Detalles del recurso
Pertenece a:
E-PrintsUCM
Descripción: A novel analysis of homogeneous nucleation of dislocations in sheared two-dimensional
crystals described by periodized-discrete-elasticity models is presented. When the crystal is
sheared beyond a critical strain F = Fc, the strained dislocation-free state becomes unstable
via a subcritical pitchfork bifurcation. Selecting a fixed final applied strain Ff >Fc, different
simultaneously stable stationary configurations containing two or four edge dislocations may be
reached by setting F = Ff t/tr during different time intervals tr. At a characteristic time after tr,
one or two dipoles are nucleated, split, and the resulting two edge dislocations move in opposite
directions to the sample boundary. Numerical continuation shows how configurations with different
numbers of edge dislocation pairs emerge as bifurcations from the dislocation-free state.
Autor(es): Plans, I. - Carpio Rodríguez, Ana María - Bonilla , L.L. -
Id.: 55211141
Idioma:
eng
-
Versión: 1.0
Estado: Final
Tipo: application/pdf -
Palabras clave: Física de materiales -
Tipo de recurso:
Artículo
- PeerReviewed
-
Tipo de Interactividad: Expositivo
Nivel de Interactividad: muy bajo
Audiencia:
Estudiante
- Profesor
- Autor
-
Estructura: Atomic
Coste: no
Copyright: sí
: info:eu-repo/semantics/embargoedAccess
Formatos: application/pdf -
Requerimientos técnicos: Browser: Any -
Relación:
[References] http://iopscience.iop.org/0295-5075/81/3/36001
[References] http://eprints.ucm.es/14943/
Fecha de contribución: 21-abr-2012
Contacto:
Localización:
