This paper presents new insights into the influence of explosive charge backing on the impulse transfer and transient response characteristics of plates subjected to close-proximity air blast loading. The results of the combine experimental and computational studies show the critical influence of charge backing, which caused between a 3-5 times increase in the impulse transfer when the charge was metal-backed. The permanent deflections from the metal-backed detonations were larger than for air, but not to the same degree as the impulse increase. These findings demonstrate the important influence of charge backing, in close proximity detonations, which greatly exceeded anything previously measured. These valuable insights will assist blast protection engineers considering the effects of explosions in situations when the charge backing is something other than air, which is a frequent occurrence in explosion scenarios.

本文提供了新的见解，以了解爆炸性装药背板对承受近风冲击载荷的板的脉冲传递和瞬态响应特性的影响。实验和计算研究相结合的结果显示了电荷支持的关键影响，当电荷被金属支持时，这会导致脉冲传输增加3-5倍。金属支撑的爆炸的永久挠度大于空气，但与脉冲增加的程度不同。这些发现证明了在近距离爆轰中电荷支持的重要影响，这大大超过了先前测量的结果。