Attenuation properties of blast wave through porous layer
Attenuation properties of blast wave through porous layer
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DOI：
10.1007/978-3-540-85168-4_10
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
K. Kitagawa;S. Yamashita;K. Takayama;M. Yasuhara
中科院分区：
文献类型：
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作者：
K. Kitagawa;S. Yamashita;K. Takayama;M. Yasuhara
爆炸冲击波在多孔介质中的传播与衰减是安全评价和爆炸危险预防的重要研究课题之一。本研究是复杂介质中冲击波系列研究的一部分。对冲击波穿过高孔隙率（≤ 98%）、低密度（≤ 28 kg/m3）的聚氨酯泡沫和低孔隙率（≤ 45%）、高密度（≤ 1500 kg/m3）的砂层进行了试验。泡沫塑料和砂层中的超压峰值比空气中下降得快，这是由于爆炸波与三维孔隙分布相互作用而退化为压缩波。目前复杂介质中引起的压力衰减在空气中峰值超压值的10%至40%之间。
The propagation and attenuation of blast waves through porous layers is one of the important research topics related to safety assessment and prevention from explosion hazards. This study is a part of series of research on shock in complex media. Blast waves passing through porous layer such as polyurethane foam with high-porosities(≈ 98%) and low densities(≈ 28kg/m3) ; and sand layer having low-porosities(≈ 45%) and high densities (≈1500kg/m3) are tested. Peak overpressures in polyurethane foam and sand layer decrease quickly than that in air, as the blast wave is degenerated into compression waves due to its interaction with three-dimensional porosity distribution. Pressure attenuation caused in present complex media are in between 10 to 40% of the peak overpressure value in air.