水下爆炸下典型舰船结构整体损伤模式表征方法及图谱研究

张弛 刘凯 李海涛 梅志远 郑欣颖

张弛, 刘凯, 李海涛, 梅志远, 郑欣颖. 水下爆炸下典型舰船结构整体损伤模式表征方法及图谱研究[J]. 爆炸与冲击, 2022, 42(6): 065101. doi: 10.11883/bzycj-2021-0200
引用本文: 张弛, 刘凯, 李海涛, 梅志远, 郑欣颖. 水下爆炸下典型舰船结构整体损伤模式表征方法及图谱研究[J]. 爆炸与冲击, 2022, 42(6): 065101. doi: 10.11883/bzycj-2021-0200
ZHANG Chi, LIU Kai, LI Haitao, MEI Zhiyuan, ZHENG Xinying. Study on the characterization method and mode map of overall damage of typical warship structures subjected to underwater explosions[J]. Explosion And Shock Waves, 2022, 42(6): 065101. doi: 10.11883/bzycj-2021-0200
Citation: ZHANG Chi, LIU Kai, LI Haitao, MEI Zhiyuan, ZHENG Xinying. Study on the characterization method and mode map of overall damage of typical warship structures subjected to underwater explosions[J]. Explosion And Shock Waves, 2022, 42(6): 065101. doi: 10.11883/bzycj-2021-0200

水下爆炸下典型舰船结构整体损伤模式表征方法及图谱研究

doi: 10.11883/bzycj-2021-0200
基金项目: 国家自然科学基金(51679244)
详细信息
    作者简介:

    张 弛(1997- ),男,硕士研究生,zc_nue@163.com

    通讯作者:

    李海涛(1979- ),男,博士,副教授,navy_lht@163.com

  • 中图分类号: O383.3;U661.4

Study on the characterization method and mode map of overall damage of typical warship structures subjected to underwater explosions

  • 摘要: 随着舰船抗爆炸冲击总体结构优化设计及水中兵器攻击效能评估研究的深入,建立水下中近距非接触爆炸作用下舰船整体损伤模式的快速判定方法尤为重要。通过Abaqus软件建立了爆炸冲击波和气泡联合作用下舰船结构整体损伤特性的数值模拟方法并进行了实验验证;分析了水下爆炸载荷强度及舰船结构强度等参数变化对结构整体损伤模式的影响,提出了综合反映爆炸冲击波和气泡联合作用的新型冲击强度因子C4,表征舰船结构总体强度的结构强度因子S,初步构建了舰船整体损伤模式分布图谱C4-S。研究结果表明,建立的数值方法能较好预测舰船结构整体损伤模式和总体变形,误差不超过10%;提出的两类因子能分别合理表征水下爆炸强度和舰船结构强度,构建的损伤模式分布图谱能较好区分不同爆炸强度、舰船结构强度下的舰船整体中拱、中垂、鞭状损伤模式,可实现对水下爆炸下舰船整体损伤模式的快速判定。
  • 图  1  数值计算模型及网格

    Figure  1.  Numerical calculation models and meshes

    图  2  船体梁模型及水下爆炸实验布置示意图

    Figure  2.  Schematic of girder model and underwater explosion experimental layout

    图  3  船体梁中部垂向运动过程实验与数值模拟对比图(正值为中拱变形,负值为中垂变形)

    Figure  3.  Comparison between experiment and simulation process of vertical movement at middle of girder (positive value represents hogging deformation; negative value represents sagging deformation)

    图  4  船体梁中点位移时程曲线数值结果和实验结果对比

    Figure  4.  Comparison between numerical and experimental displacement-time curves at the girder’s mid-point

    图  5  沿长度方向船体梁垂向变形数值结果和实验结果对比

    Figure  5.  Comparison between numerical and experimental girder’s vertical deformations along longitudinal direction

    图  6  船体梁底部最终变形数值模拟和实验结果对比

    Figure  6.  Comparison between numerical and experimental final deformation of the girder’s bottom

    图  7  水下爆炸计算工况纵、横向点位布置示意图

    Figure  7.  Schematic of longitudinal and transverse layout of underwater explosion calculation case

    图  8  典型舰船中拱/中垂损伤模式示意图

    Figure  8.  Schematic of hogging and sagging damage mode of typical warship

    图  9  爆径比-结构强度因子整体损伤模式分布图谱

    Figure  9.  The ratio of standoff and maximum bubble radius-structural strength factor overall damage mode distribution atlas

    图  10  球面波修正的冲击因子-结构强度因子整体损伤模式分布图谱

    Figure  10.  The shock factor of spherical wave correction-structural strength factor overall damage mode distribution atlas

    图  11  新型冲击强度因子-结构强度因子整体损伤模式分布图谱

    Figure  11.  The new shock factor-structural strength factor overall damage mode distribution atlas

    表  1  Johnson-Cook本构模型及失效模型参数[18]

    Table  1.   Johnson-Cook constitutive model and failure model parameters [18]

    A/GPaB/GPaCnmD1D2D3D4D5
    0.250.890.0580.750.940.381.472.58−0.00158.07
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-05-19
  • 修回日期:  2021-12-16
  • 网络出版日期:  2022-05-13
  • 刊出日期:  2022-06-24

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