Original title: Influence of Bi-Material interface and plasticity induced crack closure on the treshold values
Translated title: Vliv plasticky indukovaného zavírání trhliny a bi-materiálového rozhraní na prahové hodnoty
Authors: Náhlík, Luboš ; Hutař, Pavel
Document type: Papers
Conference/Event: Enginnering mechanics, Svratka (CZ), 2007-05-14 / 2007-05-17
Year: 2007
Language: eng
Abstract: [eng] [cze]
The paper is devoted to fatigue crack propagation in layered materials. The influence of plasticity induced crack closure on threshold values for fatigue crack propagation through interfaces between different materials layers is studied. The main aim was to estimate the influence of the loading ratio R on threshold values for crack propagation through a bi-material interface as a function of the elastic mismatch of both materials. The finite element method (FEM) is used for numerical calculations. Results obtained for different loading ratios, materials, boundary conditions and magnitude of applied loading can be generalized and used for the design of composite bodies with different material layers. Práce se zabývá šířením únavových trhlin ve vrstevnatých materiálech. Je studován vliv plasticky indukovaného zavírání trhliny na prahové hodnoty pro šíření trhliny přes rozhraní dvou materiálů. Hlavním cílem je odhadnout vliv velikosti parametru asymetrie cyklu R na prahové hodnoty pro šíření trhliny přes rozhraní dvou materiálů.
Keywords: bi-material interface; plasticity induced crack closure; threshold value
Project no.: CEZ:AV0Z20410507 (CEP), 1QS200410502 (CEP), GA101/05/0320 (CEP)
Funding provider: GA AV ČR, GA ČR
Host item entry: Engineering Mechanics 2007, ISBN 978-80-87012-06-2

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0153899

Permalink: http://www.nusl.cz/ntk/nusl-38105


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Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers