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首页> 外文会议>ASME international conference on ocean, offshore and arctic engineering >PERFORMANCE EVALUATION OF AIR-BACKED METALLIC CIRCULAR PLATES SUBJECTED TO CLOSE-IN UNDERWATER EXPLOSION
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PERFORMANCE EVALUATION OF AIR-BACKED METALLIC CIRCULAR PLATES SUBJECTED TO CLOSE-IN UNDERWATER EXPLOSION

机译：近水下爆炸闭合水下爆炸的空气背衬金属圆形板的性能评价

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The topic on performance evaluation of air-backed metallic structures subjected to close-in underwater explosion is of interest to protecting construction designers. The focus of performance includes not only the deformation/failure modes but also the energy absorption capability. This paper presented a blast experiment to investigate the blast resistance of circular solid plate. The deformation and failure modes were classified. The energy absorption of the blast-loaded plate was quantified by the response of another plate, which was arranged below the target. Particular attention was paid to discussing the effects of the charge mass and stand-off distance (SoD) on the blast performance. Results showed that the target plates appeared to experience petalling failure in case of contact tests and large inelastic deformation in case of noncontact. The shock waves induced by the blast explosion and the fragments teared from the target plates caused a capping or some permanent deformation on rear plates. Damages and deformations of target and rear plates were strongly correlated with the explosion intensity. As the increase of stand-off distance, the failure mode of target plates transitioned from petalling to large inelastic deformation. Experimental results presented in this paper provided valuable guidance for the following research on sandwich structures.
机译：对进行了近距离的水下爆炸空气支持金属结构的绩效评价主题是感兴趣的保护建筑设计师。的性能的焦点不仅包括变形/故障模式而且，能量吸收能力。本文提出一个爆炸实验来调查圆形实心板的稻瘟病抗性。变形和破坏模式进行了分类。鼓风加载板的能量吸收物通过另一个板，其布置在低于目标的响应进行定量。特别注意的是，以讨论有关爆炸性能的电荷物质和防区外距离（SOD）的影响。结果表明，靶板似乎经验petalling失败的接触测试和大型非弹性变形情况下的非接触情况。通过鼓风爆炸和从所述目标板撕开所述片段所引起的冲击波引起的覆盖或对后板某些永久变形。损害和靶的变形板和后板与爆炸强度显着相关。作为投射距离的增加，目标板的故障模式从petalling到大型非弹性变形转变。本文介绍的实验结果对夹层结构的后续研究提供了宝贵的指导意见。

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