Mechanism of expanding fracture of 45 steel cylinder shells driven by modified SHPB

Ye Xiang-ping; Li Ying-lei; Zhang Zu-gen

doi:10.11883/1001-1455(2014)03-0322-06

Volume 34 Issue 3

Aug. 2014

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Ye Xiang-ping, Li Ying-lei, Zhang Zu-gen. Mechanism of expanding fracture of 45 steel cylinder shells driven by modified SHPB[J]. Explosion And Shock Waves, 2014, 34(3): 322-327. doi: 10.11883/1001-1455(2014)03-0322-06

Citation:

Ye Xiang-ping, Li Ying-lei, Zhang Zu-gen. Mechanism of expanding fracture of 45 steel cylinder shells driven by modified SHPB[J]. Explosion And Shock Waves, 2014, 34(3): 322-327. doi: 10.11883/1001-1455(2014)03-0322-06

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Mechanism of expanding fracture of 45 steel cylinder shells driven by modified SHPB

doi: 10.11883/1001-1455(2014)03-0322-06

National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, Sichuan, China

Received Date: 2012-11-25
Rev Recd Date: 2013-09-15
Publish Date: 2014-05-25

Abstract

Abstract

Cylinder shells of 45 steel were freezing recovery experimented using a modified SHPB device to observe the whole fracture process, including crack initiation, crack propagation conditions and final fracture modes.By microanalysing the internal structures of the recovery samples, the whole fracture process was observed, and some conclusions were obtained:the tensile and shear fracture mechanism played a dominant role in the dynamic fracture process of cylinder shells, cracks initiated from the outer wall, then propagated into inner wall, the fracture mode changed from tensile-shear mixing to pure shear with increasing load strain rate.There were some differences between these experimental results and the results loaded by detonation, which need us to further study, that the fracture modes would change from tensile to pure shear in these experimental results, rather than adiabatic shear in detonations with increasing strain rate
- solid mechanics,
- mechanism of fracture,
- SHPB,
- metal cylinder shells,
- dynamic expanding fracture

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References(10)

References

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