混凝土薄板侵彻贯穿问题的SPH数值模拟

强洪夫 孙新亚 王广 陈福振

强洪夫, 孙新亚, 王广, 陈福振. 混凝土薄板侵彻贯穿问题的SPH数值模拟[J]. 高压物理学报, 2019, 33(2): 024101. doi: 10.11858/gywlxb.20180634
引用本文: 强洪夫, 孙新亚, 王广, 陈福振. 混凝土薄板侵彻贯穿问题的SPH数值模拟[J]. 高压物理学报, 2019, 33(2): 024101. doi: 10.11858/gywlxb.20180634
QIANG Hongfu, SUN Xinya, WANG Guang, CHEN Fuzhen. Numerical Simulation of Penetration in Concrete Sheet Based on SPH Method[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 024101. doi: 10.11858/gywlxb.20180634
Citation: QIANG Hongfu, SUN Xinya, WANG Guang, CHEN Fuzhen. Numerical Simulation of Penetration in Concrete Sheet Based on SPH Method[J]. Chinese Journal of High Pressure Physics, 2019, 33(2): 024101. doi: 10.11858/gywlxb.20180634

混凝土薄板侵彻贯穿问题的SPH数值模拟

doi: 10.11858/gywlxb.20180634
详细信息
    作者简介:

    强洪夫(1963-),男,博士,教授,博士生导师,主要从事结构强度研究. E-mail: qiang@263.net

    通讯作者:

    孙新亚(1993-),男,硕士研究生,主要从事爆炸冲击研究. E-mail: 1430167246@qq.com

  • 中图分类号: O385

Numerical Simulation of Penetration in Concrete Sheet Based on SPH Method

  • 摘要: 随着混凝土结构强度的不断提高,越来越多的防护工事选择混凝土作为主要建筑材料。在光滑粒子流体动力学方法的基础上,提出了TCK-HJC复合本构模型,对锥形弹刚性侵彻过程中混凝土薄板的变形损伤进行数值模拟,采用拟流体模型处理失效的混凝土碎片,分析了不同侵彻角(0°,60°)下锥形弹侵彻混凝土薄板的变形过程,得到了薄板的压力分布以及失效混凝土碎片的飞散角度,并与实验进行对比。结果表明,数值模拟方法是合理的,为进一步研究脆性材料的力学性能奠定了技术基础。

     

  • 图  刚性弹的运动模型

    Figure  1.  Motion model of a rigid projectile

    图  混凝土薄板失效区域划分

    Figure  2.  Failure area division of concrete target

    图  TCK-HJC本构模型计算流程图

    Figure  3.  Computation flow chart of TCK-HJC model

    图  锥形弹侵彻混凝土薄板的数值模型

    Figure  4.  Numerical model of conical projectile penetrating concrete slab

    图  锥形弹正侵彻混凝土薄板过程

    Figure  5.  Process diagram of conical projectile penetrating concrete slab

    图  数值模拟与力学模型的对比

    Figure  6.  Comparison between numerical simulation and mechanical model

    图  混凝土薄板贯穿孔洞的实验和数值模拟结果对比

    Figure  7.  Comparison of experimental results and numerical simulation of hole penetrations in concrete sheet

    图  正侵彻过程中混凝土薄板表面压力分布

    Figure  8.  Pressure distribution of concrete during positive penetration

    图  锥形弹斜侵彻混凝土薄板过程图

    Figure  9.  Process diagram of conical projectile obliquely penetrating concrete slab

    图  10  斜侵彻过程中混凝土薄板表面压力分布

    Figure  10.  Surface pressure distribution of concrete during oblique penetration

    图  11  失效混凝土碎片的飞散情况对比

    Figure  11.  SPH simulation results after conical projectile penetrating concrete slab

    表  1  混凝土的状态方程和本构方程参数

    Table  1.   Parameters of equation-of-state equation and constitutive equation of concrete

    G/GPa $ \rho $/(kg·m–3) $A$ $B $ $ N $ $ {\dot \varepsilon _0} $/s–1 $ C $ $ {f'_{\rm{c}}} $/MPa $ {S_{\max }} $
    14.8 2450 0.79 1.6 0.61 1.0 0.007 48 7.0
    pl/MPa pc/MPa $ {\varepsilon _{\rm{f}}}$ $ {\mu _{\rm{c}}}$ $ {D_1} $ $ {D_2} $ $ {\mu _{{1}}} $ T/MPa K1/GPa
    800 16.0 0.01 0.001 0.04 1.0 0.1 5 85
    K2/GPa K3/GPa $v $ $\;\beta $ K/(1026 m–3) m $ {K_{{\rm{IC}}}}$/(MPa·m1/2)
    –171 208 0.27 0.5 1.1452 6 2.758
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  • 收稿日期:  2018-09-14
  • 修回日期:  2018-09-24

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