Experimental study of deformation of steel boxsubjected to internal blast loading

Yao Shujian; Zhang Duo; Zheng Jian; Lu Fangyun; Yu Dapeng

doi:10.11883/1001-1455(2017)05-0964-05

Volume 37 Issue 5

Jul. 2017

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Yao Shujian, Zhang Duo, Zheng Jian, Lu Fangyun, Yu Dapeng. Experimental study of deformation of steel boxsubjected to internal blast loading[J]. Explosion And Shock Waves, 2017, 37(5): 964-968. doi: 10.11883/1001-1455(2017)05-0964-05

Citation:

Yao Shujian, Zhang Duo, Zheng Jian, Lu Fangyun, Yu Dapeng. Experimental study of deformation of steel boxsubjected to internal blast loading[J]. Explosion And Shock Waves, 2017, 37(5): 964-968. doi: 10.11883/1001-1455(2017)05-0964-05

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Experimental study of deformation of steel boxsubjected to internal blast loading

doi: 10.11883/1001-1455(2017)05-0964-05

College of Science, National University of Defense Technology, Changsha 410073, Hunan, China

Received Date: 2016-01-11
Rev Recd Date: 2016-06-07
Publish Date: 2017-09-25

Abstract

Abstract

Damage could occur to a more severe degree in an internal blast than in an air blast with respect to box-shaped structures. In the present study, a blast experiment was performed using 98.4, 194.7 and 355.8 g TNT explosives, respectively on three box-shaped specimens 600 mm in length and 4 mm in plate-thickness, to obtain their deformation features and observe the outward bulges at the center of their plate wall. It was found that the central deflection of the wall increases with the increase of the TNT mass. An empirical equation is proposed by fitting the linear relationship of the deflection thickness ratio and the TNT mass. The dynamic response of the wall was analyzed using the 3D digital image correlation (DIC) technique. The outward bulge was produced in the wall center after the explosion and at the same time the deflection increased with time passing by and the deformation propagated towards the wall edge all around. After the deflection reached the maximum value, the deformation of the wall experienced several oscillations.
- plastic deformation feature,
- digital image correlation,
- steel box,
- internal blast

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References(18)

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