Generalized linear elastic fracture mechanics: an application to a crack touching the bimaterial interface

0354538 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Náhlík, Luboš - Šestáková, L. - Hutař, Pavel - Knésl, Zdeněk
Generalized linear elastic fracture mechanics: an application to a crack touching the bimaterial interface.
Key Engineering Materials. Roč. 452-453, - (2011), s. 445-448. ISSN 1013-9826
Grant CEP: GA AV ČR(CZ) KJB200410803; GA ČR GA101/09/1821
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: generalized stress intensity factor * bimaterial interface * composite materials * strain energy density factor * fracture criterion * generalized linear elastic fracture mechanics
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

In the contribution the limits of the validity of classical linear elastic fracture mechanics are extended to problems connected with failure of composite structures. The work is focused mainly on the case of a crack touching the interface between two different materials, two different constituents. The approach suggested in the paper facilitates the answer to the question what is the influence of particle (in particulate composite) or layer (in laminates) on crack propagation through bimaterial interface. Different composite (bimaterial) structures are considered: layered composites and composites reinforced by particles. The presented approach follows the basic idea of linear elastic fracture mechanics, i.e. the validity of small scale yielding conditions is assumed, and has a phenomenological character.
Trvalý link: http://hdl.handle.net/11104/0193519