SHPB technique for the dynamic stress-strain curve measurements of casting explosive

Li Ke-wu; Zhao Feng; Fu Hua

doi:10.11883/1001-1455(2015)06-0846-06

Volume 35 Issue 6

Nov. 2015

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Li Ke-wu, Zhao Feng, Fu Hua. SHPB technique for the dynamic stress-strain curve measurements of casting explosive[J]. Explosion And Shock Waves, 2015, 35(6): 846-851. doi: 10.11883/1001-1455(2015)06-0846-06

Citation:

Li Ke-wu, Zhao Feng, Fu Hua. SHPB technique for the dynamic stress-strain curve measurements of casting explosive[J]. Explosion And Shock Waves, 2015, 35(6): 846-851. doi: 10.11883/1001-1455(2015)06-0846-06

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SHPB technique for the dynamic stress-strain curve measurements of casting explosive

doi: 10.11883/1001-1455(2015)06-0846-06

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

Received Date: 2014-05-07
Rev Recd Date: 2014-09-03
Publish Date: 2015-12-10

Abstract

Abstract

It is generally impossible to obtain valid constitutive data of casting explosive by conventional SHPB tests, due to its low impedance and soft texture and to its inability to attain uniformity required. A modified SHPB method is therefore proposed to get reliable dynamic response data of casting explosive. The piezoelectricity quartz gauges have been used to directly measure dynamic stress processing of specimen. This modified data processing method has been adopted, which can eliminate the effect caused by stress non-uniformity. By using the modified data processing, the signal failure problem caused by long pulse incident can also be resolved. With the modified SHPB method, satisfactory results have been obtained in processing casting explosive.
- mechanics of explosion,
- stress non-uniformness,
- SHPB tests,
- casting explosive,
- low impedance material

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References(12)

References

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