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Estimation of critical values for crack propagation from sharp v-notch
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SYSNO ASEP 0099840 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Estimation of critical values for crack propagation from sharp v-notch Title Stanovení kritické hodnoty pro šíření trhliny z ostrého v-vrubu Author(s) Majer, Zdeněk (UFM-A)
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Source Title Engineering Mechanics 2007. - Praha : IT ASc. CzR,v. v. i.,, 2007 / Zolotarev Igor - ISBN 978-80-87012-06-2 Pages čl. 82 Number of pages 10 s. Publication form CD - CD Action Engineering Mechanics 2007 Event date 14.05.2007-17.05.2007 VEvent location Svratka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords V-notch Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/06/P239 GA ČR - Czech Science Foundation (CSF) GD106/05/H008 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The aim of this paper is to investigate the beginnings of crack propagation from sharp V-notches. Stress distribution around the tip of a V-notch is described on the basis of linear-elastic fracture mechanics. The V-notch is a singular stress concentrator with a singularity exponent dependent on the V-notch opening angle. The stability criteria are generalized for a stress singularity different from 0,5. Using FEM analysis the critical stress for crack initiation was estimated as a function of the V-notch angle. The results of numerical calculations were compared with experiments taken from the literature. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
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