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:
-
- 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}
}
Web of Science
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