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通过墙体的变形来耗散爆炸能量,可以有效地减轻爆炸冲击波对目标的破坏作用。采用一维应力波理论分析比较钢板夹泡沫铝、钢板夹聚氨脂和钢板夹混凝土三种防爆隔墙的减爆吸能效应,并运用ANSYS/LS-DYNA有限元程序对三种墙体在爆炸冲击波作用下的减爆吸能效应进行数值模拟。研究结果表明:钢板夹泡沫铝的防护效应最好,钢板夹混凝土次之,钢板夹聚氨酯最差。防护效应随着测点到防爆隔墙距离的增加而增大。防爆隔墙的减爆性能不仅与防爆隔墙的变形程度有关,还与防爆隔墙的自身强度有关。
Through the deformation of the wall to dissipate the explosive energy, it can effectively reduce the damaging effect of the blast shock wave on the target. The one-dimensional stress wave theory was used to analyze the effect of explosion-proof and energy-absorption of three kinds of explosion-proof partition walls made of steel-plate aluminum foam, steel plate clip polyurethane and steel plate clip concrete. ANSYS / LS-DYNA finite element program Numerical Simulation of Explosion-Explosion and Energy Absorption under Blast Shock Wave. The results show that the protective effect of aluminum foam is the best, the steel plate is the second one, and the polyurethane is the worst. The protective effect increases with the distance from the measuring point to the explosion-proof partition wall. Explosion-proof wall explosion performance not only with the explosion-proof wall deformation degree, but also with the strength of explosion-proof wall itself.