Numerical investigations of corner singularities in cracked bodies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F07%3A00092920" target="_blank" >RIV/68081723:_____/07:00092920 - 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

Numerical investigations of corner singularities in cracked bodies

Original language description

The influence of corner singularity on the distribution of the stresses around the crack front for a three-dimensional structure is described in this paper. The distribution of stress singularity through the thickness of the middle tension specimen provides us an indication of crack behaviour close to a free surface. An estimation of the region where the change of singularity exponent plays an important role in fatigue crack propagation rate was carried out. A decrease in fatigue crack propagation rateclose to the free surface was found. The lower fatigue crack propagation rate in the boundary layer in comparison with the interior of the specimen leads to a change of intersecting angle between crack and free surface and depends on Poisson?s ratio.

Czech name

Numerické stanovení rohové singularity v tělese s trhlinou

Czech description

V článku je popsán vliv rohové singularity na rozložení napětí v okolí vrcholu trhliny pro třídimenzionální konstrukci.Je sledováno rozložení rohové singularity po tloušťce vzorku. Byl proveden odhad oblasti, ve které dochází k významné změně exponentu singularity. Vlivem změny singularity po tloušťce dochází u volného povrchu k poklesu rychlosti šíření únavové trhliny.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

<a href="/en/project/GP106%2F06%2FP239" target="_blank" >GP106/06/P239: The effect of free surface on fatigue crack growth</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

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

Name of the periodical

Key Engineering Materials

ISSN

1013-9826

e-ISSN

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Volume of the periodical

348-349

Issue of the periodical within the volume

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Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

377-380

UT code for WoS article

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EID of the result in the Scopus database

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