Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads

WANG Wanyue; GENG Shaobo; WANG Hua; LI Wenqiang; LIU Yaling

doi:10.11858/gywlxb.20210858

Volume 36 Issue 3

May. 2022

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Chinese Journal of High Pressure Physics > 2022 > 36(3): 034104.

WANG Wanyue, GENG Shaobo, WANG Hua, LI Wenqiang, LIU Yaling. Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034104. doi: 10.11858/gywlxb.20210858

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WANG Wanyue, GENG Shaobo, WANG Hua, LI Wenqiang, LIU Yaling. Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads[J]. Chinese Journal of High Pressure Physics, 2022, 36(3): 034104. doi: 10.11858/gywlxb.20210858

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Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads

doi: 10.11858/gywlxb.20210858

WANG Wanyue^{1, 2
,},
GENG Shaobo^{2,*
,
,},
WANG Hua^{1, 3},
LI Wenqiang⁴,
LIU Yaling²

1.
College of Mechatronics Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
Department of Civil Engineering, North University of China, Taiyuan 030051, Shanxi, China
3.
School of Astronautics, Beihang University, Beijing 100191, China
4.
School of Information and Communication Engineering, North University of China, Taiyuan 030051, Shanxi, China

Received Date: 26 Jul 2021
Rev Recd Date: 06 Sep 2021
Issue Publish Date: 30 May 2022

Abstract

Abstract

In order to study the dynamic response and damage of square steel tubular structural components under near-field multiple blast loads, the explosion resistance performance of square steel tubes is obtained from the number of equal parts, the charge mass ratio and the initiation time interval at the same total explosive charge based on the explosion test. The results show that when the total explosive is equally divided with simultaneous detonation, the deformation on the front surface and the deflection of the tube under multiple blast loads are both larger than that of the tube under single blast load by 17.5% and 32.1%, respectively. For two explosive loads, when the mass of the two explosives is close, the deformations on the front surface and the deflection are greater than that the mass of the two explosives is quite different by 18.3% and 19.7%, respectively. For multiple blast loads, when the distance between the explosive center of each explosive and the mid-span of the tube is equal, the deformation on the front surface of the tube with non-simultaneous detonation is smaller than that of the tube with simultaneous detonation by 4.3%, and the longer the initiation time interval is, the smaller the deformation will be. When the distance between the explosive center of each explosive and the mid-span of the tube is not equal, if the initiation time of the explosives is appropriate, the deformation on the front surface of the tube with non-simultaneous detonation can be larger than that of the tube with simultaneous detonation by 13.9%.
- blast load,
- square steel tube,
- explosive equal part,
- mass ratio,
- initiation time

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References

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Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads

doi: 10.11858/gywlxb.20210858

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Dynamic Response and Damage of Square Steel Tubular Structural Components by Near-Field Multiple Blast Loads

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