Deformation and stress nonuniformity of aluminum foam under different impact speeds

Zhang Chao; Xu Song-lin; Wang Peng-fei; Zhang Lei

doi:10.11883/1001-1455(2015)04-0567-09

Volume 35 Issue 4

Jun. 2016

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Zhang Chao, Xu Song-lin, Wang Peng-fei, Zhang Lei. Deformation and stress nonuniformity of aluminum foam under different impact speeds[J]. Explosion And Shock Waves, 2015, 35(4): 567-575. doi: 10.11883/1001-1455(2015)04-0567-09

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Zhang Chao, Xu Song-lin, Wang Peng-fei, Zhang Lei. Deformation and stress nonuniformity of aluminum foam under different impact speeds[J]. Explosion And Shock Waves, 2015, 35(4): 567-575. doi: 10.11883/1001-1455(2015)04-0567-09

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Deformation and stress nonuniformity of aluminum foam under different impact speeds

doi: 10.11883/1001-1455(2015)04-0567-09

CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Scienceand Technology of China, Hefei 230026, Anhui, China

Received Date: 2014-03-31
Rev Recd Date: 2014-05-14
Publish Date: 2015-07-25

Abstract

Abstract

A split Hopkinson pressure bar apparatus (SHPB) and a modified SHPB apparatus were employed to investigate the dynamic responses of aluminum foam. During the experiments, a high-speed camera was used to record the deformation process of specimens. Three deformation patterns were observed with the increase of the impact speed. All photographs recorded were analyzed by the digital imaging correlation method. The analytical results were used to illustrate the strain field progressing and the stress nonuniformity of these three deformation patterns. And they are helpful in the revealing of the intrinsic mechanisms of these three deformation patterns. This method offers a new and reliable method to study the influence of deformation nonuniformity on dynamic mechanical behaviors of aluminum foam under different impact speeds.
- solid mechanics,
- stress nonuniformity,
- split Hopkinson pressure bar,
- aluminum foam,
- deformation nonuniformity,
- digital imaging correlation method,
- impact speed

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References(16)

References

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