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ŠEVČÍK, M. HUTAŘ, P. NÁHLÍK, L. KNÉSL, Z.
Originální název
An evaluation of the stress intensity factor in functionally graded materials
Typ
článek v časopise - ostatní, Jost
Jazyk
angličtina
Originální abstrakt
Functionally graded materials (FGM) are characterised by variations in their material properties in terms of their geometry. They are often used as a coating for interfacial zones to protect the basic material against thermally or mechanically induced stresses. FGM can be also produced by technological process for, example butt-welding of polymer pipes. This work is focused on a numerical estimation of the stress intensity factor for cracks propagat-ing through FGM structure. The main difficulty of the FE model creation is the accurate description of continual changes in mechanical properties. An analysis of the FGM layer bonded from both sides with different homoge-nous materials was performed to study the influence of material property distribution. The thickness effect of the FGM layer is also discussed. All analyses are simulated as a 2D problem of an edge crack specimen. In this pa-per, the above effects are quantified and conclusions concerning the applicability of the proposed model are dis-cussed.
Klíčová slova
functionally graded material; linear elastic fracture mechanics; discretization methodology; power-law material change
Autoři
ŠEVČÍK, M.; HUTAŘ, P.; NÁHLÍK, L.; KNÉSL, Z.
Rok RIV
2009
Vydáno
28. 12. 2009
Nakladatel
University of West Bohemia
Místo
Plzeň
ISSN
1802-680X
Periodikum
Applied andComputational Mechanics
Ročník
3
Číslo
2
Stát
Česká republika
Strany od
401
Strany do
410
Strany počet
10
BibTex
@article{BUT47439, author="Martin {Ševčík} and Pavel {Hutař} and Luboš {Náhlík} and Zdeněk {Knésl}", title="An evaluation of the stress intensity factor in functionally graded materials", journal="Applied andComputational Mechanics", year="2009", volume="3", number="2", pages="401--410", issn="1802-680X" }