拟[J]. 高压物理学报, 2019, 33(1): 015103. doi: 10.11858/gywlxb.20180576
引用本文: 张元豪, 程忠庆, 侯海量, 朱锡. 立方体弹高速侵彻防护液舱剩余特性的数值模拟[J]. 高压物理学报, 2019, 33(1): 015103. doi: 10.11858/gywlxb.20180576
ZHANG Yuanhao, CHENG Zhongqing, HOU Hailiang, ZHU Xi. Numerical Simulation of Residual Characteristics of Protecting Liquid Cabin Penetrated by High Velocity Cube Fragments[J]. Chinese Journal of High Pressure Physics, 2019, 33(1): 015103. doi: 10.11858/gywlxb.20180576
Citation: ZHANG Yuanhao, CHENG Zhongqing, HOU Hailiang, ZHU Xi. Numerical Simulation of Residual Characteristics of Protecting Liquid Cabin Penetrated by High Velocity Cube Fragments[J]. Chinese Journal of High Pressure Physics, 2019, 33(1): 015103. doi: 10.11858/gywlxb.20180576

立方体弹高速侵彻防护液舱剩余特性的数值模拟

doi: 10.11858/gywlxb.20180576
基金项目: 国家自然科学基金(51679246)
详细信息
    作者简介:

    张元豪(1992-),男,博士研究生,主要从事舰船防护研究. E-mail:158241904@qq.com

    通讯作者:

    程忠庆 (1964-),男,教授,主要从事材料性能研究. E-mail: bace@tom.com

  • 中图分类号: O344.7

Numerical Simulation of Residual Characteristics of Protecting Liquid Cabin Penetrated by High Velocity Cube Fragments

  • 摘要: 针对高速破片侵彻液舱后的剩余特性问题,利用有限元分析软件ANSYS/LS-DYNA开展了数值模拟研究,对比分析破片侵彻垂直和倾斜液舱后速度的衰减规律以及侵彻深度的变化规律,探讨了舰艇中液舱的较优斜置角度。结果表明:液舱壁面倾斜角的存在有利于降低破片入水的瞬时速度;破片入水瞬时速度越大,在水中运动时速度衰减越快;在冲击及空泡阶段,破片侵彻深度迅速增加,且破片入水瞬时速度越大,侵彻深度增加越明显,该阶段侵彻深度仅相当于破片最终静止时侵深的10%左右。根据弹体速度衰减速率及侵彻深度的增加速率,认为倾斜60°的液舱能够达到较好的防护效果。

     

  • 图  1/2液舱结构的有限元模型

    Figure  1.  Finite element model for half liquid cabin

    图  水域和空气域网格

    Figure  2.  Mesh of water and air

    图  工况1中侵彻距离-时间曲线模拟结果

    Figure  3.  Simulated penetration distance vs. time for Case 1

    图  工况1中破片在水中的运动位移时程曲线

    Figure  4.  Displacement-time history of fragment for Case 1

    图  速度随时间的变化曲线

    Figure  5.  Variation of penetration distance with time

    图  侵彻距离随时间的变化曲线

    Figure  6.  Curve of the penetration distance with time

    图  速度随时间的变化曲线

    Figure  7.  Variation of velocity with time

    图  侵彻距离随时间的变化曲线

    Figure  8.  Variation of penetration distance with time

    表  1  数值模型与试验工况

    Table  1.   Numerical models and experimental condition

    Case θ/(°) v0/(m·s–1) vw/(m·s–1) Deviation/%
    Experiment[12] Simulation
    1 0 1 105.0 286.0 278 –3.0
    2 0 1 231.2 462.7 456 –1.4
    3 30 1 058.1 202.9 200 –1.4
    4 30 1 290.3 385.9 384 –0.5
    下载: 导出CSV

    表  2  弹体初速与侵彻深度的关系

    Table  2.   Initial velocity vs. penetration depth

    Case θ/(°) v0/(m·s-1) P100 m/s/mm Pfinal/mm (P100 m/s/Pfinal)/%
    1 0 1 105.0 41.2 375.1 11.0
    2 0 1 231.2 37.1 305.0 12.2
    3 30 1 058.1 20.0 234.2 8.5
    4 30 1 290.3 45.4 333.4 13.6
    下载: 导出CSV

    表  3  侵彻角度与弹体入水瞬时速度及侵彻深度的关系

    Table  3.   Penetration angle vs. instantaneous velocity and penetration depth

    Case θ/(°) vw/(m·s-1) P100 m/s/mm Case θ/(°) vw/(m·s-1) P100 m/s/mm
    5 0 447 56.0 10 25 352 49.3
    6 5 436 58.9 11 30 325 31.6
    7 10 421 54.3 12 35 295 18.5
    8 15 407 55.9 13 40 0 0
    9 20 377 47.8
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-06-08
  • 修回日期:  2018-07-17

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