RT Journal Article
T1 Discrete models of dislocations and their motion in cubic crystals
A1 Carpio Rodríguez, Ana María
A1 Bonilla, L.L.
AB A discrete model describing defects in crystal lattices and having the standard linear anisotropic elasticity as its continuum limit is proposed. The main ingredients entering the model are the elastic stiffness constants of the material and a dimensionless periodic function that restores the translation invariance of the crystal and influences the Peierls stress. Explicit expressions are given for crystals with cubic symmetry: sc (simple cubic), fcc, and bcc. Numerical simulations of this model with conservative or damped dynamics illustrate static and moving-edge and screw dislocations, and describe their cores and profiles. Dislocation loops and dipoles are also numerically observed. Cracks can be created and propagated by applying a sufficient load to a dipole formed by two edge dislocations.
PB American Physical Society
SN 1098-0121
YR 2005
FD 2005
LK https://hdl.handle.net/20.500.14352/49868
UL https://hdl.handle.net/20.500.14352/49868
LA eng
NO Carpio, A., y L. L. Bonilla. «Discrete Models of Dislocations and Their Motion in Cubic Crystals». Physical Review B, vol. 71, n.o 13, abril de 2005, p. 134105. DOI.org (Crossref), https://doi.org/10.1103/PhysRevB.71.134105.
DS Docta Complutense
RD 15 abr 2025