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考虑纤维缠绕形态的复合材料结构拉伸承载行为

肖磊 胡海晓 曹东风 雷伟华 冀涛 李书欣

肖磊, 胡海晓, 曹东风, 等. 考虑纤维缠绕形态的复合材料结构拉伸承载行为[J]. 复合材料学报, 2023, 40(待排刊): 1-12
引用本文: 肖磊, 胡海晓, 曹东风, 等. 考虑纤维缠绕形态的复合材料结构拉伸承载行为[J]. 复合材料学报, 2023, 40(待排刊): 1-12
Lei XIAO, Haixiao HU, Dongfeng CAO, Weihua LEI, Tao JI, Shuxin LI. Tensile bearing behavior of composite structures considering filament wound morphology[J]. Acta Materiae Compositae Sinica.
Citation: Lei XIAO, Haixiao HU, Dongfeng CAO, Weihua LEI, Tao JI, Shuxin LI. Tensile bearing behavior of composite structures considering filament wound morphology[J]. Acta Materiae Compositae Sinica.

考虑纤维缠绕形态的复合材料结构拉伸承载行为

基金项目: 先进能源科学与技术广东省实验室佛山分中心(佛山仙湖实验室)开放基金 (XHT2020-002);中央高校基本科研业务费专项资金(2020Ⅲ028 GX,2021 III015 JC,WUT2021 IVA068)
详细信息
    通讯作者:

    胡海晓,博士,副教授,硕士生导师,研究方向为复合材料工艺与仿真方法  E-mail:yiming9008@126.com

    曹东风,博士,副教授,硕士生导师,研究方向为先进复合材料计算力学  E-mail: cao_dongf@whut.edu.cn

  • 中图分类号: TB330.1

Tensile bearing behavior of composite structures considering filament wound morphology

  • 摘要: 纤维缠绕复合材料的纤维束具有交叉起伏形态特征,该形态对复合材料结构的力学行为有显著的影响。本文采用数值仿真和实验手段研究了纤维缠绕复合材料平板结构的拉伸力学行为。实验方面,开展纤维缠绕复合材料平板的准静态拉伸实验,通过数字图像相关技术(DIC)监测其表面应变场的演化过程,研究交叉起伏特征对载荷-位移曲线和应变分布特征的影响;数值分析方面,构建包含纤维缠绕形态的介观有限元模型,基于3D Hashin失效准则开展渐进损伤过程模拟,并引入了复合材料的剪切非线性行为。选取层合板结构为参照组,同时开展实验和数值分析。实验结果表明:对于层合结构,缠绕结构的整体刚度更低,失效位移更大,失效载荷基本相同,且缠绕结构菱形特征单元中部纤维交叉起伏区域存在明显的应变集中现象。所构建的有限元模型和实验结果吻合较好,较好地呈现了纤维起伏区域的应变集中,失效起始和扩展行为。

     

  • 图  1  纤维缠绕结构平板示意图

    Figure  1.  Schematic diagram of fiber wound plate specimen

    图  2  T300碳纤维/环氧树脂复合材料预浸料固化温度和压力时程曲线

    Figure  2.  Curing temperature and pressure curves of T300/ epoxy resin composite prepreg

    图  3  两种结构试样示意图

    Figure  3.  Schematic diagram of two structure samples

    图  4  实验方法示意图

    Figure  4.  Schematic diagram of experimental method

    图  5  缠绕结构复合材料纤维束起伏示意图

    Figure  5.  Fiber crossover and undulation diagram of filament wound structure composite

    图  6  缠绕结构复合材料有限元模型组成图

    Figure  6.  Composition diagram of filament wound structure composite finite element model

    图  7  T300碳纤维/环氧树脂复合材料拉伸载荷-位移曲线

    Figure  7.  Tensile load-displacement curves of T300 carbon fiber/epoxy resin composites

    图  8  T300碳纤维/环氧树脂复合材料试样破坏形态

    Figure  8.  Failure pattern of T300 carbon fiber/epoxy resin composite specimens

    图  9  T300碳纤维/环氧树脂复合材料层合结构拉伸实验过程应变场变化

    Figure  9.  Variation of strain field during tensile test of T300 carbon fiber/epoxy resin composite laminated structure

    图  10  T300碳纤维/环氧树脂复合材料缠绕结构实验过程应变场变化

    Figure  10.  Variation of strain field during tensile test of T300/epoxy resin composite wound structure

    图  11  T300碳纤维/环氧树脂复合材料层合结构有限元仿真应变场变化

    Figure  11.  Variation of strain field in finite element simulation of T300 carbon fiber/epoxy resin composite laminated structure

    图  12  T300碳纤维/环氧树脂复合材料缠绕结构有限元仿真应变场变化

    Figure  12.  Variation of strain field in finite element simulation of T300 carbon fiber/epoxy resin composite wound structure

    图  13  实验与仿真所得T300碳纤维/环氧树脂复合材料缠绕结构竖直方向应变(εyy)的曲面图

    Figure  13.  Surface diagrams of the vertical strain (εyy) of T300 carbon fiber/epoxy resin composite wound structure obtained from experiment and simulation

    图  14  缠绕结构中显微镜下纤维束交叉起伏截面图

    Figure  14.  Cross undulating section image of fiber bundle captured by microscope in wound structure

    图  15  缠绕结构中的纤维伸展和偏转示意图

    Figure  15.  Schematic diagram of fiber stretching and rotation in wound structure

    图  16  T300碳纤维/环氧树脂复合材料缠绕结构应力云图

    Figure  16.  Stress contour of T300 carbon fiber/epoxy resin composite wound structure

    图  17  T300碳纤维/环氧树脂复合材料层合结构应力云图

    Figure  17.  Stress contour of T300 carbon fiber/epoxy resin composite laminated structure

    图  18  T300碳纤维/环氧树脂复合材料缠绕结构基体拉伸损伤过程

    Figure  18.  Matrix tensile damage process of T300 carbon fiber/epoxy resin composite wound structure

    图  19  T300碳纤维/环氧树脂复合材料缠绕结构纤维交叉起伏区域应力云图

    Figure  19.  Stress nephogram of fiber cross fluctuation area of T300 carbon fiber/epoxy resin composite wound structure

    图  20  T300碳纤维/环氧树脂复合材料层合结构纤维方向应力云图

    Figure  20.  Stress nephogram in fiber direction of T300 carbon fiber/epoxy resin composite laminated structure

    表  1  试样编号和数量

    Table  1.   Lable and number of samples

    LableNumber of sample
    FWC3
    SLC3
    Notes: FWC-Filament wound composites; SLC-Standard laminate composites.
    下载: 导出CSV

    表  2  T300碳纤维/环氧树脂复合材料预浸料材料参数

    Table  2.   Material properties of T300 carbon fiber/epoxy resin composite prepreg

    ParameterValue
    E11/GPa127
    E22/GPa7.9
    E33/GPa7.9
    μ120.35
    μ130.35
    μ230.45
    G12/GPa2.1
    G13/GPa2.1
    G23/GPa4.8
    XT/GPa2.0
    XC/GPa1.2
    YT/MPa38.5
    YC/MPa180.7
    S/MPa135.0
    Gft/(N·mm-1)133
    Gfc/(N·mm-1)60
    Gmt/(N·mm-1)0.352
    Gmc/(N·mm-1)1.45
    Notes:E - Elastic modulus; μ - Poisson ratio; G - Shear modulus; 1 -Direction of fiber; 2 - Direction of matrix; 3 - Thickness direction of layer; XT - Longitudinal tensile strength; XC - Longitudinal compressive strength; YT - Transverse tensile strength; YC - Transverse compressive strength; S - In-plane shear strength; Gft, Gfc, Gmt, Gmc - Critical value of strain energy release rate.
    下载: 导出CSV

    表  3  环氧树脂弹性参数

    Table  3.   Elastic parameters of epoxy resin

    ParameterValue
    E/GPa3.0
    μ0.37
    Notes:E - Elastic modulus; μ – Poisson’s ratio.
    下载: 导出CSV

    表  4  内聚力单元界面性能参数

    Table  4.   Interface performance parameters of cohesive element

    ParameterValue
    T/MPa48.0
    T/MPa79.0
    K/(N·mm-2)106
    GⅠC/(N·mm-1)0.128
    GⅡC/(N·mm-1)0.653
    Notes: T, T - Mode Ⅰ/Ⅱ strength; K - Interface stiffness, GⅠC/ GⅡC - Critical strain energy release rates.
    下载: 导出CSV

    表  5  T300碳纤维/环氧树脂复合材料实验结果比较

    Table  5.   Comparison of experimental results of T300 carbon fiber/epoxy resin composites

    StructureUltra load/kNFailure displacement/mm
    FWC5.22.7
    SLC5.21.8
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-02-11
  • 录用日期:  2022-04-09
  • 修回日期:  2022-04-02
  • 网络出版日期:  2022-04-30

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