CLC number: TU352
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 2019-10-10
Cited: 0
Clicked: 4511
Citations: Bibtex RefMan EndNote GB/T7714
Chen Yan, Xi-mei Zhai, Yong-hui Wang. Numerical study on the dynamic response of a massive liquefied natural gas outer tank under impact loading[J]. Journal of Zhejiang University Science A, 2019, 20(11): 823-837.
@article{title="Numerical study on the dynamic response of a massive liquefied natural gas outer tank under impact loading",
author="Chen Yan, Xi-mei Zhai, Yong-hui Wang",
journal="Journal of Zhejiang University Science A",
volume="20",
number="11",
pages="823-837",
year="2019",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1900172"
}
%0 Journal Article
%T Numerical study on the dynamic response of a massive liquefied natural gas outer tank under impact loading
%A Chen Yan
%A Xi-mei Zhai
%A Yong-hui Wang
%J Journal of Zhejiang University SCIENCE A
%V 20
%N 11
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1900172
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T1 - Numerical study on the dynamic response of a massive liquefied natural gas outer tank under impact loading
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A1 - Xi-mei Zhai
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J0 - Journal of Zhejiang University Science A
VL - 20
IS - 11
SP - 823
EP - 837
%@ 1673-565X
Y1 - 2019
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1900172
Abstract: In this paper, the dynamic response of a typical 160 000 m3 liquefied natural gas (LNG) prestressed concrete outer tank under impact loading is investigated. The applicability of the Holmquist-Johnson-Cook (HJC) material model of concrete and numerical simulation method on impact that is proposed in this paper is verified by the test results of concrete slabs under projectile impact cited from the reference. A detailed finite element (FE) model of the LNG outer tank, including walls, buttresses, domes, beams, and bottom plates, under the impact of a Tomahawk cruise missile is established. In addition, pre-stress on the wall, impact angles, locations, and velocities are considered and their influence on dynamic response studied. The impact damage types for the LNG outer tank are concluded according to dynamic response results including stress, displacement, stress sweep range, and energy, and critical impact velocities to distinguish these damage types are also determined. In addition, the damage types and their failure mechanism are analyzed by the damage factor proposed in this paper, which is based on energy propagation. Finally, four empirical formulas of impact loading recommended by the standard “accident analysis for aircraft crash into hazardous facilities” are used for checking the impact resistance performance of the LNG outer tank and compared with FE numerical simulation results. It is demonstrated, by using empirical formulas, that the common 160 000 m3 LNG outer concrete tank could suffer flange impact loading. However, all the four empirical results were more conservative compared to numerical results under the same missile perforation velocity.
This paper presents a study on the dynamic response of a massive LNG tank under impact load of a missile. The study uses a FE model to verify the modelling approach based on experimental tests and to, subsequently, assess the response of the tank under impact load. The study has some interesting aspects and through a parametric study it provides also some design criteria in the end.
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