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NÁHLÍK, L. ŠESTÁKOVÁ, L. HUTAŘ, P.
Original Title
Numerical investigation of stress singularities in cracked bimaterial body
Type
journal article in Web of Science
Language
English
Original Abstract
Composite materials or generally materials with interfaces are nowadays used in many varied engineering applications. In comparison with classical engineering materials the existence of material interface causes locally different stress distribution, which can strongly influence behaviour of whole structure and can have an important influence on failure mechanisms of such materials. The paper presented is devoted to the investigation of stress singularity exponents of a crack growing in a bimaterial body perpendicularly to the interface and touching the material interface. Discrepancies between value of stress singularity exponent in the centre of bimaterial body and on the free surface were found. The assumptions of linear elastic fracture mechanics (LEFM) and small scale yielding (SSY) are considered. For numerical calculations finite element analysis was used. Results obtained can contribute to a better understanding of failure of materials with interfaces.
Keywords
bimaterial interface, stress singularity exponent, corner singularity, vertex singularity, general singular stress concentrator
Authors
NÁHLÍK, L.; ŠESTÁKOVÁ, L.; HUTAŘ, P.
RIV year
2008
Released
2. 7. 2008
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
1013-9826
Periodical
Key Engineering Materials (print)
Year of study
385-387
Number
State
Swiss Confederation
Pages from
125
Pages to
128
Pages count
4
BibTex
@article{BUT48865, author="Luboš {Náhlík} and Lucie {Malíková} and Pavel {Hutař}", title="Numerical investigation of stress singularities in cracked bimaterial body", journal="Key Engineering Materials (print)", year="2008", volume="385-387", number="385-387", pages="125--128", issn="1013-9826" }