Publication detail
Dislocation tri-material solution in the analysis of bridged crack in anisotropic bimaterial half-space
PROFANT, T. ŠEVEČEK, O. KOTOUL, M. VYSLOUŽIL, T.
Czech title
Dislocation tri-material solution in the analysis of bridged crack in anisotropic bimaterial half-space
English title
Dislocation tri-material solution in the analysis of bridged crack in anisotropic bimaterial half-space
Type
journal article - other
Language
en
Original abstract
The problem of an edge-bridged crack terminating perpendicular to a bimaterial interface in a half- space is analyzed for a general case of elastic anisotropic bimaterials and specialized for the case of orthotropic bimaterials. The edge crack lies in the surface layer of thickness h bonded to semi-infinite substrate. It is assumed that long fibres bridge the crack. Bridging model follows from the assumption of "large" slip lengths adjacent to the crack faces and neglect of initial stresses. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. With respect to the bridged crack problems in finite dissimilar bodies, the reciprocal theorem ( – integral) is demonstrated as to compute, in the present context, the generalized stress intensity factor through the remote stress and displacement field for a particular specimen geometry and boundary conditions using FEM. Also the application of the configurational force mechanics is discussed within the context of the investigated problem.
Czech abstract
The problem of an edge-bridged crack terminating perpendicular to a bimaterial interface in a half- space is analyzed for a general case of elastic anisotropic bimaterials and specialized for the case of orthotropic bimaterials. The edge crack lies in the surface layer of thickness h bonded to semi-infinite substrate. It is assumed that long fibres bridge the crack. Bridging model follows from the assumption of "large" slip lengths adjacent to the crack faces and neglect of initial stresses. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. With respect to the bridged crack problems in finite dissimilar bodies, the reciprocal theorem ( – integral) is demonstrated as to compute, in the present context, the generalized stress intensity factor through the remote stress and displacement field for a particular specimen geometry and boundary conditions using FEM. Also the application of the configurational force mechanics is discussed within the context of the investigated problem.
English abstract
The problem of an edge-bridged crack terminating perpendicular to a bimaterial interface in a half- space is analyzed for a general case of elastic anisotropic bimaterials and specialized for the case of orthotropic bimaterials. The edge crack lies in the surface layer of thickness h bonded to semi-infinite substrate. It is assumed that long fibres bridge the crack. Bridging model follows from the assumption of "large" slip lengths adjacent to the crack faces and neglect of initial stresses. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. With respect to the bridged crack problems in finite dissimilar bodies, the reciprocal theorem ( – integral) is demonstrated as to compute, in the present context, the generalized stress intensity factor through the remote stress and displacement field for a particular specimen geometry and boundary conditions using FEM. Also the application of the configurational force mechanics is discussed within the context of the investigated problem.
Keywords in Czech
anisotropic bimaterials, generalized stress intensity factor, FEM, reciprocal theorem, distributed dislocations technique, bridged crack
Keywords in English
anisotropic bimaterials, generalized stress intensity factor, FEM, reciprocal theorem, distributed dislocations technique, bridged crack
RIV year
2007
Released
31.12.2007
ISSN
0376-9429
Journal
INTERNATIONAL JOURNAL OF FRACTURE
Volume
147
Number
4
Pages from–to
199–217
Pages count
19
BIBTEX
@article{BUT44702,
author="Tomáš {Profant} and Oldřich {Ševeček} and Michal {Kotoul} and Tomáš {Vysloužil},
title="Dislocation tri-material solution in the analysis of bridged crack in anisotropic bimaterial half-space",
journal="INTERNATIONAL JOURNAL OF FRACTURE",
year="2007",
volume="147",
number="4",
month="December",
pages="199--217",
issn="0376-9429"
}