含有小尺寸分层缺陷复合材料压力容器的应变响应及分析

柏慧; 惠虎; 杨斌; 孔芳

doi:10.11858/gywlxb.20210717

含有小尺寸分层缺陷复合材料压力容器的应变响应及分析

doi: 10.11858/gywlxb.20210717

柏慧^1,,
惠虎^1,*, ,,
杨斌²,
孔芳³

1.
华东理工大学机械与动力工程学院，上海　200237
2.
同济大学航空航天与力学学院，上海　200092
3.
枣庄科技职业学院，山东枣庄　277599

基金项目: 国家自然科学基金（51775187，51835003）

详细信息

作者简介:
柏　慧（1994－），女，博士研究生，主要从事压力容器和管道结构完整性和安全性研究.E-mail：dongyoubaihui@163.com

通讯作者:
惠　虎（1974－），男，博士，教授，主要从事压力容器及管道的结构完整性、奥氏体不锈钢容器的应变强化技术以及移动式压力容器的安全泄放装置研究. E-mail：huihu@ecust.edu.cn

中图分类号: O342
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出版历程
- 收稿日期: 2021-01-27
- 修回日期: 2021-02-14

Strain Response and Analysis of Pressure Vessels with Small Delamination Defects

BAI Hui^1
,,
HUI Hu^{1,*
, ,},
YANG Bin²,
KONG Fang³

1.
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
2.
School of Aerospace and Mechanics, Tongji University, Shanghai 200092, China
3.
Zaozhuang Vocational College of Science and Technology, Zaozhuang 277599, Shandong, China

摘要

摘要: 采用乙烯基酯树脂预浸料，利用缠绕法制造了ECR耐腐蚀玻璃纤维增强环氧树脂基复合材料压力容器，在水压试验过程中基于电测法测量压力容器筒体的应变变化情况，结合Abaqus/Explicit有限元模拟重点预测了含有内部分层缺陷的压力容器在外载荷作用下的应变响应。试验和模拟结果表明：该有限元模型的结果与实验结果的相对误差小于12%；当含有内部分层缺陷（缺陷直径分别为10、20、30、40和50 mm）的复合材料压力容器受到位移载荷时，周向应变是主要应变，最大纵向应变和Mises应力位置与加载位置重合，且最大Mises应力随分层面积的增加而增大。
- 复合材料 /
- 压力容器 /
- 缺陷 /
- 应变 /
- 分层
Abstract: Using vinyl ester resin prepreg and winding method, a ECR corrosion resistant glass fiber reinforced epoxy resin matrix composite pressure vessel was manufactured. The strain variation of the pressure cylinder was measured in the hydraulic test using the electrical method.And the strain response of the pressure vessel with internal delamination defects under external loadings was predicted by Abaqus/Explicit finite element simulation. The experimental and simulation results show that the error between the results of the finite element model and the experimental results is less than 12%. When the composite pressure vessel containing internal delamination defects (defect diameter 10, 20, 30, 40 and50 mm) is subjected to displacement load, the circumferential strain is the main strain, the maximum longitudinal strain and Mises stress position coincide with the loading position, and the maximum Mises stress increases with the increasing delamination area.
- composite material /
- pressure vessel /
- defect /
- strain /
- delamination

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图 1 纤维缠绕压力容器的制造示意图

Figure 1. Schematic diagram of fabrication of thefiber wound pressure vessel

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图 2 水压试验和应变测量系统

Figure 2. Hydraulic test and strain measurement system

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图 3 有限元模型与数值模拟结果

Figure 3. Finite element model and numerical simulation results

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图 4 含有分层缺陷压力容器的有限元模型

Figure 4. Finite element model of a pressure vessel with stratified defects

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图 5 含有不同尺寸分层缺陷复合材料压力容器的应力云图

Figure 5. Stress contour of composite pressure vessel with different delamination defects

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图 6 含有不同尺寸分层缺陷复合材料压力容器的应变云图

Figure 6. Strain contour of composite pressure vessel with different delamination defects

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图 7 分析路径的选择

Figure 7. Selection of analysis paths

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图 8 不同分层面积应变沿路径的变化曲线

Figure 8. Variation curves of area strain in different layers along the path

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表 1 玻璃纤维/环氧树脂复合材料板的刚度参数^[18-19]

Table 1. Stiffness parameters of glass fiber/epoxy resin composite plate^[18-19] 　

E₁/GPa	E₂/GPa	E₃/GPa	G₁₂/GPa	G₁₃/GPa	G₂₃/GPa	v₁₂	v₁₃	v₂₃
39.39 ± 0.36	18.10 ± 0.24	18.10 ± 0.24	6.31 ± 0.38	6.00 ± 0.27	6.00 ± 0.27	0.270 ± 0.012	0.350 ± 0.015	0.350 ± 0.015

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表 2 玻璃纤维/环氧树脂复合材料板的强度参数^[18-19]

Table 2. Strength parameters of glass fiber/epoxy rsesin composite plate^[18-19] MPa　

X_T	X_C	Y_T	Y_C	Z_T	Z_C	S₁₂	S₁₃	S₂₃
222.7 ± 18.0	200 ± 22	136 ± 22	100 ± 4	50 ± 2	100 ± 4	90.5 ± 4.2	50.00 ± 3.12	50.00 ± 3.12

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表 3 玻璃纤维压力容器的材料刚度递减规则

Table 3. Decreasing rules of material stiffness for glass fiber pressure vessels

Failure mode	Rules for decreasing stiffness of materials
Tensile damage of longitudinal fiber	E₁₁ = 0.07E₁₁, G₁₂ = 0.07G₁₂, G₁₃ = 0.07G₁₃, v₁₂ = 0.07v₁₂, v₁₃ = 0.07v₁₃
Compression damage of transverse	E₁₁ = 0.14E₁₁, G₁₂ = 0.14G₁₂, G₁₃ = 0.14G₁₃, v₁₂ = 0.14v₁₂, v₁₃ = 0.14v₁₃
Radial fiber tensile damage	E₂₂ = 0.2E₂₂, G₁₂ = 0.2G₁₂, G₂₃ = 0.2G₂₃, v₁₂ = 0.2v₁₂, v₂₃ = 0.2v₂₃
Radial fiber compression damage	E₂₂ = 0.4E₂₂, G₁₂ = 0.4G₁₂, G₂₃ = 0.4G₂₃, v₁₂ = 0.4v₁₂, v₂₃ = 0.4v₂₃
Z-direction fiber tensile damage	E₃₃ = 0.2E₃₃, G₁₃ = 0.2G₁₃, G₂₃ = 0.2G₂₃, v₁₃ = 0.2v₁₃, v₂₃ = 0.2v₂₃
Z-direction fiber compression damage	E₃₃ = 0.2 E₃₃, G₁₃ = 0.2G₁₃, G₂₃ = 0.2G₂₃, v₁₃ = 0.2v₁₃, v₂₃ = 0.2v₂₃

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