1/f noise and avalanche scaling in plastic deformation
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© 2006 American Physical Society (APS). This is the accepted version of the following article: Laurson, L. & Alava, Mikko J. 2006. 1/f noise and avalanche scaling in plastic deformation. Physical Review E. Volume 74, Issue 6. 066106/1-5. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.74.066106, which has been published in final form at http://journals.aps.org/pre/abstract/10.1103/PhysRevE.74.066106.
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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066106/1-5
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Physical Review E, Volume 74, Issue 6
Abstract
We study the intermittency and noise of dislocation systems undergoing shear deformation. Simulations of a simple two-dimensional discrete dislocation dynamics model indicate that the deformation rate exhibits a power spectrum scaling of the type 1/fα. The noise exponent is far away from a Lorentzian, with α≈1.5. This result is directly related to the way the durations of avalanches of plastic deformation activity scale with their size.Description
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Laurson, L. & Alava, Mikko J. 2006. 1/f noise and avalanche scaling in plastic deformation. Physical Review E. Volume 74, Issue 6. 066106/1-5. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.74.066106.