Role of lattice discreteness on brittle fracture: Atomistic simulations versus analytical models (Articolo in rivista)

Type
Label
  • Role of lattice discreteness on brittle fracture: Atomistic simulations versus analytical models (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.73.104111 (literal)
Alternative label
  • Ippolito, M; Mattoni, A; Colombo, L; Pugno, N (2006)
    Role of lattice discreteness on brittle fracture: Atomistic simulations versus analytical models
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Ippolito, M; Mattoni, A; Colombo, L; Pugno, N (literal)
Pagina inizio
  • 104111 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v73/i10/e104111 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 10 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Sardinian Laboratory for Computational Materials Science (SLACS, INFM-CNR); Department of Physics, University of Cagliari, Cittadella Universitaria, I-09042 Monserrato (Ca), Italy; Department of Structural Engineering and Geotechnics, Politecnico di Torino, Torino, Italy (literal)
Titolo
  • Role of lattice discreteness on brittle fracture: Atomistic simulations versus analytical models (literal)
Abstract
  • By means of thorough atomistic simulations an energy-based theory, named quantized fracture mechanics, is commented and validated. This approach modifies continuum linear elastic fracture mechanics by introducing the hypothesis of discrete crack propagation, taking into account the discreteness of the crystal lattice. We investigate at an atomistic level the crack energy resistance for a matrix of silicon carbide with an isolated crack, and the effect on the stress at the crack tip due to a second phase particle. In both cases our results show that, while atomistic simulations provide the most basic level of understanding of mechanical behavior in nanostructured brittle materials, quantized fracture mechanics is able to effectively incorporate the main lattice-related feature, thus enlarging the realm of continuum modeling. (literal)
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