Expansion fracture mode of 7075 aluminum ring under electromagnetic loading

YANG Chen; LIU Mingtao; TANG Tiegang; GUO Zhaoliang; FAN Cheng

doi:10.11883/bzycj-2021-0005

Volume 41 Issue 3

Mar. 2021

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YANG Chen, LIU Mingtao, TANG Tiegang, GUO Zhaoliang, FAN Cheng. Expansion fracture mode of 7075 aluminum ring under electromagnetic loading[J]. Explosion And Shock Waves, 2021, 41(3): 032201. doi: 10.11883/bzycj-2021-0005

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YANG Chen, LIU Mingtao, TANG Tiegang, GUO Zhaoliang, FAN Cheng. Expansion fracture mode of 7075 aluminum ring under electromagnetic loading[J]. Explosion And Shock Waves, 2021, 41(3): 032201. doi: 10.11883/bzycj-2021-0005

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Expansion fracture mode of 7075 aluminum ring under electromagnetic loading

doi: 10.11883/bzycj-2021-0005

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2021-01-05
Rev Recd Date: 2021-02-08

Available Online: 2021-03-05

Publish Date: 2021-03-10

Abstract

Abstract

The transition of fracture mode of 7075 aluminum ring was discovered by using electromagnetic expansion rings technique. The experimental results show that the fracture of the aluminum ring is affected by the maximum normal stress criterion at low strain rate, and tensile fracture easily occurs. Under the high strain rate, the fracture of the aluminum ring is affected by the maximum shear stress criterion and is prone to shear fracture. At the normal strain rate, the fracture of the aluminum ring is affected by both the maximum normal stress and the maximum shear stress criterion, resulting in a mixed fracture mode of tensile and shear fractures. And with the increase of strain rate, the number of fragments in the aluminum ring first increases, then decreases, and then increases again. These inflection points are the transition points of the fracture modes.
- fracture mode transition,
- electromagnetic loading technology,
- strain rate effect,
- 7075 aluminum

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References(16)

References

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