Fluctuations of Global Energy Release and Crackling in Nominally Brittle Heterogeneous Fracture
| Autor: | Jonathan Barés, Daniel Bonamy, Davy Dalmas, M.L. Hattali |
|---|---|
| Přispěvatelé: | Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes (SPHYNX), Service de physique de l'état condensé (SPEC - UMR3680), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Surface du Verre et Interfaces (SVI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Saint-Gobain-Centre National de la Recherche Scientifique (CNRS), ANR-09-SYSC-0006,MEPHYSTAR,MEcanique et PHYsique STAtistique de la Rupture dans les matériaux fragiles hétérogènes(2009), Université Pierre et Marie Curie - Paris 6 (UPMC)-SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Range (particle radiation)
Statistical Mechanics (cond-mat.stat-mech) FOS: Physical sciences General Physics and Astronomy Fracture mechanics solid mechanics Mechanics [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] Power (physics) Fractal Brittleness Fracture crackling fractals Solid mechanics scaling laws Fracture (geology) [PHYS.COND.CM-SM]Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech] Condensed Matter - Statistical Mechanics Geology Mechanical energy |
| Zdroj: | Physical Review Letters Physical Review Letters, 2014, 113, pp.264301. ⟨10.1103/PhysRevLett.113.264301⟩ Physical Review Letters, American Physical Society, 2014, 113, pp.264301. ⟨10.1103/PhysRevLett.113.264301⟩ |
| ISSN: | 0031-9007 1079-7114 |
| Popis: | International audience; The temporal evolution of mechanical energy and spatially-averaged crack speed are both monitored in slowly fracturing artificial rocks. Both signals display an irregular burst-like dynamics, with power-law distributed fluctuations spanning a broad range of scales. Yet, the elastic power released at each time step is proportional to the global velocity all along the process, which enables defining a material-constant fracture energy. We characterize the intermittent dynamics by computing the burst statistics. This latter displays the scale-free features signature of crackling dynamics, in qualitative but not quantitative agreement with the depinning interface models derived for fracture problems. The possible sources of discrepancies are pointed out and discussed. |
| Databáze: | OpenAIRE |
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