Research into the Energy Output of Asymmetric Cylindrical Structure under Internal Explosion Loading

Liangliang Ding, Zhenduo Li, Fangyun Lu and Xiangyu Li
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Liangliang Ding: College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
Zhenduo Li: College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
Fangyun Lu: College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
Xiangyu Li: College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China

Energies, 2018, vol. 11, issue 4, 1-13

Abstract: The energy output characteristic of an asymmetric cylindrical structure under internal explosion loading has significant research value in the field of the national defense industry. This paper took the D-shaped structure as the research object. Three groups of experiments (D-90°, D-120°, D-150°) were carried out. The D-shaped structure showed that fragments are concentrated in the middle and are sparse on both sides. Moreover, the fragment density decreased with the increase of the azimuth angle. The fragment velocities, which were measured from high-speed photography and an oscilloscope, coincided well with each other, and decreased with an increase in the central angle. Compared with the cylindrical structure, the fragment energy gain of the D-shaped structure is significant; the total energy and energy density of the three D-shaped structures were very close to each other. This indicates that D-120° is the optimal solution among the three D-shaped structures and it can provide guidance for the future design of D-shaped structures to achieve higher energy output.

Keywords: energy output; asymmetric cylindrical structure; internal explosion loading; fragment velocity; spatial distribution of fragment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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