薄壁内胆碳纤维全缠绕复合材料气瓶轴向残余变形及屈曲分析

赵亮; 李亚伟; 王建宝; 李东东; 丁帅; 毕清洁

doi:10.21656/1000-0887.450086

薄壁内胆碳纤维全缠绕复合材料气瓶轴向残余变形及屈曲分析

doi: 10.21656/1000-0887.450086

1. 北京科泰克科技有限责任公司，北京 101300;
2. 大连理工大学力学与航空航天学院，辽宁大连 116024

基金项目:

国家重点研发计划“政府间国际科技创新合作”重点专项（2021YFE0115400）

详细信息

作者简介:
赵亮（1988—），男，工程师，硕士(通讯作者. E-mail: zhaol258@avic.com).

通讯作者:
赵亮（1988—），男，工程师，硕士(通讯作者. E-mail: zhaol258@avic.com).

中图分类号: TB332
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出版历程
- 收稿日期: 2024-04-07
- 修回日期: 2024-05-28
- 网络出版日期: 2024-09-30

Residual Axial Deformation and Buckling Analysis of ThinWalled Carbon Fiber Fully Wound Composite Gas Cylinders

1. Beijing China Tank Industry Co., Ltd., Beijing 101300, P.R.China;
2. School of Mechanics and Aerospace Engineering, Dalian University of Technology, Dalian, Liaoning 116024, P.R.China

摘要

摘要: 针对钛合金薄壁内胆碳纤维全缠绕复合材料气瓶水压试验后轴向缩短及内胆局部发生屈曲失稳现象，开展了试验研究及有限元分析.结果表明：自紧加卸载后，封头靠近极孔区域沿轴向向内凹陷，封头靠近赤道区域沿径向向外扩张，封头整体沿轴向变短，试验和有限元计算的轴向缩短量为6.15 mm和6.363 mm，误差为3.46%，有限元计算结果与试验结果具有很好的一致性.最后，采用多极孔法优化封头纤维层厚度分布，封头厚度极值降低32.6%，过渡更加均匀，优化后的气瓶沿轴向略有伸长，平均伸长为0.6 mm，采用CT和内窥镜检测，内胆均未出现屈曲失稳，有效地解决了水压试验后轴向缩短及内胆屈曲问题.
- 复合材料气瓶 /
- 薄壁内胆 /
- 钛合金 /
- 残余变形 /
- 屈曲
Abstract: Experimental research and finite element analysis were carried out to study the phenomenon of axial shortening and buckling instability of carbon fiber fully wound composite gas cylinders with titanium alloy thin-wall liners after hydraulic test. The results show that, after self-tightening and unloading, the area near the polar hole of the head will be concave axially, the area near the equator of the head will expand radially, and the whole head will become shorter axially. The axial shortening of the head will be 6.15 mm and 6.363 mm, respectively, and the error of the finite element calculation will be 3.46%. The finite element simulation results are in good agreement with the experimental results. Finally, the multi-pole hole method was used to optimize the thickness distribution of the fiber layer of the head, and the extreme thickness of the head was reduced by 32.6%, and the transition was made smoother. After the optimization, the gas cylinder will be slightly extended along the axis, with an average elongation of 0.6 mm. By CT and endoscope detections, no buckling instability would appear in the liner, which means an effective solution of the problems of axial shortening and liner buckling after hydraulic tests.
- composite gas cylinder /
- thin-walled liner /
- titanium alloy /
- residual deformation /
- buckling

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参考文献(11)

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