钢板-聚氨酯复合墙体的减爆吸能效应分析

Explosion mitigation and energy absorption effects analysis of the steel-polyurethane composite wall

墙体自身变形吸收和耗散爆炸能量，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-聚氨酯和钢板-混凝土复合墙体的减爆吸能效应，并运用ANSYS／LS-DYNA有限元程序对2种复合墙体在爆炸冲击波作用下的减爆吸能性能进行数值模拟。研究结果表明：钢板．聚氨酯复合墙体比钢板．混凝土复合墙体具有更好的减爆吸能效果，主要原因是聚氨酯材料允许墙体产生明显的大变形，耗散了大部分爆炸能量。

The wall can effectively reduce the destruction of the target under explosion shock wave through its deformation energy absorption and explosion mitigation. The research analyzes the energy absorption effects of the steel-polyurethane and steel-concrete composite walls with the one dimension stress wave theory and numerical simulation through ANSYS/LS-DYNA software. The results show that the energy absorption performance of the steel- polyurethane composite wall is better than that of the steel-concrete composite wall as the larger deformation of the steel-polyurethane composite wall can absorb a most part of the explosion energy.