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Experimental investigation on the performance of PVC foam core sandwich panels under air blast loading

机译：爆炸载荷作用下PVC泡沫芯夹芯板性能的实验研究

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摘要

The performance of sandwich panels with metallic face-sheets and polyvinyl chloride (PVC) foam ungraded/graded cores under air blast loading was investigated experimentally. In present paper, the performance of interest included the permanent deformation, failure modes and the associated mechanisms underlying the overall response. The majority of the paper was concentrated on the effects of geometric parameters and core gradation on the blast performance of panels. Experimental results showed that regardless of the panel configuration considered here, the panels exhibited a localized dishing deformation of front face and a global dome deformation of back face. The way to achieve a more effective design against air blast is to increase the thickness of the face sheet towards the blast rather than the other sheet. The panel system with a low-density (large thickness) core appeared to be favorable for the mitigation of back face deformation and core cracking failure. Effect of core gradation indicated that placing the low density material at the third core layer and the high density material at the second core layer, thus reducing the momentum transmitted to back face and increasing the crushing deformation of graded core, helped enhance the blast resistance of panel. Furthermore, the comparisons of blast performance between ungraded sandwich panel and graded panels were made. It turned out that overall graded panels did not always outperform the ungraded panel. An optimal core gradation would bring benefits for blast resistance in terms of the face sheet deformation and core cracking failure, but also was required to face the risk of delamination failure.
机译：实验研究了带有金属面板和聚氯乙烯（PVC）泡沫未分级/分级芯的夹芯板在鼓风载荷下的性能。在本文中，感兴趣的性能包括永久变形，破坏模式以及整体响应所依据的相关机制。大部分论文集中于几何参数和岩心等级对面板爆炸性能的影响。实验结果表明，无论此处考虑的面板配置如何，面板都表现出正面的局部凹陷变形和背面的整体圆顶变形。实现更有效的设计以抵御鼓风的方法是增加朝向鼓风的面板的厚度，而不是其他面板的厚度。具有低密度（大厚度）型芯的面板系统似乎有利于减轻背面变形和型芯开裂失败。岩心渐变效果表明，将低密度材料放置在第三岩心层上并将高密度材料放置在第二岩心层上，从而减少了传递到背面的动量并增加了梯度岩心的破碎变形，有助于增强岩心的抗爆炸性。面板。此外，比较了未分级夹心板和分级板之间的爆炸性能。事实证明，整体评分小组并不总是优于未评分小组。最佳的岩心等级将在面板变形和岩心开裂破坏方面为抗爆炸性带来好处，但是还需要面对分层破坏的风险。

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  • 来源
    《Composite Structures》 |2019年第10期|111081.1-111081.14|共14页
  • 作者

    Zhou Tianyu; Zhang Pan; Xiao Wei; Liu Jun; Cheng Yuansheng;

  • 作者单位

    Huazhong Univ Sci & Technol Sch Naval Architecture & Ocean Engn Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci & Technol Sch Naval Architecture & Ocean Engn Wuhan 430074 Hubei Peoples R China|Collaborat Innovat Ctr Adv Ship & Deep Sea Explor Shanghai 200240 Peoples R China|Hubei Key Lab Naval Architecture & Ocean Engn Hyd Wuhan 430074 Hubei Peoples R China;

    China Ship Dev & Design Ctr Wuhan Hubei Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sandwich structure; Graded foam core; Blast loading; Failure mode;

    机译：三明治结构;梯度泡沫芯;爆炸加载;故障模式;

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