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环氧树脂基复合材料加筋板结构吸湿行为研究

喻健 何宇廷 冯宇 马斌麟 张腾 杨飞

喻健, 何宇廷, 冯宇, 等 . 环氧树脂基复合材料加筋板结构吸湿行为研究[J]. 北京航空航天大学学报, 2021, 47(9): 1908-1917. doi: 10.13700/j.bh.1001-5965.2020.0532
引用本文: 喻健, 何宇廷, 冯宇, 等 . 环氧树脂基复合材料加筋板结构吸湿行为研究[J]. 北京航空航天大学学报, 2021, 47(9): 1908-1917. doi: 10.13700/j.bh.1001-5965.2020.0532
YU Jian, HE Yuting, FENG Yu, et al. Moisture absorption behavior of epoxy resin matrix composite stiffened panel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(9): 1908-1917. doi: 10.13700/j.bh.1001-5965.2020.0532(in Chinese)
Citation: YU Jian, HE Yuting, FENG Yu, et al. Moisture absorption behavior of epoxy resin matrix composite stiffened panel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(9): 1908-1917. doi: 10.13700/j.bh.1001-5965.2020.0532(in Chinese)

环氧树脂基复合材料加筋板结构吸湿行为研究

doi: 10.13700/j.bh.1001-5965.2020.0532
基金项目: 

国家自然科学基金 51805538

陕西省高校科协青年人才托举计划 20190410

陕西省自然科学基础研究计划 2020JQ-476

详细信息
    通讯作者:

    冯宇, E-mail: fynuaa@126.com

  • 中图分类号: V258+.3;TB332

Moisture absorption behavior of epoxy resin matrix composite stiffened panel

Funds: 

National Natural Science Foundation of China 51805538

Yong Talents Fund of University Association for Science and Technology in Shaanxi, China 20190410

Natural Science Basic Research Program of Shaanxi 2020JQ-476

More Information
  • 摘要:

    环氧树脂基复合材料的性能对湿热环境敏感,掌握该材料所组成结构的吸湿行为对其实际应用具有重要意义。通过以碳纤维环氧树脂基复合材料层合板的non-Fickian吸湿模型为基础,建立环氧树脂基复合材料加筋板结构的non-Fickian吸湿模型,在70℃/85% RH湿热条件下开展加筋板结构的吸湿实验,对所建立模型进行验证,并与已有的加筋板吸湿模型进行对比,通过所建立模型给出了加筋板沿厚度方向的吸湿量分布规律。结果表明:所建立加筋板non-Fickian吸湿模型的计算结果与实验结果吻合良好,在整个吸湿阶段相对误差小于5%,模型的预测精度高于传统Fick模型。所建立的加筋板non-Fickian吸湿模型可用于环氧树脂基复合材料加筋板层合结构吸湿量的准确预测。

     

  • 图 1  典型复合材料加筋板结构

    Figure 1.  Typical composite stiffened panel structure

    图 2  加筋板结构按厚度划分区域示意图

    Figure 2.  Schematic diagram of stiffened panel divided into areas by thickness

    图 3  实验件和加强筋条示意图

    Figure 3.  Schematic diagram of specimen and stiffener

    图 4  加筋板实验件吸湿实验数据

    Figure 4.  Experimental results for moisture absorption of stiffened panel specimens

    图 5  2 mm层合板吸湿实验结果和模型预测结果

    Figure 5.  Moisture absorption experimental result and model predictive result of laminate with 2 mm thickness

    图 6  各模型的预测结果及绝对误差对比

    Figure 6.  Comparison of predictive results and errors among different models

    图 7  各模型的预测结果及绝对误差对比(文献[18]实验数据)

    Figure 7.  Comparison of predictive results and errors among different models (experimental data in Ref.[18])

    图 8  不同时刻下实验件各厚度区域沿厚度方向的吸湿量

    Figure 8.  Absorbed moisture content of specimen along thickness direction in area with different thickness at different time

    图 9  有限元模型

    Figure 9.  Finite element model

    图 10  不同时刻下复合材料加筋板吸湿量云图

    Figure 10.  Contours of absorbed moisture content of composite stiffened panel at different time

    表  1  各区域铺层定义

    Table  1.   Lay-up definition at each zone

    部位 铺层顺序
    蒙皮壁板
    加强筋条
    [45*/45/03/-45/90/0/90]s
    [0/45/-45/90/45/02/-45]s
    下载: 导出CSV

    表  2  mm层合板non-Fickian吸湿模型参数

    Table  2.   Parameters of non-Fickian moisture absorption model of laminate with 2 mm thickness

    参数 Mm/% ϕ hF/mm Dz/(mm2·d-1) α t0/d
    数值 0.79 0.8 1 0.003 1 0.4 15
    下载: 导出CSV

    表  3  加筋板non-Fickian吸湿模型参数

    Table  3.   Parameters of non-Fickian moisture absorption model of stiffened panel

    参数 区域1 区域2 区域3
    Mmi/% 0.702 0.702 0.702
    ϕi 0.8 0.696 0.467
    hi/mm 2 2.46 4.46
    Dz/(mm2·d-1) 0.004 0.004 0.004
    αi 0.4 0.251 5 0.078 4
    ti/d 15 20 71
    下载: 导出CSV

    表  4  模型1和模型2参数

    Table  4.   Parameters of model 1 and model 2

    模型1参数 数值 模型2参数 数值
    Mn1/% 0.56 MT/% 0.702
    Mn2/% 0.142 Dz2/(mm2·d-1) 0.008 6
    DzⅠ-1/(mm2·d-1) 0.009 7 ϕT 0.6
    DzⅠ-2/(mm2·d-1) 0.014 4 αT 0.001 24
    b/mm 2 βT 0.233
    tF/d 58 tT/d 20
    注:b为板厚度;αT为吸湿系数;βT为吸湿系数;tT为进入non-Fickian时间。
    下载: 导出CSV

    表  5  文献[18]数据对应的non-Fickian吸湿模型参数

    Table  5.   Non-Fickian moisture absorption model parameters corresponding to experimental results in Ref.[18]

    参数 区域1 区域2
    Mmi/% 0.581 3 0.581 3
    ϕi 0.8 0.6
    hi/mm 2.73 5.46
    Dz/(mm2·d-1) 0.006 8 0.006 8
    αi 0.205 0.091 2
    ti/d 20 32
    下载: 导出CSV

    表  6  文献[18]数据对应的模型1和模型2参数

    Table  6.   Parameters of model 1 and model 2 corresponding to experimental results in Ref.[18]

    模型1参数 数值 模型2参数 数值
    Mn1/% 0.37 MT/% 0.581 3
    Mn2/% 0.211 3 Dz2/(mm2·d-1) 9×10-4
    DzⅠ-1/(mm2·d-1) 0.025 ϕT 0.796
    DzⅠ-2/(mm2·d-1) 0.018 9 αT 5.16×10-5
    b/mm 2.73 βT 0.233
    tF/d 20 tT/d 20
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-09-21
  • 录用日期:  2020-11-20
  • 网络出版日期:  2021-09-20

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