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Conditions for crack initiation in an orthotropic bi-material corner determined by means of the strain energy density factor
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SYSNO ASEP 0354558 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Conditions for crack initiation in an orthotropic bi-material corner determined by means of the strain energy density factor Author(s) Profant, T. (CZ)
Klusák, Jan (UFM-A) RID, ORCID
Kotoul, M. (CZ)Number of authors 3 Source Title Multiscaling of Synthetic and Natural Systems with Self-Adaptive Capability. - Taipei : National Taiwan University of Science and Technology, 2010 / Sih George C. ; Chao C.K. - ISBN 978-986-02-3909-6 Pages s. 149-152 Number of pages 4 s. Publication form - - - Action International Conference on Mesomechanics /12./ Event date 21.06.2010-25.06.2010 VEvent location Taipei Country TW - Taiwan, Province of China Event type WRD Language eng - English Country TW - Taiwan, Province of China Keywords orthotropic bi-material corner ; stability criterion ; strain energy density factor Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA101/08/0994 GA ČR - Czech Science Foundation (CSF) GAP108/10/2049 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation A bi-material notch composed of two orthotropic parts is considered. The stress components and the strain energy density are expressed using the Stroh-Eshelby-Lekhnitskii formalism for 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. Generally, there is more than one solution of this eigenvalue problem and consequently the stress intensity factors. The potential direction of crack initiation is determined from the local minimum of the mean value of the 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 for the critical values of the stress intensity factor can be obtained. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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