Crack propagation criteria for the crack terminating on the interface of a thin orthotropic layer and an orthotropic substrate.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F07%3APU67702" target="_blank" >RIV/00216305:26210/07:PU67702 - 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

Crack propagation criteria for the crack terminating on the interface of a thin orthotropic layer and an orthotropic substrate.

Original language description

The contribution discusses possible approach for the formulation of fracture criteria for the general stress concentrators - especially a surface crack terminating at the interface of two dissimilar orthotropic media. The classical differential analysisis unsuitable due to the discontinuity in the elastic properties which leads on the interface to a zero or infinite energy release rates. Theory of the Finite Fracture Mechanic is used to overcome this problem (crack increase of finite length is used instead of the infinitesimal one). The three possibilities of the crack propagation are taken into the consideration - crack deflection (single or double) and a penetration of the crack across the interface into the substrate. The so-called matched asymptotic procedure in combination with FEM is used for the calculation of appropriate changes of potential energy caused by the fracture.

Czech name

Crack propagation criteria for the crack terminating on the interface of a thin orthotropic layer and an orthotropic substrate.

Czech description

The contribution discusses possible approach for the formulation of fracture criteria for the general stress concentrators - especially a surface crack terminating at the interface of two dissimilar orthotropic media. The classical differential analysisis unsuitable due to the discontinuity in the elastic properties which leads on the interface to a zero or infinite energy release rates. Theory of the Finite Fracture Mechanic is used to overcome this problem (crack increase of finite length is used instead of the infinitesimal one). The three possibilities of the crack propagation are taken into the consideration - crack deflection (single or double) and a penetration of the crack across the interface into the substrate. The so-called matched asymptotic procedure in combination with FEM is used for the calculation of appropriate changes of potential energy caused by the fracture.

Type

D - Article in proceedings

CEP classification

JI - Composite materials

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2007

Confidentiality

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

Article name in the collection

Engineering Mechanics 2007

ISBN

978-80-87012-06

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

271-272

Publisher name

Institute of thermomechanics Academy of science of the Czech Republic

Place of publication

Prague

Event location

Svratka

Event date

May 14, 2007

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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