Original title:
ZÁVISLOST PROPORČNÍHO FAKTORU NA T-NAPĚTÍ
Translated title:
The influence of T-stress on proporcional factor
Authors:
Hutař, Pavel Document type: Papers Conference/Event: Únava a lomová mechanika 2002, Žinkovy (CZ), 2002-04-23 / 2002-04-25
Year:
2002
Language:
cze Abstract:
[cze][eng] Relace mezi CTOD a J integrálem je velice důležitá v různých aplikacích lomové mechaniky. Cílem tohoto článku je ukázat, že pomocí hodnoty T-napětí lze vysvětlit závislost nastíněné relace na hodnotě T-napětí. Na modelu modifikované okrajové vrstvy je pak zkoumán vliv materiálových charakteristik na velikost proporčního faktoru.Relation between crack opening displacement and J integral is of a great importance in fracture mechanics.The basic aim of this paper is to describe an influence of T-stress on proporcional factor. This factor is occured on the J integral and CTOD estimation equations. Specimens with different values of T-stress (compact tension,three point bend and single edge cracked tension) are analysed by finite element method, the factor is calculated as function of corresponding crack length. The influence of different material constants on proporcional factor are analysed by modified boundary layer model. Results are discussed from the point of view of two-parameter fracture mechanics.
Keywords:
CTOD; J-integral; proporcial faktor Project no.: CEZ:AV0Z2041904 (CEP), GA106/01/0381 (CEP) Funding provider: GA ČR Host item entry: ÚNAVA A LOMOVÁ MECHANIKA 2002
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/11104/0074834