Effect of disorder and notches on crack roughness
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© 2007 American Physical Society (APS). This is the accepted version of the following article: Nukala, Phani K. V. V. & Zapperi, Stefano & Alava, Mikko J. & Simunovic, Srdan. 2007. Effect of disorder and notches on crack roughness. Physical Review E. Volume 76, Issue 5. 056111/1-6. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.76.056111, which has been published in final form at http://journals.aps.org/pre/abstract/10.1103/PhysRevE.76.056111.
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School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2007
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Language
en
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056111/1-6
Series
Physical Review E, Volume 76, Issue 5
Abstract
We analyze the effect of disorder and notches on crack roughness in two dimensions. Our simulation results based on large system sizes and extensive statistical sampling indicate that the crack surface exhibits a universal local roughness of ζloc=0.71 and is independent of the initial notch size and disorder in breaking thresholds. The global roughness exponent scales as ζ=0.87 and is also independent of material disorder. Furthermore, we note that the statistical distribution of crack profile height fluctuations is also independent of material disorder and is described by a Gaussian distribution, albeit deviations are observed in the tails.Description
Keywords
crack roughness, disorder, notches
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Citation
Nukala, Phani K. V. V. & Zapperi, Stefano & Alava, Mikko J. & Simunovic, Srdan. 2007. Effect of disorder and notches on crack roughness. Physical Review E. Volume 76, Issue 5. 056111/1-6. ISSN 1539-3755 (printed). DOI: 10.1103/physreve.76.056111.