A freezing recovery method for metallic cylinder shells under internal explosive loading

LUO Yusong; LI Weibing; CHEN Zhichuang; WANG Xiaoming; LI Wenbin

doi:10.11883/bzycj-2020-0041

Volume 40 Issue 10

Oct. 2020

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LUO Yusong, LI Weibing, CHEN Zhichuang, WANG Xiaoming, LI Wenbin. A freezing recovery method for metallic cylinder shells under internal explosive loading[J]. Explosion And Shock Waves, 2020, 40(10): 104101. doi: 10.11883/bzycj-2020-0041

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LUO Yusong, LI Weibing, CHEN Zhichuang, WANG Xiaoming, LI Wenbin. A freezing recovery method for metallic cylinder shells under internal explosive loading[J]. Explosion And Shock Waves, 2020, 40(10): 104101. doi: 10.11883/bzycj-2020-0041

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A freezing recovery method for metallic cylinder shells under internal explosive loading

doi: 10.11883/bzycj-2020-0041

1.
Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China

Received Date: 2020-02-24
Rev Recd Date: 2020-06-29
Publish Date: 2020-10-05

Abstract

Abstract

Aimed to the recovery of expansive metal cylindrical shells subjected to internal explosive loading, the freezing recovery test method was developed to realize the freezing recovery of the metallic cylindrical shells at different moments after detonation. Based on the integrated shell, three improved structures were proposed, and the expansion and fracture processes of the four cylindrical shell structures under internal explosive loading were numerically simulated. It was found that the two-stage shell was the most beneficial to reduce the influence of the non-initiation end on the middle shell expected to be recovered. According to the selected optimal shell structure and the shape expansion characteristics of metal cylindrical shells at different moments after detonation, the freezing recovery devices matching with the shells were designed, and the freezing recovery tests were carried out. The test results show that the developed freezing recovery test method can realize the recovery of the expanded metallic cylindrical shells. The axial and radial dimensions of the recovery shells are in good agreement with the ideal design values, and the overall error can be controlled within 10%.
- internal explosive loading,
- metal cylindrical shell,
- expansion and fracture,
- freezing recovery test

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References(19)

References

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