装配式混凝土遮弹层抗弹体侵彻的数值模拟和工程设计方法

杨耀宗 孔祥振 汤俊杰 方秦

杨耀宗, 孔祥振, 汤俊杰, 方秦. 装配式混凝土遮弹层抗弹体侵彻的数值模拟和工程设计方法[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0279
引用本文: 杨耀宗, 孔祥振, 汤俊杰, 方秦. 装配式混凝土遮弹层抗弹体侵彻的数值模拟和工程设计方法[J]. 爆炸与冲击. doi: 10.11883/bzycj-2024-0279
YANG Yaozong, KONG Xiangzhen, TANG Junjie, FANG Qin. Numerical simulation and engineering design method for prefabricated concrete bursting layer subjected to projectile penetration[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0279
Citation: YANG Yaozong, KONG Xiangzhen, TANG Junjie, FANG Qin. Numerical simulation and engineering design method for prefabricated concrete bursting layer subjected to projectile penetration[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0279

装配式混凝土遮弹层抗弹体侵彻的数值模拟和工程设计方法

doi: 10.11883/bzycj-2024-0279
基金项目: 国家自然科学基金(52178515)
详细信息
    作者简介:

    杨耀宗(1998- ),男,博士研究生,yyz542968@163.com

    通讯作者:

    孔祥振(1988- ),男,博士,副教授,ouckxz@163.com

  • 中图分类号: O385

Numerical simulation and engineering design method for prefabricated concrete bursting layer subjected to projectile penetration

  • 摘要: 为更好地将湿接缝+短钢筋装配式混凝土遮弹层应用于防护工程中,首先,基于已有弹体侵彻整体式和装配式靶体的试验,利用Kong-Fang混凝土材料模型和LS-DYNA中的光滑粒子伽辽金算法建立了相应的数值模型,并得到了验证;然后,基于验证的数值模型,系统探讨了装配块尺寸、湿接缝宽度、短钢筋锚固长度、短钢筋间距和短钢筋直径对装配式靶体抗侵彻性能的影响,给出了装配式混凝土遮弹层的工程设计方法;最后,采用该方法设计了抗2种典型战斗部侵彻的装配式高性能混凝土遮弹层。数值模拟结果表明:装配块尺寸对装配式靶体的抗侵彻性能影响较小,而增加湿接缝宽度能够有效提升装配式靶体的抗侵彻性能,即湿接缝宽度越大,装配率越低,靶体整体性就越好。短钢筋是加强装配块与湿接缝连接的有效措施,与增加短钢筋直径相比,增加短钢筋锚固长度和减小短钢筋间距能更显著地提升装配式靶体的抗侵彻性能。
  • 图  1  整体式靶体[7]和装配式靶体[8]的剖面图

    Figure  1.  Cross-sectional views of monolithic target[7] and prefabricated target[8]

    图  2  整体式靶体和装配式靶体的数值模型

    Figure  2.  Numerical models for monolithic target and prefabricated target

    图  3  侵彻深度、靶体开坑损伤破坏的数值模拟结果与试验值的对比

    Figure  3.  Comparisons of numerically predicted penetration depth and damage contour at frontal surfaces with test data

    图  4  基准工况的数值模型及模拟结果[8]

    Figure  4.  Numerical model and results for benchmark[8]

    图  5  不同装配块尺寸的靶体数值模型

    Figure  5.  Numerical models for prefabricated targets with various sizes of prefabricated blocks

    图  6  不同装配块尺寸工况下弹体的侵彻深度及加速度时程曲线

    Figure  6.  Penetration depth and time history curves of projectile acceleration for cases with various block sizes

    图  7  不同湿接缝宽度的靶体数值模型

    Figure  7.  Numerical models for prefabricated targets with various widths of wet joints

    图  8  不同湿接缝宽度工况下弹体侵彻深度及加速度时程曲线

    Figure  8.  Penetration depth and time history curves of projectile acceleration for cases with various widths of wet joints

    图  9  不同短钢筋锚固长度的装配块

    Figure  9.  Prefabricated blocks with different anchorage lengths of rebars

    图  10  预制块内短钢筋的布置(M*=9.375)

    Figure  10.  Layout of rebars inside prefabricated block (M*=9.375)

    图  11  M*=3.125和M*=12.500工况下靶体内钢筋等效塑性应变云图

    Figure  11.  Numerically predicted effective plastic strain contour of rebars for Case M-3d0 and M-12d0

    图  12  不同短钢筋间距的装配块

    Figure  12.  Prefabricated blocks with various spacing of rebars

    图  13  战斗部的有限元模型

    Figure  13.  Numerical models for two warheads

    图  14  装配块的尺寸信息(单位:mm)

    Figure  14.  Dimensions of prefabricated blocks for two warheads (unit: mm)

    图  15  2种装配式靶体的数值模型

    Figure  15.  Numerical models for two prefabricated targets

    图  16  2种装配式靶体损伤破坏云图

    Figure  16.  Damage contours in two prefabricated targets

    表  1  侵彻试验结果[7-8]

    Table  1.   Experimental results for penetration tests[7-8]

    试验编号 弹体质量/kg 侵彻速度/(m·s−1) 侵彻深度/m Dh/m Dv/m D1/m D2/m Dm/m
    ZT-1 35.58 365 0.75 1.04 1.06 1.05 1.15 1.08
    ZP-2 35.66 359 0.74 0.43 0.54 0.69 0.69 0.59
    下载: 导出CSV

    表  2  不同装配块尺寸工况下弹体侵彻深度和靶体损伤云图

    Table  2.   Numerically predicted penetration depth and damage contours in prefabricated targets with various block sizes

    V* 装配率/% h* 损伤云图 V* 装配率/% h* 损伤云图
    3.2 39 1.176 5.6 54 1.167
    4.0 46 1.174 6.4 57 1.172
    4.8 50 1.174 7.2 63 1.162
    下载: 导出CSV

    表  3  不同湿接缝宽度工况下弹体侵彻深度和靶体损伤云图

    Table  3.   Numerically predicted penetration depth and damage contours in prefabricated targets with various widths of wet joints

    S* 装配率/% h* 损伤云图 S* 装配率/% h* 损伤云图
    0.8 69 1.256 2.4 39 1.151
    1.2 59 1.235 2.8 35 1.140
    1.6 50 1.206 3.2 32 1.120
    2.0 46 1.174 4.0 26 1.096
    下载: 导出CSV

    表  4  不同短钢筋锚固长度工况下弹体侵彻深度和靶体损伤云图

    Table  4.   Numerically predicted penetration depth and damage contours in targets for different anchorage lengths of rebars

    M* 配筋率/% h* 损伤云图 M* 配筋率/% h* 损伤云图
    0 0 1.174 9.375 1.18 1.098
    3.125 0.40 1.132 12.500 1.57 1.083
    6.250 0.81 1.115
    下载: 导出CSV

    表  5  不同短钢筋间距工况下弹体侵彻深度和靶体损伤云图

    Table  5.   Numerically predicted penetration depth and damage contours in targets for different spacing of rebars

    J* 配筋率/% h* 损伤云图 J* 配筋率/% h* 损伤云图
    4.4 0.37 1.152 1.2 1.63 1.098
    3.6 0.82 1.129 0.9 2.00 1.083
    1.8 1.18 1.098
    下载: 导出CSV

    表  6  不同短钢筋直径工况下弹体侵彻深度和靶体损伤云图

    Table  6.   Numerically predicted penetration depth and damage contours in targets for different diameters of rebars

    d0/mm 配筋率/% h* 损伤云图 d0/m 配筋率/% h* 损伤云图
    6 0.17 1.142 22 2.24 1.085
    12 0.67 1.135 25 2.89 1.082
    16 1.18 1.098
    下载: 导出CSV

    表  7  2种战斗部参数[25-26]

    Table  7.   Parameters of two warheads[25-26]

    战斗部 直径/
    m
    质量/
    kg
    长度/
    m
    壁厚/
    mm
    头部
    曲径比
    SDB 0.152 113 1.8 10.8 3
    BLU-109/B 0.368 874 2.4 25.4 3
    下载: 导出CSV
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  • 收稿日期:  2024-08-11
  • 修回日期:  2024-09-30
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