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Study on the torsion behavior of 3-D braided composite shafts

机译：3-D编织复合轴的扭转性能研究

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摘要

The structural parameters of three-dimensional (3-D) braided composites have important influence on their mechanical properties. The torsional properties of the 3-D braided composite shafts with braiding angles of 25 degrees, 35 degrees and 45 degrees were tested by MTS809. Based on the micro-structure of 3-D braided composite material, unit cell model was established, and the failure process of 3-D braided composite transmission shaft under torsion was studied by finite element method. The results show that the shear resistance of the specimens increases with the increase of braiding angle, and the specimens still have a certain bearing capacity after unloading. The simulation results show that the damage of the specimens first appears at the fiber/matrix interface. With the increase of load, the damage of the matrix expands and connects between the interfaces, and finally leads to the failure of the specimens. The failure of small braiding angle specimens is mainly caused by the accumulation of matrix damage, while the fiber damage of large braiding angle specimens increases, and the deformation is more consistent with the experimental results.
机译：三维（3-D）编织复合材料的结构参数对其机械性能具有重要影响。 MTS809测试了编织角度为25度，35度和45度的3-D编织复合轴的扭转性能。基于3-D编织复合材料的微观结构，建立了晶胞模型，并通过有限元方法研究了3-D编织复合传动轴在扭转作用下的破坏过程。结果表明，试样的抗剪强度随编织角的增加而增大，卸荷后仍具有一定的承载力。仿真结果表明，样品的损伤首先出现在纤维/基质界面。随着载荷的增加，基体的破坏扩大并在界面之间连接，最终导致试样的破坏。小编织角试样的破坏主要是由于基体损伤的积累，而大编织角试样的纤维损伤增加，其变形与实验结果更加吻合。

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  • 来源
    《Composite Structures》 |2019年第12期|111384.1-111384.9|共9页
  • 作者

    Hao Wenfeng; Huang Zhen; Zhang Lu; Zhao Guoqi; Luo Ying;

  • 作者单位

    Jiangsu Univ Fac Civil Engn & Mech Inst Struct Hlth Management Zhenjiang 212013 Jiangsu Peoples R China|Jiangsu Univ Natl Ctr Int Res Struct Hlth Management Crit Comp Zhenjiang 212013 Jiangsu Peoples R China|Beijing Inst Technol Inst Adv Struct Technol Beijing 100081 Peoples R China;

    Jiangsu Univ Fac Civil Engn & Mech Inst Struct Hlth Management Zhenjiang 212013 Jiangsu Peoples R China|Jiangsu Univ Natl Ctr Int Res Struct Hlth Management Crit Comp Zhenjiang 212013 Jiangsu 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

    3-D braided composite shafts; Torsion behavior; Braiding angle; Unit cell; Damage;

    机译：3-D编织复合轴;扭转行为;编织角晶胞;损伤;

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