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Influence of friction on stress and strain distributions in small punch creep test models
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SYSNO ASEP 0332110 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Influence of friction on stress and strain distributions in small punch creep test models Author(s) Dymáček, Petr (UFM-A) RID, ORCID
Seitl, Stanislav (UFM-A) RID, ORCID
Milička, Karel (UFM-A)
Dobeš, Ferdinand (UFM-A) RID, ORCIDNumber of authors 4 Source Title Key Engineering Materials - ISSN 1013-9826
417-418, - (2010), s. 561-564Number of pages 4 s. Action International Conference on Fracture and Damage Mechanics /8./ Event date 08.09.2009-10.09.2009 VEvent location Malta Country MT - Malta Event type WRD Language eng - English Country CH - Switzerland Keywords small punch test ; creep ; chromium steel ; finite element method Subject RIV JG - Metallurgy R&D Projects IAA200410801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000279319200141 Annotation The FEM modeling of small punch tests on miniaturized thin discs (SPT) of two heat resistant steels was performed. The FE models did represent the creep SPT, i.e. tests with constant acting force. It was shown that different values of the surface friction coefficient used in the calculations have significant impact on the calculated stress and strain state and consequently on the deformed shape of the disc. Thus, the surface friction coefficient should be considered one of the key factors for any correct correlation of SPT and uniaxial creep test results. Proper attention must be paid to the friction conditions during the long term creep deformation. An attempt to define simple approach how to relate the SPT with uniaxial tests is suggested. Some of the calculated results are compared with experiment. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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