Dynamic response of sandwich tubes with graded foam aluminum cores under internal blast loading

ZHANG Pengfei; LIU Zhifang; LI Shiqiang

doi:10.11883/bzycj-2019-0418

Volume 40 Issue 7

Jul. 2020

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ZHANG Pengfei, LIU Zhifang, LI Shiqiang. Dynamic response of sandwich tubes with graded foam aluminum cores under internal blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 071402. doi: 10.11883/bzycj-2019-0418

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ZHANG Pengfei, LIU Zhifang, LI Shiqiang. Dynamic response of sandwich tubes with graded foam aluminum cores under internal blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 071402. doi: 10.11883/bzycj-2019-0418

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Dynamic response of sandwich tubes with graded foam aluminum cores under internal blast loading

doi: 10.11883/bzycj-2019-0418

Institute of Applied Mechanics, College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received Date: 2019-10-29
Rev Recd Date: 2020-02-12

Available Online: 2020-05-25

Publish Date: 2020-07-01

Abstract

Abstract

Dynamic response of sandwich tubes subjected to blast loading is investigated numerically. The 3D-Voronoi technology is introduced to establish three-dimensional mesoscopic finite element model of aluminum foam. The influences of the thickness of inner and outer tubes, the relative density of foam core and the core gradient on the blast resistance and energy absorption of the sandwich tubes are analyzed and compared with the double circular tubes with air core. The results show that the relative density of foam materials can be controlled by changing the size and wall thickness of cell, and the calculation results of the sandwich tube constructed by two methods are consistent. The increase of the inner tube thickness can effectively reduce the plastic deformation of outer tube and weaken the energy absorption of foam core. Foam filling is of benefit to reduce the plastic deformation of inner tube and the blast resistance of positive gradient is better than that of negative gradient and uniform core.
- 3D-Voronoi,
- deformation,
- foam aluminum,
- sandwich tube

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References(15)

References

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