An SHPB-based experimental technique for dynamic fragmentations of expanding rings

Zheng Yu-xuan; Zhou Feng-hua; Hu Shi-sheng

doi:10.11883/1001-1455(2014)04-0483-06

Volume 34 Issue 4

Sep. 2014

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Zheng Yu-xuan, Zhou Feng-hua, Hu Shi-sheng. An SHPB-based experimental technique for dynamic fragmentations of expanding rings[J]. Explosion And Shock Waves, 2014, 34(4): 483-488. doi: 10.11883/1001-1455(2014)04-0483-06

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Zheng Yu-xuan, Zhou Feng-hua, Hu Shi-sheng. An SHPB-based experimental technique for dynamic fragmentations of expanding rings[J]. Explosion And Shock Waves, 2014, 34(4): 483-488. doi: 10.11883/1001-1455(2014)04-0483-06

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An SHPB-based experimental technique for dynamic fragmentations of expanding rings

doi: 10.11883/1001-1455(2014)04-0483-06

1.
MOE Key Laboratory of Impact and Safety Engineering, Ningbo University, Ningbo 315211, Zhejiang, China
2.
CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, Anhui, China

Funds: Supported bythe National Natural Science Foundation of China (10972108)

More Information

Corresponding author: Zhou Feng-hua, zhou@nbu.edu.cn
Received Date: 2012-09-24
Rev Recd Date: 2013-01-22
Publish Date: 2014-07-25

Abstract

Abstract

Based on the split Hopkinson pressure bar (SHPB), a new loading experimental technology was developed for conducting expanding ring test which is used to study the dynamic tensile deformation and the fracture (fragmentation) properties of materials. The loading fixture includes a hydraulic cylinder filled with incompressible fluid, which is pushed by a piston connected to the input bar. As the liquid is driven, it expands the metallic ring specimen in the radial direction. The approximately incompressible property of the liquid makes it possible to drive the specimen in very high radial velocity by low velocity movement of piston, according to the large sectional area ratio of the cylinder to specimen. The ring specimens of LY12 aluminum alloy were tested by this experimental technology. The results show apparent increase of the fragment number and the fracture strain of the specimen with the increase of the impact velocity.
- solid mechanics,
- expanding ring,
- SHPB,
- dynamic tension,
- fragmentation,
- apparent fracture strain

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References(13)

References

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