马赫杆加载下无氧铜的动态破碎

叶川兵 段志伟 李绪海 王曦 潘昊 俞宇颖 胡建波

叶川兵, 段志伟, 李绪海, 王曦, 潘昊, 俞宇颖, 胡建波. 马赫杆加载下无氧铜的动态破碎[J]. 爆炸与冲击, 2023, 43(11): 113101. doi: 10.11883/bzycj-2023-0172
引用本文: 叶川兵, 段志伟, 李绪海, 王曦, 潘昊, 俞宇颖, 胡建波. 马赫杆加载下无氧铜的动态破碎[J]. 爆炸与冲击, 2023, 43(11): 113101. doi: 10.11883/bzycj-2023-0172
YE Chuanbing, DUAN Zhiwei, LI Xuhai, WANG Xi, PAN Hao, YU Yuying, HU Jianbo. Dynamic fragmentation of oxygen-free high-conducting copper under Mach stem loading[J]. Explosion And Shock Waves, 2023, 43(11): 113101. doi: 10.11883/bzycj-2023-0172
Citation: YE Chuanbing, DUAN Zhiwei, LI Xuhai, WANG Xi, PAN Hao, YU Yuying, HU Jianbo. Dynamic fragmentation of oxygen-free high-conducting copper under Mach stem loading[J]. Explosion And Shock Waves, 2023, 43(11): 113101. doi: 10.11883/bzycj-2023-0172

马赫杆加载下无氧铜的动态破碎

doi: 10.11883/bzycj-2023-0172
基金项目: 国家自然科学基金(12072331)
详细信息
    作者简介:

    叶川兵(1997- ),硕士研究生, ychuanbing@foxmail.com

    通讯作者:

    胡建波(1980- ),博士,研究员, jianbo.hu@caep.cn

  • 中图分类号: O383

Dynamic fragmentation of oxygen-free high-conducting copper under Mach stem loading

  • 摘要: 为了深入了解金属材料在复杂加载下的动态破碎行为,在有限元模拟的基础上,设计了两类马赫杆加载实验,用于研究无氧铜在复杂加载下的动态破碎行为。实验中,采用火炮加载马赫透镜和激光粒子速度干涉仪测量自由面速度,实现了峰值压力分别为95.75和32.38 GPa的动态加载。结果表明,实验中成功实现了稳定的马赫杆加载,并且观察到马赫杆加载下无氧铜的2种不同近表面破碎模式,即高压下产生微层裂、低压下产生三角波层裂,且层裂区呈凸形分布。
  • 图  1  马赫透镜结构

    Figure  1.  Structure of Mach lens

    图  2  两类马赫杆加载下压力流场随时间演化的模拟结果

    Figure  2.  Numerically-simulated evolutions of pressure contours under two types of Mach stem loading

    图  3  实验Mach-1中圆柱试样靶中心线上等间距拉格朗日点的压强和速度模拟结果

    Figure  3.  Simulated velocity- and pressure-time evolutions of equidistant Lagrangian particles on the symmetrical centerline of the cylindrical specimen target in experiment Mach-1

    图  4  两类马赫杆加载实验设计

    Figure  4.  Experimental arrangements of two types of Mach stem loading

    图  5  实验Mach-1中铝套筒后自由面粒子速度剖面实验结果与模拟结果的比较

    Figure  5.  Comparison of rear free-surface particle velocity profiles of the aluminum sleeve in experiment Mach-1with the corresponding simulated ones

    图  6  实验 Mach-1中内圆柱中心处的DPS时谱图和自由面粒子速度剖面

    Figure  6.  DPS time-frequency spectrum and free-surface particle velocity profile at the center of the inner cylinder in experiment Mach-1

    图  7  实验Mach-2中不同位置处粒子速度剖面的实验结果与模拟结果的比较

    Figure  7.  Comparison of experimental and simulated results of particle velocity profiles at different positions in experiment Mach-2

    图  8  实验Mach-2中试样破坏形貌的模拟结果

    Figure  8.  Simulated failure morphologies of the specimen in experiment Mach-2

    表  1  Mie-Grüneisen状态方程参数[18-20]

    Table  1.   Parameters of Mie-Grüneisen equations of state[18-20]

    材料ρ0/(g·cm−3)c0/(km·s−1)sγ来源
    304不锈钢7.904.571.49 1.93文献[18]
    LY12铝2.795.371.29 2.0 文献[19]
    无氧铜8.933.941.4892.02文献[18]
    TC4钛合金4.425.131.0281.23文献[20]
    下载: 导出CSV

    表  2  Johnson-Cook本构模型参数[17, 21-23]

    Table  2.   Parameters of the Johnson-Cook constitutive model[17, 21-23]

    材料A/MPaB/MPanCmTm/K来源
    304不锈钢31010000.650.071.01673文献[21]
    LY12铝3696840.730.00831.7775文献[22]
    无氧铜902920.310.0251.091356文献[17]
    TC4钛合金8623310.340.0120.82110文献[23]
    下载: 导出CSV

    表  3  设计参数

    Table  3.   Parameters of experimental design

    实验编号 材料 飞片速度/(km·s−1) 厚度/mm 直径/mm
    飞片 外圆 内圆 飞片 样靶 内圆 外圆
    Mach-1 304不锈钢 LY12 铝 无氧铜 1.40 3.0 16.0 4.8 38.0
    Mach-2 304不锈钢 TC4钛合金 无氧铜 0.50 12.0 26.0 14.0 45.0
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-05-10
  • 修回日期:  2023-05-22
  • 网络出版日期:  2023-07-19
  • 刊出日期:  2023-11-17

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