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Influence of the V-notch opening angle on critical applied force values for the crack initiation from the sharp V-notch
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SYSNO ASEP 0448572 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Influence of the V-notch opening angle on critical applied force values for the crack initiation from the sharp V-notch Author(s) Štegnerová, Kateřina (UFM-A)
Náhlík, Luboš (UFM-A) RID, ORCID
Hutař, Pavel (UFM-A) RID, ORCIDNumber of authors 3 Source Title Advances in Fracture and Damage Mechanics XIII. - Zürich : Trans Tech publications, 2015 / Alfaiate J. ; Aliabadi M. H. - ISSN 1013-9826 - ISBN 978-3-03835-235-8 Pages s. 165-168 Number of pages 4 s. Publication form Print - P Action FDM 2014 International Conference on Fracture and Damage Mechanics /13./ Event date 23.09.2014-25.09.2014 VEvent location São Miguel Island, Azores Country PT - Portugal Event type WRD Language eng - English Country CH - Switzerland Keywords sharp V-notch ; crack initiation ; stress singularity ; generalized stress intensity factor Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects EE2.3.30.0063 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 EID SCOPUS 84913556047 DOI 10.4028/www.scientific.net/KEM.627.165 Annotation The aim of this paper is to estimate a value of the critical applied force for a crack initiation from the sharp V-notch tip. The classical approach of the linear elastic fracture mechanics (LELM) was generalized, because the stress singularity exponent differs from 0.5 in studied case. The value of the stress singularity exponent depends on the V-notch opening angle. The finite element method was used for a determination of stress distribution in the vicinity of the sharp Vnotch tip and for the estimation of the generalized stress intensity factor depending on the V-notch opening angle. Critical value of generalized stress intensity factor was obtained by using stability criterion based on the tangential stress component averaged over a critical distance d from the Vnotch tip. Calculated values of the critical applied force were compared with experimental data taken from the literature. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2016
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