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Experimental and numerical research on the low velocity impact behavior of hybrid corrugated core sandwich structures

机译：混合瓦楞芯夹心结构低速冲击行为的实验与数值研究

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摘要

Corrugated core sandwich structures are fabricated with carbon fiber reinforced polymer (CFRP) face sheets and aluminum alloy cores. This lightweight design concept enables sandwich structures to maximize the specific bending stiffness/strength and improve the energy absorption capability. The low velocity impact behavior of such structures is investigated by experimentally and numerically. A range of low velocity impact tests are conducted to study the impact resistance, considering the effects of impact energy, core thickness and impact site on the impact load, absorbed energy and failure modes. A user subroutine VUMAT is developed to model the composite face sheet behavior, in which a progressive damage model based on the Hashin failure criteria and Yeh delamination failure criteria is implemented in ABAQUS/Explicit. There is a generally good agreement between the experimental and predicted results in terms of impact force, absorbed energy, and failure modes of sandwich structures. These studies reveal that fiber damage, matrix damage and delamination of face sheets as well as buckling of core members occur under varied impact energies. The results provide insight into the low velocity impact behavior of such structures, and the knowledge of failure mechanisms could be useful for the development of novel lightweight multifunctional structures. (C) 2016 Elsevier Ltd. All rights reserved.
机译：瓦楞芯夹层结构由碳纤维增强聚合物（CFRP）面板和铝合金芯制成。这种轻巧的设计理念使三明治结构能够最大程度地提高比弯曲刚度/强度，并提高能量吸收能力。通过实验和数值研究了这种结构的低速冲击行为。进行了一系列低速冲击试验，以研究冲击强度，其中考虑了冲击能量，型芯厚度和冲击部位对冲击载荷，吸收能和破坏模式的影响。开发了用户子例程VUMAT来对复合面板的行为进行建模，其中在ABAQUS / Explicit中实现了基于Hashin破坏准则和Yeh分层破坏准则的渐进破坏模型。就夹层结构的冲击力，吸收的能量和破坏模式而言，实验结果和预测结果之间通常有很好的一致性。这些研究表明，在不同的冲击能量下，会发生纤维损伤，基体损伤和面板分层以及芯件弯曲。结果提供了对此类结构的低速冲击行为的洞察力，并且失效机理的知识可能对开发新型轻质多功能结构很有用。 （C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Composite Structures》 |2016年第12期|30-43|共14页
  • 作者

    He Wentao; Liu Jingxi; Tao Bo; Xie De; Liu Jiayi; Zhang Min;

  • 作者单位

    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|Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, 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;

    Huazhong Univ Sci & Technol, State Key Lab Digital Mfg Equipment & Technol, 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;

    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;

  • 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

    Corrugated core; Sandwich structure; Low velocity impact; Impact behavior; Energy absorption;

    机译：瓦楞芯;三明治结构;低速冲击;冲击行为;能量吸收;

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