Original title:
Estimation of critical values for crack initiation from sharp V-notches
Authors:
Náhlík, Luboš ; Štegnerová, Kateřina ; Hutař, Pavel Document type: Papers Conference/Event: Engineering Mechanics 2014 /20./, Svratka (CZ), 2014-05-12 / 2014-05-15
Year:
2014
Language:
eng Abstract:
Abstract: The aim of the paper is to estimate a critical value of an applied stress for a crack initiation from sharp tip of the V-notch using a procedure based on linear elastic fracture mechanics (LELM). The V-notch represents singular stress concentrator with the stress singularity exponent different from 0.5, therefore the generalized form of LELM for stress distribution description in the vicinity of the sharp V-notch was used. The stress singularity exponent depends on the V-notch opening angle, in general. A stability criterion based on the average value of the tangential stress component across a critical distance d from the V-notch tip is used in the paper. Resultant values of the critical applied stress are compared with experimental data.
Keywords:
Failure initiation; generalized stress intensity factor; stress singularity; V-notch Project no.: EE2.3.30.0063 Funding provider: GA MŠk Host item entry: Engineering Mechanics 2014. 20th International conference. May 12-15, 2014, Svratka, Czech Republic. Book of full texts, ISBN 978-80-214-4871-1, ISSN 1805-8248
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/11104/0238933