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Crashworthiness and optimization design of quadruple-cell Aluminum/ CFRP hybrid tubes under transverse bending

机译：四格铝/ CFRP混合管横向弯曲的耐撞性及优化设计

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摘要

This paper aims to investigate the bending collapse and crashworthiness of the quadruple-cell Al/CFRP (aluminum/carbon fiber reinforced plastic) hybrid tubes under quasi-static and dynamic loading. Three-point bending tests were first conducted for pure Al tubes and Al/CFRP hybrid tubes with different wrapping angles. Experimental results showed that the enhancement effect of CFRP wrapping on energy absorption efficiency of hybrid structures was affected by several factors. Numerical analyses were then carried out by ABAQUS/Explicit, and good agreements were achieved between the simulation and experimental results. The validated numerical model was further employed to investigate the effects of the partial wrapping, wrapping angle and ply thickness on the crashworthiness of Al/CFRP hybrid tubes. Results showed that the increase of wrapping angle and ply thickness could enhance the bending resistance and delay or avoid the fracture of CFRP in the bottom flange. The Al/CFRP tube with appropriate partial wrapping could achieve 7.9% higher specific energy absorption (SEA) than the entirely wrapped counterpart. In addition, the sequential response surface method (SRSM) was adopted to optimize the structural parameters and to further improve the crashworthiness of the hybrid tubes. The SEA of the Al/CFRP tube was increased by up to 30.3% by the RSM optimization.
机译：本文旨在研究准静态和动态载荷下四孔Al / CFRP（铝/碳纤维增强塑料）混合管的弯曲塌陷和耐撞性。首先对具有不同包角的纯铝管和Al / CFRP混合管进行了三点弯曲测试。实验结果表明，CFRP包裹对杂化结构能量吸收效率的增强作用受到多种因素的影响。然后，通过ABAQUS / Explicit进行了数值分析，并且在仿真和实验结果之间取得了良好的一致性。经过验证的数值模型被进一步用于研究部分包裹，包裹角度和层厚度对Al / CFRP混合管耐撞性的影响。结果表明，包角和帘布层厚度的增加可以提高抗弯性，延缓或避免CFRP在底部法兰上的断裂。与完全包裹的铝/ CFRP管相比，适当包裹的铝/ CFRP管的比能吸收（SEA）高7.9％。另外，采用顺序响应面法（SRSM）优化结构参数，进一步提高了混合管的耐撞性。通过RSM优化，Al / CFRP管的SEA增加了高达30.3％。

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  • 来源
    《Composite Structures》 |2020年第3期|111753.1-111753.13|共13页
  • 作者

  • 作者单位

    Huazhong Univ Sci & Technol Dept Mech Wuhan 430074 Hubei Peoples R China;

    Huazhong Univ Sci & Technol Dept Mech Wuhan 430074 Hubei Peoples R China|Hubei Key Lab Engn Struct Anal & Safety Assessmen Luoyu Rd 1037 Wuhan 430074 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

    Bending collapse; Aluminum/CFRP tubes; Quadruple-cell; Crashworthiness; Optimization design;

    机译：弯曲塌陷;铝/ CFRP管;四单元耐撞性优化设计;

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