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Transferability of Fracture Mechanical Characteristics
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SYSNO ASEP 0177828 Document Type M - Monograph Chapter R&D Document Type Monograph Chapter Title Problems in Q-Parameters Calculations Author(s) Vlček, Libor (UFM-A)
Chlup, Zdeněk (UFM-A) RID, ORCID
Kozák, Vladislav (UFM-A) RID, ORCIDSource Title Transferability of Fracture Mechanical Characteristics / Dlouhý I.. - Dordrecht : Kluwer Academic Publishers, 2002 Pages s. 79-92 Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords stress-strain curve ; deformation hardening ; J-integral Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects ME 303 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA101/00/0170 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z2041904 - UFM-A Annotation The present work deals with determination of the sensitivity detached parameters describing fracture behaviour of body with crack with respect to the character change of true stress-strain curve. The typical low carbon cast steel stress-strain curve with dominant region of Lűders deformation was exerted. This paper presents the consideration on the change judgement of J-integral and Q-parameter as the base parameters of two parameters fracture mechanics. The attention is paid on the influence of deformation hardening exponent of the idealised true stress-strain material curve described by the Ramberg-Osgood relation to Q-parameter. All computations are based on the 3D elastic-plastic analyses using FEM and supported by mechanical tests. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2003
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