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The Influence of Constraint Level on Crack Path
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SYSNO ASEP 0331834 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title The Influence of Constraint Level on Crack Path Author(s) Ševčík, Martin (UFM-A) RID
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Seitl, Stanislav (UFM-A) RID, ORCIDNumber of authors 4 Source Title Proceedings of the international conference on Crack Paths. - Padua : University Padua, 2009 / Atzori B. ; Carpinteri A. ; Pook L. P.
S. 105-105Number of pages 8 s. Action Crack Paths 2009 Event date 23.09.2009-25.09.2009 VEvent location Vicenza Country IT - Italy Event type WRD Language eng - English Country IT - Italy Keywords constraint ; crack propagation ; T-stress ; FEM Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA101/09/0867 GA ČR - Czech Science Foundation (CSF) GA101/08/1623 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The main aim of the work was to estimate effect of the constraint on the predicted crack path and show the cases where the failure of the component could be described more precisely by constraint-based description. A special specimen geometry with a high level of constraint was used. Numerical predictions of the crack path in a modified CT specimen are compared with experimental results. The numerical prediction of the crack path based on a modified Maximum Tangential Stress (MTS) criterion (the criterion uses a two-parameter description of the stress field around the crack tip) is generally in agreement with the experimental data. The classical MTS criterion was found much more sensitive on the crack increment. It can therefore be concluded, that the modified criterion in the framework of two-parameter linear elastic fracture mechanics estimated the crack path more precisely only in the case of a high level of constraint. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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