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Investigation on the shear behaviors of carbon fiber composite sandwich panels with the X-core

机译：X芯碳纤维复合夹芯板剪切行为的研究

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摘要

In-plane shear response of an all-composite X-core sandwich panel was investigated experimentally, numerically and analytically in this paper. The shear experiments of the X-core sandwich panels with three different relative densities were performed and the delamination on the joint and web was the dominant failure mode. Finite element analysis were conducted to further investigate the large deformation and progressive failure of the X-core sandwich panels under in-plane shear loading. The numerical models can correctly simulate the initiation and extension of the delamination and the predictions for the shear response were in good agreement with experiments. A theoretical model based on a modified Reddy zig-zag laminated beams theory and a spring model for the joint were employed to forecast the shear mechanical properties. The analytical results indicated the member shear deformation and joint stiffness had significant effects on the shear modulus and had a reasonable agreement with the experimental results.
机译：在本文中实验，在数值和分析上实验研究了全复合X芯夹心板的面内剪切响应。进行了具有三种不同相对密度的X芯夹层面板的剪切实验，并在关节和纤维网上的分层是主要的失效模式。进行有限元分析以进一步研究平面内剪切载荷下X芯夹心板的大变形和逐渐失效。数值模型可以正确模拟分层的启动和扩展，并且剪切反应的预测与实验吻合良好。基于改进的Reddy Zag层压梁理论的理论模型和关节的弹簧模型预测剪切力学性能。分析结果表明，成员剪切变形和关节刚度对剪切模量具有显着影响，并与实验结果进行了合理的协议。

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  • 来源
    《Marine Structures》 |2021年第5期|102897.1-102897.20|共20页
  • 作者

    Mei Jie; Ao Yaoliang; Jiang Weimin; Liu Jiayi; Zhou Zhengong; Huang Wei;

  • 作者单位

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

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

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

    Huazhong Univ Sci & Technol Sch Naval Architecture & Ocean Engn Wuhan 430074 Peoples R China|Hubei Key Lab Naval Architecture & Ocean Engn Hyd Wuhan 430074 Peoples R China|Collaborat Innovat Ctr Adv Ship & Deep Sea Explor Shanghai 200240 Peoples R China|Harbin Inst Technol Natl Key Lab Sci & Technol Adv Composites Special Harbin 150001 Peoples R China;

    Harbin Inst Technol Natl Key Lab Sci & Technol Adv Composites Special Harbin 150001 Peoples R China;

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

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Carbon fibers; Shear properties; Sandwich structures; Finite element analysis (FEA); Analytical modelling;

    机译：碳纤维;剪切性能;夹层结构;有限元分析（FEA）;分析建模;

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