Experimental and numerical study on the penetration performance of nanocrystalline copper shaped charge jet
  • 【摘要】

    The penetration performance of nanocrystalline as well as coarse-grained copper shaped charge jets was studied by experiments under the offset distance from twice to four times diameter of the shaped ... 展开>>The penetration performance of nanocrystalline as well as coarse-grained copper shaped charge jets was studied by experiments under the offset distance from twice to four times diameter of the shaped charges. Dynamic mechanical property of copper specimen with different average grain size at high strain rates from 1700 to 6800 s -1 was tested by Φ14.5mm split Hopkinson pressure bar(SHPB) and the Johnson-cook constitutive parameters were obtained. Penetration process of the shaped charge jets on the targets was calculated by LS-Dyna finite element program to analyze the penetration mechanism. The results show that the penetration performance of the NC copper shaped charge jets are superior to that of the coarse-grained copper shaped charge jets by 6.7-11.7 percent due to the super plasticity of the jets. 收起<<

  • 【作者】

    Rui Yang  Nan Zhou  Zhenyong Xu  Jinxiang Wang 

  • 【作者单位】

    Shandong

  • 【会议名称】

    第十届全国冲击动力学讨论会

  • 【会议时间】

    2011-07-01

  • 【会议地点】

    太原

  • 【主办单位】

    中国力学学会   北京理工大学

  • 【语种】

    chi

  • 【关键词】

    Nanocrystalline copper  SHPB  Shaped charge jet  Penetration  Numerical simulation