弹体贯穿钢筋混凝土板有限元模型比较分析

李猛深 葛涛 程文聘 裴国庆

李猛深, 葛涛, 程文聘, 裴国庆. 弹体贯穿钢筋混凝土板有限元模型比较分析[J]. 高压物理学报, 2022, 36(2): 024206. doi: 10.11858/gywlxb.20210816
引用本文: 李猛深, 葛涛, 程文聘, 裴国庆. 弹体贯穿钢筋混凝土板有限元模型比较分析[J]. 高压物理学报, 2022, 36(2): 024206. doi: 10.11858/gywlxb.20210816
LI Mengshen, GE Tao, CHENG Wenpin, PEI Guoqing. A Comparative Study on the Finite Element Models for Projectiles Perforation into Reinforced Concrete Slabs[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 024206. doi: 10.11858/gywlxb.20210816
Citation: LI Mengshen, GE Tao, CHENG Wenpin, PEI Guoqing. A Comparative Study on the Finite Element Models for Projectiles Perforation into Reinforced Concrete Slabs[J]. Chinese Journal of High Pressure Physics, 2022, 36(2): 024206. doi: 10.11858/gywlxb.20210816

弹体贯穿钢筋混凝土板有限元模型比较分析

doi: 10.11858/gywlxb.20210816
基金项目: 国家自然科学基金(51508568)
详细信息
    作者简介:

    李猛深(1984-),男,博士,副教授,主要从事防护工程研究. E-mail:getaoge@163.com

  • 中图分类号: O383.2

A Comparative Study on the Finite Element Models for Projectiles Perforation into Reinforced Concrete Slabs

  • 摘要: 为研究钢筋对混凝土靶侵彻作用的影响,基于混合物理论,建立了钢筋混凝土的等效混合物模型,同时还建立了将钢筋等效为钢板和素混凝土板的有限元模型,并通过弹体贯穿剩余速度、靶体压力场对两种方法进行比较,分析侵彻作用过程。计算结果表明:基于混合物理论的等效钢筋混凝土混合物模型能够较好地反映侵彻时钢筋的作用,既可以满足计算精度,又能够简化建模过程,提高计算效率,是进行侵彻数值分析的有效简化方法;钢筋混凝土板自由表面附近的钢筋分布能够提高靶对弹体的阻力,但其作用效果有限。

     

  • 图  钢筋混凝土靶板(a)和等效混合物模型(b)

    Figure  1.  Reinforced concrete slab target (a) and the equivalent mixture model (b)

    图  弹靶的有限元模型

    Figure  2.  Finite element models for projectiles and targets

    图  素混凝土板上表面的损伤变化

    Figure  3.  Damage evolution process on the upper surface of the plain concrete slab

    图  弹体贯穿过程

    Figure  4.  Penetration process of projectiles into reinforced concrete slabs

    图  靶体压力场

    Figure  5.  Pressure fields of targets

    表  1  钢筋、混凝土及混合物的材料参数

    Table  1.   Material parameters of rebar, concrete and their mixture

    Materials${\,\rho }$0/(g·cm−3)c0/(km·s−1)s0Ys/GPaG/GPa${\gamma }$0$ {V{_1}} $($ {V{_2}} $)
    Rebar7.854.571.490.32790.020.2
    Concrete2.202.331.510.081.720.8
    Mixture3.332.581.500.132.12
    下载: 导出CSV

    表  2  钢筋混凝土贯穿实验与数值计算结果

    Table  2.   Experimental and numerical simulation results for perforation into reinforced concrete slabs

    Target No.ModelsImpact velocity/(m·s–1)Perforation velocity/(m·s–1)Deviation/%
    Exp. Sim.
    1Mixture equivalent slab3009310613
    2Steel layers equivalent slab 30093100 8
    3Plain concrete slab 300116 12912
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-06-18
  • 修回日期:  2021-08-09
  • 录用日期:  2022-09-30

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