块石混凝土遮弹层界面对抗侵彻性能影响的数值模拟研究

柳兴旺 邓旭艳 秦青阳 王银

柳兴旺, 邓旭艳, 秦青阳, 王银. 块石混凝土遮弹层界面对抗侵彻性能影响的数值模拟研究[J]. 高压物理学报, 2023, 37(2): 025101. doi: 10.11858/gywlxb.20220669
引用本文: 柳兴旺, 邓旭艳, 秦青阳, 王银. 块石混凝土遮弹层界面对抗侵彻性能影响的数值模拟研究[J]. 高压物理学报, 2023, 37(2): 025101. doi: 10.11858/gywlxb.20220669
LIU Xingwang, DENG Xuyan, QIN Qingyang, WANG Yin. Numerical Investigation on Effect of Interface Modelling of Rock-Rubble Shielding Overlays on the Anti-Penetration Capability[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 025101. doi: 10.11858/gywlxb.20220669
Citation: LIU Xingwang, DENG Xuyan, QIN Qingyang, WANG Yin. Numerical Investigation on Effect of Interface Modelling of Rock-Rubble Shielding Overlays on the Anti-Penetration Capability[J]. Chinese Journal of High Pressure Physics, 2023, 37(2): 025101. doi: 10.11858/gywlxb.20220669

块石混凝土遮弹层界面对抗侵彻性能影响的数值模拟研究

doi: 10.11858/gywlxb.20220669
基金项目: 中国电力建设股份有限公司科技项目(DJ-ZDZX-2019-02)
详细信息
    作者简介:

    柳兴旺(1986-),男,博士,高级工程师,主要从事地下工程防灾设计及管理研究.E-mail:1915252557@qq.com

  • 中图分类号: O385

Numerical Investigation on Effect of Interface Modelling of Rock-Rubble Shielding Overlays on the Anti-Penetration Capability

  • 摘要: 基于三维细观建模方法和Kong-Fang混凝土材料模型,开展了某弹体侵彻块石混凝土遮弹层的数值模拟研究。采用块石与基体混凝土共节点建模和面面接触建模两种方式,探讨了界面对弹体过载、侵彻深度以及混凝土与块石损伤破坏的影响。数值模拟结果表明:块石与混凝土共节点建模方式强化了块石与混凝土间的界面效应,高估了靶体的整体性,而面面接触建模方式弱化了界面效应,故采用共节点建模方式时,弹体过载(加速度)偏大,侵彻深度偏小;采用共节点建模方式时,损伤区域沿C100混凝土和块石交界面发展,损伤区域连续,而采用面面接触建模方式时,损伤区域在弹道近区连续,近区与远区损伤不连续。基于数值模拟结果,进一步对块石混凝土遮弹层的工程设计计算提出了实用性建议。

     

  • 图  弹体尺寸

    Figure  1.  Projectile dimension

    图  弹体和块石混凝土有限元模型

    Figure  2.  Finite element models of projectile and rock-rubble overlays

    图  块石混凝土遮弹层数值建模步骤

    Figure  3.  Modelling procedure of rock-rubble overlays

    图  基体混凝土与块石之间相互作用的两种建模方式

    Figure  4.  Two modeling methods of interactions between matrix concrete and rock

    图  加速度时程曲线

    Figure  5.  Acceleration-time history curves

    图  接触力时程曲线

    Figure  7.  Contact force-time history curves

    图  侵彻深度时程曲线

    Figure  6.  Penetration depth-time history curves

    图  C100混凝土的损伤破坏

    Figure  8.  Damage of C100 concrete

    图  块石的损伤破坏

    Figure  9.  Damage of rubble

    图  10  弹体变形与偏转

    Figure  10.  Deformation and deflection of projectile

    图  11  固结体侵彻计算结果

    Figure  11.  Numerical simulation results of concretion target subjected to penetration

    表  1  C100混凝土模型参数

    Table  1.   Model parameters of C100 concrete

    a1a2εfracd1d2d3α
    0.587 60.025/fc0.010.041.50.000 11.0
    下载: 导出CSV

    表  2  HJC材料模型参数

    Table  2.   HJC material model parameters

    Basic mechanical parameters Damage parameters Strain-rate parameter
    ρ/(kg·m−3)fc/MPaG/GPaT/MPaD1D2εminC
    2 60012028.78 0.0410.01 0.007
    Strength surface parameters Pressure parameters
    ABNSmaxpcrush/MPaμcrushK1/GPa K2/GPaK3/GPa
    0.32.50.0077 400.002 1612 2542
    下载: 导出CSV

    表  3  计算工况

    Table  3.   Calculation cases

    CasesProjectile propertyContact modeNumber
    1RigidConedeR-1
    2Surface-to-surfaceR-2
    3DeformationConedeD-1
    4Surface-to-surfaceD-2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-10-05
  • 修回日期:  2022-10-27
  • 录用日期:  2023-03-09
  • 网络出版日期:  2023-04-13
  • 刊出日期:  2023-04-05

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