Deformation and payload of thin circular plates subjected to internal explosion

LI Zhirong; ZHANG Yulei; YUAN Jianfei; WANG Shengqiang

doi:10.11883/bzycj-2020-0045

Volume 40 Issue 11

Nov. 2020

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LI Zhirong, ZHANG Yulei, YUAN Jianfei, WANG Shengqiang. Deformation and payload of thin circular plates subjected to internal explosion[J]. Explosion And Shock Waves, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045

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LI Zhirong, ZHANG Yulei, YUAN Jianfei, WANG Shengqiang. Deformation and payload of thin circular plates subjected to internal explosion[J]. Explosion And Shock Waves, 2020, 40(11): 113101. doi: 10.11883/bzycj-2020-0045

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Deformation and payload of thin circular plates subjected to internal explosion

doi: 10.11883/bzycj-2020-0045

Xi’an Modern Chemistry Research Institute, Xi’an 710065, Shaanxi, China

Received Date: 2020-02-26
Rev Recd Date: 2020-06-29
Publish Date: 2020-11-05

Abstract

Abstract

In order to study the relationship between the failure and action loading characteristics of thin circular plates subjected to internal explosion, the experiments on aluminum and steel thin circular plates were carried out in a double-cylinder device. The failure modes and the specific impulse characteristics of the circular plates were analyzed. Based on the principle of equal loading under the same deformation, the effective specific impulse and action time under the ultimate deformation of the circular plate were obtained, and the prediction model of the circular plate deformation under this condition was proposed. The results show that, under the action of internal explosion load, the stress concentration zone is the boundary and geometric center of the thin circular plate, which leads to the failure mode of large plastic deformation, tensile tear and shear fracture. The specific impulse on the circular plate gradually changes from the initial wave growth to linear growth, and the effective specific impulse action time is in the range of 2.26–2.93 ms for a certain thermobaric explosive charge of 30–80 g making the steel circular plate with the thickness of 1 mm produce the ultimate deformation. The empirical results show that the deviation between the charge mass obtained by the prediction model and the experimental charge mass is less than 13.3%.
- internal explosion,
- thin circular plate,
- deformation mode,
- effective specific impulse,
- action time

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References(19)

References

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