Original title: Fracture process zone size and energy dissipated during crack propagation in quasi-brittle materials
Translated title: Velikost lomové procesní zóny a disipační energie během šíření trhliny v kvazi křehkém materiálu
Authors: Řoutil, L. ; Veselý, V. ; Keršner, Z. ; Seitl, Stanislav ; Knésl, Zdeněk
Document type: Papers
Conference/Event: ECF17 - European Conference on Fracture /17./, Brno (CZ), 2008-09-02 / 2008-09-05
Year: 2008
Language: eng
Abstract: [eng] [cze]
The paper presents a numerical analysis of fracture processes in testing specimen configurations with substantially different crack tip stress constraint levels. Specimens of several sizes and relative notch lengths are taken into account. The features of the distribution of current/cumulative value of fracture energy along the specimen ligament are discussed and related to estimations of fracture process zone (FPZ) size and shape, in which the energy is dissipated. Significant effect of the stress constraint on the size/shape of the FPZ, and consequently the energy dissipated within it, is reported. Příspěvku je presentovaná numerická analýza lomové procesní zóny pro různou velikost constraintu. Tvarově různá tělesa se zvětšujícími se rozměry jsou analyzovaná v závislosti na relativní délce zářezu. Ukazuje se silný efekt úrovně constraintu na tvar a velikost procesní zóny ve které je energie disipovaná.
Keywords: cementitious composites; fracture energy; fracture process zone; numerical modelling
Project no.: CEZ:AV0Z20410507 (CEP)
Host item entry: Proceedings of 17th European Conference on Fracture, ISBN 978-80-214-3692-3

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/11104/0167243

Permalink: http://www.nusl.cz/ntk/nusl-39622


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Research > Institutes ASCR > Institute of Physics of Materials
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