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Out-of-plane compression of a novel hybrid corrugated core sandwich panel

机译：新型混合式瓦楞芯夹芯板的外平面压缩

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摘要

Lightweight sandwich panels with fluid-through cellular cores are promising for applications requiring simultaneous load-bearing and heat dissipation such as the combustion chamber of scramjet. While existing core topologies have exhibited good designability for specific thermal or mechanical requirements, the increasing demand for multifunctional attributes usually points to different core topology designs. Finding a single core topology that possesses excellent mechanical and thermal properties simultaneously remains challenging. To address the issue, the concept of a hybrid core (termed herein as the N core) that combines the conventional corrugated core with the web core was proposed to mitigate confliction between thermal and mechanical designs. Out-of-plane compressive characteristics of the hybrid cored sandwich panel was investigated theoretically, numerically and experimentally. An elastic-plastic analytical model was developed to predict the out-ofplane compressive behavior, with connection strength between facesheets and core as well as non-uniform strut thickness accounted for. For validation, test sample was fabricated using 3D-printing technology and tested under quasi-static out-of-plane compression. The validated model was then employed to exploit optimal configuration of the N core and maximum load capacity of the panel at minimal weight. It was demonstrated that, due to non-uniform strut thickness, the hybrid structure exhibited stepwise deformation, i.e., initial, subsequent and ultimate failures. Under the constraint of equal mass, the load capacity of either the hybrid or corrugated core is superior to the web core, while both the hybrid and web cores outperform the corrugated core in terms of active cooling capacity. For multifunctional applications, the proposed hybrid corrugated core possesses comprehensive thermal and mechanical advantages over conventional corrugated and web topologies.
机译：具有液体通过蜂窝芯的轻质夹层面板是需要同时承载和散热等应用的应用，例如Scramjet的燃烧室。虽然现有的核心拓扑结构表现出良好的可设计性，但对于特定的热或机械要求，越来越多的多功能属性的需求通常指向不同的核心拓扑设计。寻找具有优异机械和热性质的单一核心拓扑，同时保持具挑战性。为了解决问题，提出了将传统波纹芯与幅材核心结合的混合核心（在本文中称为N核心），以减轻热和机械设计之间的碰撞。理论上，在数值和实验上，研究了混合芯夹层板的平面外压缩特性。开发了弹性塑料分析模型来预测外出的压缩行为，面表和核心之间的连接强度以及非均匀的支柱厚度占。为了验证，使用3D印刷技术制造测试样品，并在准静态外压缩下测试。然后采用经过验证的模型来利用基板的N芯和最大负载能力的最佳配置，以最小的重量。据证明，由于不均匀的支柱厚度，混合结构表现出逐步变形，即初始，随后和最终的故障。在相等质量的约束下，混合芯或波纹芯的负载能力优于幅材芯，而杂交和腹板芯两者都在主动冷却能力方面优于波纹芯。对于多功能应用，所提出的杂交瓦楞芯具有优于传统波纹和幅材拓扑的综合热和机械优势。

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  • 来源
    《Composite Structures》 |2021年第9期|114222.1-114222.11|共11页
  • 作者

    Sun Shanyouming; Liu Dan; Sheng Yinglong; Feng Shangsheng; Zhu Hongbin; Lu Tian Jian;

  • 作者单位

    Xi An Jiao Tong Univ State Key Lab Strength & Vibrat Mech Struct Xian 710049 Peoples R China|Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China|Xi An Jiao Tong Univ Bioinspired Engn & Biomech Ctr BEBC Xian 710049 Peoples R China;

    Xian Aerosp Yuan Dongli Engn Co Ltd Xian 710100 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Strength & Vibrat Mech Struct Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Bioinspired Engn & Biomech Ctr BEBC Xian 710049 Peoples R China|Xi An Jiao Tong Univ Sch Life Sci & Technol Minist Educ Key Lab Biomed Informat Engn Xian 710049 Peoples R China;

    China Railway Rolling Stock Corp CRRC CRRC Ind Acad Co Ltd Beijing 100161 Peoples R China;

    Nanjing Univ Aeronaut & Astronaut State Key Lab Mech & Control Mech Struct Nanjing 210016 Peoples R China|Nanjing Univ Aeronaut & Astronaut MIIT Key Lab Multifunct Lightweight Mat & Struct Nanjing 210016 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

    Hybrid-cored sandwich panel; Thermo-mechanical design; Out-of-plane compression; Non-uniform strut thickness;

    机译：杂交砂皮板;热电机械设计;外平面压缩;不均匀的支柱厚度;

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