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
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.
收稿日期: 2013-11-13
出版日期: 2014-02-28
:
64.60.av
(Cracks, sandpiles, avalanches, and earthquakes)
62.20.fq
(Plasticity and superplasticity)
62.20.F-
(Deformation and plasticity)
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2014, Vol. 31 
