| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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The Burst Time Duration in Micropillar Deformation |
| ZHANG Xu, SHANG Fu-Lin** |
State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049
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| Cite this article: |
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ZHANG Xu, SHANG Fu-Lin 2014 Chin. Phys. Lett. 31 026401 |
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Abstract Plastic flow of single crystal micropillars proceeds through a sequence of intermittent burst slips. The burst time durations are investigated based on an extended theoretical model which incorporates the observed power-law distribution of burst sizes in compression experiments of micropillars. The results show that the burst time durations exhibit a powerlaw behavior with an exponential cutoff, suggesting the same scaling behaviors as the burst sizes. In addition, the predicted scaling exponent is found to converge to a value of ～1.6. It is demonstrated that our results are consistent with the experimental data.
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Received: 13 November 2013
Published: 28 February 2014
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| PACS: |
64.60.av
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(Cracks, sandpiles, avalanches, and earthquakes)
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62.20.fq
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(Plasticity and superplasticity)
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62.20.F-
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(Deformation and plasticity)
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