离散多层绕带容器在爆炸载荷作用下动力响应的数值模拟研究

运用LS-DYNA3D对不同缠绕角度的离散多层绕带容器在内部中心爆炸载荷作用下的动力响应进行了数值模拟。模拟结果与实验结果、理论分析以及单层圆柱高压容器的动力响应作了比较。研究结果表明，内部中心爆炸载荷作用下，容器绕带层应力分布比较均匀；相同炸药当量条件下，缠绕角度越大，最外层绕带中心的最终位移越大。结果还表明，离散多层绕带容器具有只漏不爆的良好抗爆性能，是单层结构容器不具备的。计算结果可为构建爆炸容器的工程设计标准提供参考。

Dynamic responses of discrete multilayered wound ribbon vessels subjected to blast loading

The dynamic responses of discrete multilayered wound ribbon vessels(DMWRV) subjected to internal explosion loading were numerically simulated by using LS-DYNA3D. Several kinds of winding angles were considered. The simulated results were compared with the experimental results, theoretical analysis and numerical results of a monobloc thick-walled high-pressure vessel. Compared results indicate the following: (1) the stress distribution in the ribbon layers of DMWRV is homogeneous; (2) the bigger the winding angle is, the bigger the final displacement of the outermost layer is subjected to the same TNT; (3) the DMWRV has excellent property of leak before burst at worst, which is impossible for the monobloc thick-walled high pressure vessel. Simulated results are helpful to establish the engineering design criteria of the explosion containment vessels.