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Title: Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale

Abstract

We demonstrate, through three-dimensional discrete dislocation dynamics simulations, that the complex dynamical response of nano- and microcrystals to external constraints can be tuned. Under load rate control, strain bursts are shown to exhibit scale-free avalanche statistics, similar to critical phenomena in many physical systems. For the other extreme of displacement rate control, strain burst response transitions to quasiperiodic oscillations, similar to stick-slip earthquakes. External load mode control is shown to enable a qualitative transition in the complex collective dynamics of dislocations from self-organized criticality to quasiperiodic oscillations.

Authors:
 [1];  [1];  [1]
  1. Univ. of California, Los Angeles, CA (United States). Mechanical and Aerospace Engineering Dept.
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1536432
Alternate Identifier(s):
OSTI ID: 1328249
Grant/Contract Number:  
FG02-03ER54708
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 15; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Cui, Yinan, Po, Giacomo, and Ghoniem, Nasr. Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale. United States: N. p., 2016. Web. doi:10.1103/physrevlett.117.155502.
Cui, Yinan, Po, Giacomo, & Ghoniem, Nasr. Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale. United States. https://doi.org/10.1103/physrevlett.117.155502
Cui, Yinan, Po, Giacomo, and Ghoniem, Nasr. 2016. "Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale". United States. https://doi.org/10.1103/physrevlett.117.155502. https://www.osti.gov/servlets/purl/1536432.
@article{osti_1536432,
title = {Controlling Strain Bursts and Avalanches at the Nano- to Micrometer Scale},
author = {Cui, Yinan and Po, Giacomo and Ghoniem, Nasr},
abstractNote = {We demonstrate, through three-dimensional discrete dislocation dynamics simulations, that the complex dynamical response of nano- and microcrystals to external constraints can be tuned. Under load rate control, strain bursts are shown to exhibit scale-free avalanche statistics, similar to critical phenomena in many physical systems. For the other extreme of displacement rate control, strain burst response transitions to quasiperiodic oscillations, similar to stick-slip earthquakes. External load mode control is shown to enable a qualitative transition in the complex collective dynamics of dislocations from self-organized criticality to quasiperiodic oscillations.},
doi = {10.1103/physrevlett.117.155502},
url = {https://www.osti.gov/biblio/1536432}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 15,
volume = 117,
place = {United States},
year = {Fri Oct 07 00:00:00 EDT 2016},
month = {Fri Oct 07 00:00:00 EDT 2016}
}

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Free Publicly Available Full Text
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Cited by: 40 works
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Works referenced in this record:

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Works referencing / citing this record:

First-principles Modeling of Thermal Transport in Materials: Achievements, Opportunities, and Challenges
journal, December 2019


Size effects of micrometer-scaled metals—the search continues for materials containing real microstructures
journal, April 2017


Rotatable precipitates change the scale-free to scale dependent statistics in compressed Ti nano-pillars.
text, January 2019


Dislocations and Plastic Deformation in MgO Crystals: A Review
journal, May 2018


Dislocations and Plastic Deformation in MgO Crystals: A Review
text, January 2018


Avalanches and Plastic Flow in Crystal Plasticity: An Overview
text, January 2017


Discrete shear band plasticity through dislocation activities in body-centered cubic tungsten nanowires
journal, March 2018


Rotatable precipitates change the scale-free to scale dependent statistics in compressed Ti nano-pillars.
text, January 2019