Calculation of K-factor and T-stress for crack at anisotropic bimaterials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F06%3APU62598" target="_blank" >RIV/00216305:26210/06:PU62598 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Calculation of K-factor and T-stress for crack at anisotropic bimaterials

Original language description

The problem of a crack terminating perpendicular to a bimaterial interface is analyzed for the most general case of elastic anisotropy. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. A system of simultaneous functional equations is obtained that enables to find the singularity exponent . The reciprocal theorem ( - integral) is used to compute the generalized stress intensity factor through the remote stress and displacementfield for a particular specimen geometry and boundary conditions using FEM. The dislocation arrays technique is further used for the T-stress determination. First, all but the singular part of the desired fundamental dislocation solution is constructedusingFEM and used as the regular part of the kernel of the singular integral equation. The integral equation is solved for the dislocation density that allows finding the T-stress.

Czech name

Vypočet K-faktoru a T-napětí pro anisotropní bimateriály

Czech description

The problem of a crack terminating perpendicular to a bimaterial interface is analyzed for the most general case of elastic anisotropy. The crack is modelled by means of continuous distribution of dislocations, which is assumed to be singular at the crack tip. A system of simultaneous functional equations is obtained that enables to find the singularity exponent . The reciprocal theorem ( - integral) is used to compute the generalized stress intensity factor through the remote stress and displacementfield for a particular specimen geometry and boundary conditions using FEM. The dislocation arrays technique is further used for the T-stress determination. First, all but the singular part of the desired fundamental dislocation solution is constructedusingFEM and used as the regular part of the kernel of the singular integral equation. The integral equation is solved for the dislocation density that allows finding the T-stress.

Type

D - Article in proceedings

CEP classification

JK - Corrosion and material surfaces

OECD FORD branch

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Project

<a href="/en/project/GA101%2F05%2F0320" target="_blank" >GA101/05/0320: Solution of general stress concentrators in anisotropic heterogeneous media via combination of FEM and continuously distributed dislocation technique</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2006

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Fracture of Nano and Engineering Materials and Structures

ISBN

1-4020-4971-4

ISSN

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e-ISSN

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Number of pages

9

Pages from-to

879-887

Publisher name

Springer

Place of publication

Holandsko

Event location

Alexandroupolis

Event date

Jul 3, 2006

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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