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Torsion of carbon fiber composite pyramidal core sandwich plates

机译：碳纤维复合锥芯夹芯板的扭转

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摘要

A combined theoretical, experimental and numerical investigation of carbon fiber composite pyramidal core sandwich plates subjected to torsion loading is conducted. Pyramidal core sandwich plates are made from carbon fiber composite material by a hot compression molding method. Based on the Classical Laminate Plate Theory and Shear Deformation Theory, the equivalent mechanical properties of laminated face-sheet are obtained; based on a homogenization concept combined with a mechanical of materials approach, the equivalent in-plane and out-of-plane shear moduli of pyramidal core are obtained. A torsion solution is derived with Prandtl stress function and can be used in the sandwich plate with ortho-tropic face-sheets and orthotropic core. The influences of material properties and geometrical parameters on the equivalent torsional stiffness are explored. In order to verify the accuracy of the analytical torsion solution, experimental tests of sandwich plate samples with different face-sheet thicknesses are conducted and two types of finite element models are developed. Good agreements among analytical predictions, finite element simulations and experimental evaluations are achieved, which prove the validity of the present derivation and simulation. The proposed method could also be applied in design applications and optimization of the pyramidal core sandwich structures.
机译：进行了碳纤维复合材料金字塔形芯夹芯板在扭转载荷作用下的理论，实验和数值研究。金字塔形夹芯板由碳纤维复合材料通过热压成型法制成。基于经典的层压板理论和剪切变形理论，获得了层压面板的等效力学性能。基于均质化概念并结合材料力学方法，获得了金字塔形芯的等效面内和面外剪切模量。扭转解决方案具有Prandtl应力函数，可用于具有正交各向异性面板和正交异性芯的夹心板中。探索了材料特性和几何参数对等效扭转刚度的影响。为了验证分析扭转解决方案的准确性，对具有不同面板厚度的夹心板样品进行了实验测试，并开发了两种类型的有限元模型。在分析预测，有限元模拟和实验评估之间取得了良好的一致性，证明了本推导和模拟的有效性。所提出的方法还可以应用于锥芯夹心结构的设计应用和优化。

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  • 来源
    《Composite Structures》 |2011年第9期|p.2358-2367|共10页
  • 作者

    Ming Li; Linzhi Wu; Li Ma; Jian Xiong; Zhengxi Guan;

  • 作者单位

    No. 201 Faculty, Xi'an Research Institute of High-tech, Xi'an 710025, PR China Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China;

    Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China;

    Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China;

    Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, PR China;

    No. 201 Faculty, Xi'an Research Institute of High-tech, Xi'an 710025, PR 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; pyramidal core; composite; torsion;

    机译：三明治;金字塔形核心综合;扭力;

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