PELE侵彻金属靶破碎效应的相似分析

徐立志 韩志远 周峰 胖世铭 杜忠华 高光发

徐立志, 韩志远, 周峰, 胖世铭, 杜忠华, 高光发. PELE侵彻金属靶破碎效应的相似分析[J]. 高压物理学报, 2023, 37(1): 015103. doi: 10.11858/gywlxb.20220662
引用本文: 徐立志, 韩志远, 周峰, 胖世铭, 杜忠华, 高光发. PELE侵彻金属靶破碎效应的相似分析[J]. 高压物理学报, 2023, 37(1): 015103. doi: 10.11858/gywlxb.20220662
XU Lizhi, HAN Zhiyuan, ZHOU Feng, PANG Shiming, DU Zhonghua, GAO Guangfa. Similar Analysis of PELE Penetrating Metal Target Fragmentation Effect[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015103. doi: 10.11858/gywlxb.20220662
Citation: XU Lizhi, HAN Zhiyuan, ZHOU Feng, PANG Shiming, DU Zhonghua, GAO Guangfa. Similar Analysis of PELE Penetrating Metal Target Fragmentation Effect[J]. Chinese Journal of High Pressure Physics, 2023, 37(1): 015103. doi: 10.11858/gywlxb.20220662

PELE侵彻金属靶破碎效应的相似分析

doi: 10.11858/gywlxb.20220662
基金项目: 国家自然科学基金(12202207,12172179,12102201);江苏省自然科学基金(BK20220968);国家博士后基金(2022M711623);宁波大学冲击与安全工程教育部重点实验室开放基金(CJ202201)
详细信息
    作者简介:

    徐立志(1990-),男,博士,主要从事高效毁伤与防护技术研究. E-mail:xulznjust@163.com

    通讯作者:

    杜忠华(1971-),男,博士,研究员,主要从事智能毁伤与防护技术研究. E-mail:duzhonghua@aliyun.com

  • 中图分类号: O383

Similar Analysis of PELE Penetrating Metal Target Fragmentation Effect

  • 摘要: 为了研究横向效应增强型侵彻体(penetrator with enhanced lateral effects, PELE)侵彻金属靶板破碎效应的相似规律,选取PELE的壳体破碎长度和靶后破片散布半径作为衡量PELE破碎效应的两个物理参量,基于量纲理论对PELE破碎效应问题进行相似分析,应用AUTODYN软件开展了4组相似模型数值模拟,并进行了两组相似模型验证试验。研究结果表明:通过相似理论分析,确定了PELE破碎效应满足严格的几何相似律。在800~2000 m/s撞击速度范围内,归一化处理的壳体破碎长度和靶后破片散布半径数值模拟结果及试验结果与几何尺寸无关,仅随撞击速度的提升呈线性增长,从而证明了PELE侵彻金属靶的破碎效应满足几何相似律。

     

  • 图  PELE侵彻金属靶板模型

    Figure  1.  Simulation model of PELE penetrating metal target

    图  靶后破片速度的模拟与试验结果对比

    Figure  2.  Comparison of simulation and test results of fragmentation velocities behind target

    图  PELE破碎形态的模拟与试验结果对比

    Figure  3.  Comparison of simulation and test results of PELE broken form

    图  不同比例模型中壳体破碎长度随撞击速度的变化

    Figure  4.  Variation of breaking length of jacket with impact velocity in different scale models

    图  归一化壳体破碎长度随撞击速度的变化

    Figure  5.  Variation of normalized breaking length of jacket with impact velocity in different scale models

    图  4种比例模型得到的PELE破片散布情况

    Figure  6.  Dispersion of PELE fragments obtained by four scale models

    图  不同比例模型中破片散布半径随撞击速度的变化

    Figure  7.  Variation of fragment dispersion radius with impact velocity in different scale models

    图  归一化破片散布半径随撞击速度的变化

    Figure  8.  Variation of normalized fragment dispersion radius with impact velocity

    图  破片在后效靶的散布情况

    Figure  9.  Distribution of fragments on the aftereffect target

    图  10  破片散布直径与撞击速度关系的试验结果

    Figure  10.  Test results of the relationship between fragment dispersion diameter and impact velocity

    表  1  PELE和靶板材料模型参数

    Table  1.   Material model parameters of PELE and metal target

    Componentρ/(g·cm−3)Grüneisen coefficientC1/(km·s−1)S1Shear modulus/GPaYield
    stress/GPa
    Plastic strain
    Jacket (D-180 K)18.000 04.031.237139.0 1.50
    Filling (A-G3)2.6501.975.241.40027.50.30
    Steel target
    (XC 48)
    7.82304.571.49077.00.801.2
    Aluminum target (A-U4G)2.8002.05.201.36026.70.401.2
    ComponentPrincipal tensile
    failure stress/GPa
    Principal tensile
    failure strain
    Crack softeningFracture energy/(J·m−2)Stochastic failureStochastic varianceErosion strain
    Jacket (D-180 K)2.80.035Yes45Yes36.650.6
    Filling (A-G3)0.5NoNo0.8
    Steel target
    (XC 48)
    NoNo
    Aluminum target (A-U4G)NoNo
    下载: 导出CSV

    表  2  不同比例模型的几何参数

    Table  2.   Geometric parameters of different scale model

    λd1/mmd2/mmL/mml/mmD/mmH/mms/mmv/(m·s−1)
    1532522.5101.50.125800–2000
    21065045.0203.00.250
    31597567.5304.50.500
    4201210090.0406.00.750
    下载: 导出CSV

    表  3  PELE弹丸和靶板的几何尺寸

    Table  3.   Geometric dimension of PELE projectile and target plate

    λd1/mmd2/mmL/mml/mmH/mmv/(m·s−1)
    110 72522.53800–1600
    220145090.06
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-09-20
  • 修回日期:  2022-11-13
  • 录用日期:  2023-01-09
  • 网络出版日期:  2023-02-28
  • 刊出日期:  2023-02-05

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