Deformation behavior of WELDOX 700E steel subjected to TNT air-blast loading

YAN Yongming; YU Wenchao; HE Xiaofei; SUN Ting; SHI Jie

doi:10.11883/bzycj-2019-0430

Volume 40 Issue 7

Jul. 2020

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YAN Yongming, YU Wenchao, HE Xiaofei, SUN Ting, SHI Jie. Deformation behavior of WELDOX 700E steel subjected to TNT air-blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 073102. doi: 10.11883/bzycj-2019-0430

Citation:

YAN Yongming, YU Wenchao, HE Xiaofei, SUN Ting, SHI Jie. Deformation behavior of WELDOX 700E steel subjected to TNT air-blast loading[J]. Explosion And Shock Waves, 2020, 40(7): 073102. doi: 10.11883/bzycj-2019-0430

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Deformation behavior of WELDOX 700E steel subjected to TNT air-blast loading

doi: 10.11883/bzycj-2019-0430

Institute for Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China

Received Date: 2019-11-11
Rev Recd Date: 2020-02-13
Publish Date: 2020-07-01

Abstract

Abstract

The deformation behavior of 8 mm and 12 mm WELDOX 700E steel, at stand-off distance 250 mm, subjected to air-blast loading by 6 kg and 10 kg spherical TNT, was investigated. The simulation model of WELDOX 700E steel subjected to air-blast loading is established using ABAQUS. The results indicate that strength is one of key factors affecting the deformation behavior of WELDOX 700E steel. High strength WELDOX 700E steel presents uniform arch deformation under spherical TNT air blast loading. The maximum dynamic displacement, permanent deflection and rebound of 8 mm WELDOX 700E steel midpoint subjected to 6 kg TNT are 144 mm, 124 mm and 21 mm, respectively. The maximum dynamic displacement, permanent deflection and rebound of 12 mm WELDOX 700E steel midpoint subjected to 10 kg TNT are 166 mm, 143 mm and 23 mm, respectively. Without considering the overall deviation of experimental setup, the simulation results can accurately reflect the deformation behavior of WELDOX 700E steel subjected to spherical TNT air blast loading. Under air-blast loading, the thickness of WELDOX 700E steel decreases significantly, accompanied by strain hardening behavior. Strain hardening behavior is the dislocation growth in martensite of WELDOX 700E steel. Compared with the edge, the dislocation density in the center of 8 mm and 12 mm WELDOX 700E steel plate increases by 80.31% and 151.76%, respectively.
- WELDOX 700E steel,
- spherical TNT,
- high strength steel,
- deformation

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References(14)

References

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