防护墙对远场冲击波防护作用的数值模拟

基于任意拉格朗日流固耦合算法,运用有限元软件ANSYS/LS-DYNA研究了挡墙作用下爆炸冲击波的远场传播特性与衰减规律。计算模拟了不同情况的挡墙对冲击波对远场的作用和影响。计算结果表明,挡墙的防护作用较为明显,在一定范围内,挡墙越高、挡墙距爆源越近防护作用越明显。通过计算和分析知,科学、合理的设置挡墙的尺寸和位置对爆炸冲击波的远场防护具有重要的意义。

Numerical Simulation of Protective Effect of Far Field on Explosion Wave with Protective Wall

Based on Any-Lagrangian-Eulerian capability fluid-structure coupling algorithm, with the finite element software ANSYS/LS-DYNA, we studied the impact of the protective wall, and the propagation and attenuation law of explosion wave for far field. We calculated and simulated the impact and influence of the protective wall of explosion wave for far field in different conditions. The results show that protection of the wall is obvious, within a certain range： the higher of the protective wall and the closer to the explosion, the more obvious of the protective effect. Through calculation and analysis, to scientifically and reasonably set the size and the location of the protective wall is of vital importance to the protection of the far field ex- plosion wave.