Original title: Analysis of the crack initiated from the orthotropic bi-material sharp notch
Authors: Profant, T. ; Klusák, Jan ; Kotoul, M.
Document type: Papers
Conference/Event: Engineering Mechanics 2011, Svratka (CZ), 2011-05-09 / 2011-05-12
Year: 2011
Language: eng
Abstract: Under the consideration of the bi-material notch composed of two orthotropic materials the potential direction of the crack initiated from the notch tip 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 for the critical values of the generalized stress intensity factor can be obtained. The radial and tangential stresses and strain energy density are expressed using the Lekhnitskii-Eshelby-Stroh (LES) 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.
Keywords: Bi-material notch; LES formalism; Orthotropic
Project no.: CEZ:AV0Z20410507 (CEP), GAP108/10/2049 (CEP)
Funding provider: GA ČR
Host item entry: Engineering Mechanics, ISBN 978-80-87012-33-8

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/11104/0203977

Permalink: http://www.nusl.cz/ntk/nusl-80984


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