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首页> 外文会议>Boundaries of Rock Mechanics: Recent Advances and Challenges for the 21st Century >Numerical simulation on penetrating rock by linear shaped charge jet with uneven thickness cover
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Numerical simulation on penetrating rock by linear shaped charge jet with uneven thickness cover

机译：厚度不均匀的线状射流侵彻岩石的数值模拟。

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This paper uses ANSYS/LS-DYNA-2D explicit finite element analysis (FEA) code to simulate the full rock penetrating process of linear shaped charge jet with uneven thickness cover. The results show that linear shaped charge can control the direction of crannies in the rock and promote the occurrence of the single primary crack. It is obvious that different actions are impacted by different linear shaped charge jet with different wall thicknesses. For the linear shaped charge and the rock in this paper, the longest primary crack is obtained through taking the uneven thickness cover whose variation rate is 1.56%. Consequently, varying rate of linear shaped charge cover does have great influence on the formation of cracks and the development of cracks can be controlled expediently by choosing appropriate varying rate of cover.
机译：本文使用ANSYS / LS-DYNA-2D显式有限元分析（FEA）代码来模拟具有不均匀厚度覆盖层的线性异型电荷射流的整个岩石穿透过程。结果表明，线性装药可以控制岩石中缝隙的方向，并促进单个初生裂纹的发生。显然，不同的动作受到具有不同壁厚的不同线性电荷射流的影响。对于本文中的线性装药和岩石，通过采用厚度变化率为1.56％的不均匀厚度覆盖层可获得最长的一次裂纹。因此，线性电荷装药速率的变化确实对裂纹的形成有很大的影响，并且通过选择适当的变化速率可以方便地控制裂纹的发展。

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