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

ZHAO Liang; LI Yawei; WANG Jianbao; LI Dongdong; DING Shuai; BI Qingjie

doi:10.21656/1000-0887.450086

Volume 45 Issue 9

Sep. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(9): 1224-1234

ZHAO Liang, LI Yawei, WANG Jianbao, LI Dongdong, DING Shuai, BI Qingjie. Residual Axial Deformation and Buckling Analysis of Thin-Walled Carbon Fiber Fully Wound Composite Gas Cylinders[J]. Applied Mathematics and Mechanics, 2024, 45(9): 1224-1234. doi: 10.21656/1000-0887.450086

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

doi: 10.21656/1000-0887.450086

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

Received Date: 2024-04-07
Rev Recd Date: 2024-05-28
Publish Date: 2024-09-01

Abstract

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

(Recommended by TIAN Kuo, M.AMM Youth Editorial Board)

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References(11)

References

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