Case Criterion of Crack Onset in Orthotropic Bi-material Notches

0354598 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Profant, T. - Klusák, Jan - Kotoul, M.
Case Criterion of Crack Onset in Orthotropic Bi-material Notches.
Key Engineering Materials. Roč. 465, - (2011), s. 157-160. ISSN 1013-9826.
[Materials Structure and Micromechanics of Fracture. Brno, 28.06.2010-30.06.2010]
Grant CEP: GA ČR GA101/08/0994; GA ČR GAP108/10/2049
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: orthotropic bi-material notch * crack initiation * matched asymptotic procedure
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

A bi-material notch composed of two orthotropic parts is considered. The stresses and displacements are expressed using the Stroh-Eshelby-Lekhnitskii formalism for plane elasticity. The potential direction of crack initiation is determined from the maximum of the mean value of the tangential stress or the local minimum of the mean value of the generalized strain energy density factor in both materials. The matched asymptotic procedure is introduced to derive the change of potential energy for the debonding crack and the crack initiated in the determined direction.
Trvalý link: http://hdl.handle.net/11104/0193567