Dynamic response of sandwich beam with foldable core under blast loading

ZHANG Peiwen; LI Shiqiang; WANG Zhihua; ZHAO Longmao

doi:10.11883/bzycj-2017-0017

Volume 38 Issue 1

Nov. 2017

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ZHANG Peiwen, LI Shiqiang, WANG Zhihua, ZHAO Longmao. Dynamic response of sandwich beam with foldable core under blast loading[J]. Explosion And Shock Waves, 2018, 38(1): 140-147. doi: 10.11883/bzycj-2017-0017

Citation:

ZHANG Peiwen, LI Shiqiang, WANG Zhihua, ZHAO Longmao. Dynamic response of sandwich beam with foldable core under blast loading[J]. Explosion And Shock Waves, 2018, 38(1): 140-147. doi: 10.11883/bzycj-2017-0017

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Dynamic response of sandwich beam with foldable core under blast loading

doi: 10.11883/bzycj-2017-0017

ZHANG Peiwen¹,
LI Shiqiang^{1, 2, 3},
WANG Zhihua^{1, 3
,
,},
ZHAO Longmao^{1, 3}

1.
Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
2.
State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, Hunan, China
3.
Shanxi Key Laboratory of Material Strength and Structural Impact, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received Date: 2017-01-13
Rev Recd Date: 2017-03-22
Publish Date: 2018-01-25

Abstract

Abstract

In this study four different honeycomb cells were fabricated by changing the original folding angle based on the Tachi-origami pattern that is at present being studied widely, and sandwich beams were made from them by arranging them specifically. The quasi-static mechanical response of the foldable core and dynamic response of the sandwich beam with different foldable core shapes was investigated using the commercial package ABAQUS/explicit. The out-plane Poisson ratio's variation of the foldable core, the back-sheet deflection and the plastic dissipation energy of the sandwich beam were analyzed and compared with the monolithic beam. The anti-explosive performance of the sandwich beams was evaluated by the maximum deflection of the back-sheet. The results show that there is a negative Poisson ratio's performance of the foldable core under quasi-static loading. The blast resistance of the sandwich beam is better than that of the monolithic one. The effect of the original folding angle on the dynamic response is very obvious for the curved web honeycomb. The blast-resistant performance decreases gradually as the original folding angle increases. The blast resistance of the sandwich beam with a straight web honeycomb core is comparatively the worst among the four honeycomb cores.
- foldable curved web honeycomb,
- sandwich beam,
- dynamic response,
- energy absorption

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References(18)

References

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