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

doi:10.13700/j.bh.1001-5965.2020.0532

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

喻健^{1, 2},
何宇廷^{1, 3},
冯宇^{1, 3, ,},
马斌麟¹,
张腾¹,
杨飞^{1, 4}

1.
空军工程大学航空航天工程学院, 西安 710038
2.
中国人民解放军94795部队, 南通 226500
3.
西北工业大学航空学院, 西安 710072
4.
贵州航天天马机电科技有限公司, 遵义 563000

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
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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

Moisture absorption behavior of epoxy resin matrix composite stiffened panel

YU Jian^{1, 2},
HE Yuting^{1, 3},
FENG Yu^{1, 3
, ,},
MA Binlin¹,
ZHANG Teng¹,
YANG Fei^{1, 4}

1.
Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi'an 710038, China
2.
94795 Troops of the Chinese People's Liberation Army, Nantong 226500, China
3.
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
4.
Guizhou Aerospace Tianma Electromechanicals Co., Ltd., Zunyi 563000, China

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

Corresponding author: FENG Yu, E-mail: fynuaa@126.com

摘要

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。
- 复合材料 /
- 加筋板结构 /
- 吸湿行为 /
- non-Fickian行为 /
- 有限元仿真
Abstract:
The properties of epoxy resin matrix composites are sensitive to hygrothermal environment, and it is of great significance to investigate the moisture absorption behavior of epoxy resin matrix composite structures for its practical application. Based on the non-Fickian moisture absorption model of carbon fiber epoxy resin matrix laminates, the non-Fickian moisture absorption model for the epoxy resin matrix stiffened panel was established, the moisture absorption experiments of stiffened panel were conducted under the condition of 70℃/85% RH, and the established model was verified. The proposed model was compared with the existing moisture absorption model further. Finally, the moisture absorption distribution of the typical stiffened panel along the thickness direction was given through the established model. The results show that the calculated results of the established non-Fickian moisture absorption model of the stiffened panel are in good agreement with the experimental results. The relative error of the moisture absorption through the entire moisture absorption stage is less than 5%, and the predictive accuracy of the model is higher than that of the traditional Fick model. The established non-Fickian moisture absorption model of stiffened panel can be used to accurately predict the absorbed moisture content of epoxy resin matrix composite stiffened panels.
- composite /
- stiffened panel /
- moisture absorption behavior /
- non-Fickian behavior /
- finite element simulation

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图 1 典型复合材料加筋板结构

Figure 1. Typical composite stiffened panel structure

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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

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图 3 实验件和加强筋条示意图

Figure 3. Schematic diagram of specimen and stiffener

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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

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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

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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

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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])

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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

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图 9 有限元模型

Figure 9. Finite element model

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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

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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

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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	D_z/(mm²·d^-1)	α	t₀/d
数值	0.79	0.8	1	0.003 1	0.4	15

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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
M_mi/%	0.702	0.702	0.702
ϕ_i	0.8	0.696	0.467
h_i/mm	2	2.46	4.46
D_z/(mm²·d^-1)	0.004	0.004	0.004
α_i	0.4	0.251 5	0.078 4
t_i/d	15	20	71

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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
M_n1/%	0.56	M_T/%	0.702
M_n2/%	0.142	D_z2/(mm²·d^-1)	0.008 6
D_zⅠ-1/(mm²·d^-1)	0.009 7	ϕ_T	0.6
D_zⅠ-2/(mm²·d^-1)	0.014 4	α_T	0.001 24
b/mm	2	β_T	0.233
t_F/d	58	tT/d	20
注：b为板厚度；α_T为吸湿系数；β_T为吸湿系数；t_T为进入non-Fickian时间。

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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
M_mi/%	0.581 3	0.581 3
ϕ_i	0.8	0.6
h_i/mm	2.73	5.46
D_z/(mm²·d^-1)	0.006 8	0.006 8
α_i	0.205	0.091 2
t_i/d	20	32

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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
M_n1/%	0.37	MT/%	0.581 3
M_n2/%	0.211 3	D_z2/(mm²·d^-1)	9×10^－4
D_zⅠ-1/(mm²·d^-1)	0.025	ϕT	0.796
D_zⅠ-2/(mm²·d^-1)	0.018 9	αT	5.16×10^－5
b/mm	2.73	βT	0.233
t_F/d	20	t_T/d	20

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