In order to find out how the branch structure affected the characteristic of shockwave propagation,LS-DYNA software was used to compute,and simulate certain shockwave propagating through the branch tunnels with different angle,and the overpressure/momentum(ratio)bench mark to measure "plane wave" was proposed.The results show that overpressure(ratio)bench mark is well suited for describing anomaly distribution,and momentum(ratio)bench mark can provide better measure for shockwave damage.Along with increasing of the branch deflexion angle,the primary tunnel momentum increases and the branch tunnel momentum decreases,and plane shockwave recover distance also increase but will not exceed six times equivalent diameter.
参考文献
相似文献
引证文献
文章指标
PDF下载次数:
HTML阅读次数:
摘要点击次数:
引用次数:
引用本文
覃彬,张奇,向聪,等.数值模拟研究分叉巷道中冲击波传播规律[J].含能材料, 2008, 16(6):741-744. QIN Bin. Numerical simulation research on shockwave propagation characteristics inside branch tunnel[J]. Chinese Journal of Energetic Materials, 2008, 16(6):741-744.