Effect of micro-structure on the strain rate of cellular materials

Wang Peng-fei; Xu Song-lin; Li Zhi-bin; Hu Shi-sheng

doi:10.11883/1001-1455(2014)03-0285-07

Volume 34 Issue 3

Aug. 2014

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Wang Peng-fei, Xu Song-lin, Li Zhi-bin, Hu Shi-sheng. Effect of micro-structure on the strain rate of cellular materials[J]. Explosion And Shock Waves, 2014, 34(3): 285-291. doi: 10.11883/1001-1455(2014)03-0285-07

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Effect of micro-structure on the strain rate of cellular materials

doi: 10.11883/1001-1455(2014)03-0285-07

CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, Anhui, China

Received Date: 2012-11-13
Rev Recd Date: 2013-04-25
Publish Date: 2014-05-25

Abstract

Abstract

The strain-rate effects of ring structure are discussed by the numerical simulation method.The calculated results show that the buckling instability exists in both the ring structure and the folded plate structure.For the ring structure, there is a strain-rate effect at the post-buckling stage, but the degree of the strain-rate effect is not more obvious than that for the folded plate structure.In addition, the collapse instability is more obvious, and the strain-rate effect is more sensitive for a thinner thickness ring structure during the compression process.For the thicker thickness, it is difficult to buckling and the strain-rate effect is insensitive during the compression process.The model of circular honeycomb structure is created to indicate that the bucking also exists and is sensitive to the strain rate.
- solid mechanics,
- strain rate,
- stress uniform,
- micro-structure,
- buckling,
- cellular material

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References(13)

References

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