Finite element analysis of the buckling of the liner of composite pressure vessel with depression

ZHANG Guo; ZHU Haiyang; CAI Yaqi; REN Mingfa; LI Gang

doi:10.13801/j.cnki.fhclxb.20210518.004

Volume 39 Issue 3

Mar. 2021

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ZHANG Guo, ZHU Haiyang, CAI Yaqi, et al. Finite element analysis of the buckling of the liner of composite pressure vessel with depression[J]. Acta Materiae Compositae Sinica, 2022, 39(3): 1343-1352. doi: 10.13801/j.cnki.fhclxb.20210518.004

Citation:

ZHANG Guo, ZHU Haiyang, CAI Yaqi, et al. Finite element analysis of the buckling of the liner of composite pressure vessel with depression[J]. Acta Materiae Compositae Sinica, 2022, 39(3): 1343-1352. doi: 10.13801/j.cnki.fhclxb.20210518.004

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Finite element analysis of the buckling of the liner of composite pressure vessel with depression

doi: 10.13801/j.cnki.fhclxb.20210518.004

ZHANG Guo^{1, 2
,},
ZHU Haiyang^1
,,
CAI Yaqi^3
,,
REN Mingfa^{1, 4
,
,},
LI Gang^{1, 4
,}

1.
Faculty of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
2.
Beijing Chinatank Industry Co. Ltd., Beijing 100024, China
3.
CRRC Dalian Institute Co. Ltd., Dalian 116021, China
4.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China

Received Date: 2021-03-17
Accepted Date: 2021-05-09
Rev Recd Date: 2021-04-27

Available Online: 2021-05-18

Publish Date: 2021-03-01

Abstract

Abstract

A method for buckling analysis of liner of composite pressure vessel with depression was proposed. Based on the assumption of plane strain, the shrinkage buckling analysis model of the semicircular ring with depress-ion was established, and the depression was introduced into the finite element analysis model by modifying the coordinates of nodes. The nonlinear iterative method was used to gradually increase the in-plane load, and the shrinkage buckling analysis of the semicircular ring with depression was analyzed. On this basis, a three-dimensional finite element analysis model of composite pressure vessel containing a liner with depression was established, the hoop and axial components of the residual stress of the liner after autofrettage was considered to analysis the buckling of the liner with depression after autofrettage of composite pressure vessel. Taking a 130 L spherical head and thin-walled aluminum alloy liner full-wound composite pressure vessel as an example, the critical buckling load of the liner and the stress and deformation of the liner when buckling occurred were analyzed. The results show that the buckling mode of the liner with initial depression after autofrettage is local buckling; the greater the initial depression depth, the lower the critical buckling load; the area where the distance from the middle of the straight section is 1/2 of the axial width of the depression and near the head of the straight section is prone to buckling, which is the weakness zone of the metal liner.
- composite materials,
- pressure vessels,
- liner,
- buckling,
- finite element analysis
Long Abstrsct
Innovation Points

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References(20)

References

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