Blast loads on the inner wall of cylindrical explosion containment vessel

LIU Xin; GU Wenbin; CAI Xinghui; WANG Tao; LIU Jianqing; WANG Zhenxiong; SHEN Huiming

doi:10.11883/bzycj-2021-0209

Volume 42 Issue 2

Feb. 2022

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LIU Xin, GU Wenbin, CAI Xinghui, WANG Tao, LIU Jianqing, WANG Zhenxiong, SHEN Huiming. Blast loads on the inner wall of cylindrical explosion containment vessel[J]. Explosion And Shock Waves, 2022, 42(2): 022201. doi: 10.11883/bzycj-2021-0209

Citation:

LIU Xin, GU Wenbin, CAI Xinghui, WANG Tao, LIU Jianqing, WANG Zhenxiong, SHEN Huiming. Blast loads on the inner wall of cylindrical explosion containment vessel[J]. Explosion And Shock Waves, 2022, 42(2): 022201. doi: 10.11883/bzycj-2021-0209

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Blast loads on the inner wall of cylindrical explosion containment vessel

doi: 10.11883/bzycj-2021-0209

1.
School of Nuclear Engineering, Rocket Army Engineering University, Xiʾan 710038, Shaanxi, China
2.
School of Field Engineering, Army Engineering University, Nanjing 210007, Jiangsu, China
3.
Institute of Chemical Defense, Academy of Military Sciences, Beijing 102205, China

Received Date: 2021-05-26
Accepted Date: 2022-01-18
Rev Recd Date: 2021-09-20

Available Online: 2022-02-11

Publish Date: 2022-02-28

Abstract

Abstract

The determination of the blast loads acting on the inner wall of explosion containment eessels (ECVs) is the basis for the study of the dynamic response characteristics, the design of structure and the safety assessment of ECVs. In order to obtain the characteristics and distribution law of the blast loads acting on the inner wall of cylindrical explosive containment vessels when the central charge is exploded, a series of implosion loading tests were carried out on the self-developed combined cylindrical explosion containment vessel, with the blast loads acting on several typical positions of the inner wall of the vessel being measured, while by using ANSYS/LS-DYNA software, a simplified model of 1/8 of the vessel is established to numerically simulate the whole process of formation and propagation of the internal detonation field of the vessel. Through the analysis of the test results, the characteristics of the blast loading on the inner wall of the vessel and its distribution law are obtained, and the empirical calculation formulas for the peak pressure, positive pressure action time and specific impulse of the first pulse of blast loads acting on the inner wall of the cylindrical shell part of the vessel, and the empirical calculation formulas for the quasi-static pressure inside the vessel are fitted. By analyzing the numerical simulation results, the formation mechanism of the characteristics and distribution law of the blast loads on the inner wall of the vessel are clarified. The research results show that the Mach reflection waves generated from the inner wall of the ellipsoid end cap converge at the end cap pole, so that the peak pressure and the peak specific impulse of single pulse of the blast loading on the pole are always the biggest among all the measurement points, and the maximum peak pressure of the load can reach 2.79 times the maximum peak pressure that acting on the cylindrical shell, which should be paid a close attention.
- cylindrical explosion containment vessels,
- blast loading on the inner wall,
- peak pressure,
- specific impulse

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References

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