Title: Reconstruction of a fracture process zone during tensile failure of quasi-brittle materials
Authors: Veselý, Václav
Frantík, Petr
Citation: Applied and Computational Mechanics. 2010, vol. 4, no. 2, p. 237-250.
Issue Date: 2010
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/70/53
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: cementové kompozity;lomový proces;lomová mechanika;kvazi-křehké materiály
Keywords in different language: cementitious composites;fracture process;fracture mechanics;quasi-brittle materials
Abstract: The paper outlines a technique for estimation of the size and shape of an inelastic zone evolving around a crack tip during the tensile failure of structures/structural members made of quasi-brittle building materials, particularly cementitious composites. The technique is based on an amalgamation of several concepts dealing with the failure of structural materials, i.e. multi-parameter linear elastic fracture mechanics, classical non-linear fracture models for concrete (equivalent elastic crack and cohesive crack models), and the plasticity approach. The benefit of this technique is expected to be seen in the field of the determination of fracture characteristics describing the tensile failure of quasi-brittle silicate-based composites. The method is demonstrated using an example of a (numerically simulated) fracture test involving the three-point bending of a notched beam and validated by experimentally obtained results of three-point bending and wedge-splitting tests taken from the literature.
Rights: © 2010 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 4, number 2 (2010)
Volume 4, number 2 (2010)

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