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A study of the stability of sharp notches in the orthotropic heterogeneous media
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SYSNO ASEP 0354567 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title A study of the stability of sharp notches in the orthotropic heterogeneous media Author(s) Profant, T. (CZ)
Klusák, Jan (UFM-A) RID, ORCID
Kotoul, M. (CZ)Number of authors 3 Source Title Proceedings of ICMFF9. - Parma : University of Parma, 2010 / Carpinteri Andrea - ISBN 978-88-95940-31-1 Pages s. 733-740 Number of pages 8 s. Publication form CD-ROM - CD-ROM Action International Conference on Multiaxial Fatigue and Fracture Event date 07.06.2010-09.06.2010 VEvent location Parma Country IT - Italy Event type WRD Language eng - English Country IT - Italy Keywords Orthotropic bi-material notch ; composite materials ; crack initiation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GAP108/10/2049 GA ČR - Czech Science Foundation (CSF) GA101/08/0994 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The bi-material notch composed of two orthotropic parts is considered. The radial and tangential stresses and strain energy density are expressed using the Stroh-Eshelby-Lekhnitskii formalism for the plane elasticity. The stress singular exponents and corresponding eigenvectors are the solution of the eigenvalue problem leading from the prescribed notch boundary and compatibility conditions. In generally, there is more than one solution of this eigenvalue problem and consequently the generalized stress intensity factors. The potential direction of the crack initiation is determined from the maximum mean value of the tangential stresses and local minimum of the mean value of the generalized strain energy density factor in both materials. Following the assumption of the same mechanism of the rupture in the case of the crack and the notch, an expression can be obtained for the critical values of the generalized stress intensity factor. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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