Original title: Calculation of fracture parameters for the cracked bodies strengthened by circular patches
Authors: Gröger, Roman
Document type: Papers
Conference/Event: Výpočtová mechanika /17./, Nečtiny (CZ), 2001-10-29 / 2001-10-31
Year: 2001
Language: eng
Abstract: The present article yields a quantitative characterization of the influence of geometry and material properties on the values of fracture parameters. Both the cracked sheets with single and double circular patches are used for the analysis. The desired value of elastic T stress is obtained using the conservation M integral resulting from the Eshelby integral concept. For the SIF calculation, the indirect method of J integral is used and the general concept for the SIF separation in case of a mixed mode of loading is discussed here. The reduction effect is specified by the ratios of SIF and T stress. The method of stiffening the region surrounding the crack tip can be used as an alternative method of the lifetime prolongation, but cannot be used in all cases. Sometimes the usual method of the crack tip singularity cancellation is the only one to repair the structure.
Keywords: crack; patch; strengthen
Project no.: CEZ:AV0Z2041904 (CEP), GA106/99/1173 (CEP)
Funding provider: GA ČR
Host item entry: Výpočtová mechanika 2001, ISBN 80-7082-780-7

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/11104/0074608

Permalink: http://www.nusl.cz/ntk/nusl-26476


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