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三维编织管件复合材料压缩与弯曲性能

何红梅 高兴忠 项赫 苏智鹏 韩天聪 杨雨琪 姚湘江

何红梅, 高兴忠, 项赫, 等. 三维编织管件复合材料压缩与弯曲性能[J]. 复合材料学报, 2024, 43(0): 1-8.
引用本文: 何红梅, 高兴忠, 项赫, 等. 三维编织管件复合材料压缩与弯曲性能[J]. 复合材料学报, 2024, 43(0): 1-8.
HE Hongmei, GAO Xingzhong, XIANG He, et al. Compression and bending properties of 3D braided tubular composites[J]. Acta Materiae Compositae Sinica.
Citation: HE Hongmei, GAO Xingzhong, XIANG He, et al. Compression and bending properties of 3D braided tubular composites[J]. Acta Materiae Compositae Sinica.

三维编织管件复合材料压缩与弯曲性能

基金项目: 国家自然科学基金委员会青年项目(12302483);高性能纤维及制品教育部重点实验室(B类)(201990406);先进纺织复合材料教育部重点实验室开放基金(MATC-2021-004);陕西省留学人员科技活动择优资助项目(2023013);西安市科学技术协会青年人才托举计划(959202413058)
详细信息
    通讯作者:

    高兴忠,博士,副教授,研究方向为纺织复合材料 E-mail:gaoxz@xpu.edu.cn

  • 中图分类号: TB332

Compression and bending properties of 3D braided tubular composites

Funds: National Natural Science Foundation of China Youth Project (12302483); Key Laboratory of High Performance Fiber & Products (201990406); Open Project Program of Ministry of Education Key Laboratory for Advanced Textile Composite Materials (Tiangong University) (MATC-2021-004); Shaanxi Province Scholarship Program for Science and Technology Activities of Overseas Students (2023013); Youth Talent Support Program of Xi'an Association for Science and Technology (959202413058)
  • 摘要: 三维编织复合材料管件在承力结构件中有广泛应用。纤维性能对其承载时变形和失效演化的影响机制是亟需解决的问题。本文探究了高模高强和高韧性两种纤维增强管件复合材料的失效行为,通过轴向压缩和三点弯曲试验,借助DIC技术,研究了不同纤维管件编织复合材料的力学性能。结果发现:高强高模管件更早发生变形分布变化,变形主要集中在发生剪切滑移的区域。高韧性管件较晚出现变形分布变化,变形逐渐集中到中间“鼓包”区域;高强高模管件的压缩和弯曲强度比高韧性管件分别高56%和50%;压缩和弯曲能量吸收比高韧性管件分别高20.9%和68%。这说明纤维的高强高模可以弥补其韧性差而导致吸能较少的弱点。本研究可为三维编织管件复合材料的设计提供理论指导。

     

  • 图  1  圆管复合材料制备过程:(a)预成型体编织示意图;(b)四步法圆形编织;(c)固化工艺示意图

    Figure  1.  Preparation process of tubular composites: (a) Schematic diagram of preform braiding; (b) Four-step circular braiding; (c) Diagram of curing process

    图  2  压缩测试样品:(a) CF圆管侧面图;(b) CF圆管正面图;(c) UHMWPE圆管侧面图;(d) UHMWPE圆管正面图

    Figure  2.  Diagrams of compression test samples: (a) Side view of CF tubular composite; (b) Front view of CF tubular composite; (c) Side view of UHMWPE tubular composite; (d) Front view of UHMWPE tubular composite

    图  3  管件复合材料弯曲测试试样:(a) CF;(b) UHMWPE

    Figure  3.  Flexural test specimens of tubular composite: (a) CF; (b) UHMWPE

    图  4  圆管复合材料压缩应力-应变曲线:(a)碳纤维;(b) UHMWPE纤维

    Figure  4.  Compressive stress-strain curves of tubular composite: (a) CF; (b) UHMWPE

    图  5  管件复合材料压缩后形貌破坏图:(a) CF;(b) UHMWPE

    Figure  5.  Morphological damage diagrams of tubular composites after compression: (a) CF; (b) UHMWPE

    图  6  复合材料管件压缩变形演化过程图:(a) CF;(b) UHMWPE

    Figure  6.  Plot of the compression deformation evolution process of tubular composite: (a) CF; (b) UHMWPE

    图  7  复合材料管件压缩应力-应变曲线演化过程图:(a) CF;(b) UHMWPE

    Figure  7.  Plot of the evolution of compressive stress-strain curves of composite pipe fittings: (a) CF; (b) UHMWPE

    图  8  复合材料管件压缩过程主要力学性质对比:(a)强度和模量;(b)能量吸收

    Figure  8.  Comparison of the main mechanical properties of tubular composite during compression: (a) Strength and modulus; (b) Energy absorption

    图  9  管件复合材料弯曲载荷-位移曲线

    Figure  9.  Bending load-displacement curves of tubular composite

    图  10  圆管复合材料弯曲测试过程高速摄影图:(a) CF;(b) UHMWPE

    Figure  10.  High-speed photograms of the bending test process of tubular composites: (a) CF; (b) UHMWPE

    图  11  三维编织管件复合材料弯曲试验表面形貌图:(a) CF;(b) UHMWPE

    Figure  11.  Surface topography of 3 D braided tubing composites in bending test: (a) CF; (b) UHMWPE

    图  12  管件复合材料能量吸收和弯曲对比

    Figure  12.  Comparison of energy absorption and bending of tubular composite

    表  1  碳纤维力学性能参数

    Table  1.   Mechanical property parameters of carbon fiber

    Name Norm
    Density /(g·cm−3) 1.8
    Tensile strength /GPa
    Elongation at break /%
    5.31
    2.18
    Tensile modulus of elasticity /GPa 240
    下载: 导出CSV

    表  2  UHMWPE纤维力学性能参数

    Table  2.   Mechanical property parameters of UHMWPE fiber

    NameNorm
    Density /(g·cm-3)0.97
    Breaking strength /GPa
    Elongation at break /%
    3.0
    3.83
    Modulus of rupture /GPa130
    下载: 导出CSV

    表  3  圆管复合材料试样参数

    Table  3.   Parameters of tubular composite specimen

    Sample nameBraiding angle /(°)Fiber volume fraction /%
    Carbon fiber35.836.5
    UHMWPE35.734.8
    下载: 导出CSV
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  • 收稿日期:  2024-08-21
  • 修回日期:  2024-09-24
  • 录用日期:  2024-10-02
  • 网络出版日期:  2024-10-24

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