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MULTI-PARAMETER MTS AND SED CRITERION APPLIED ON A CRACK IN AN ALKALI-ACTIVATED CONCRETE SPECIMEN UNDER MIXED-MODE LOADING

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    0543986 - ÚFM 2024 RIV CZ eng C - Conference Paper (international conference)
    Malíková, Lucie - Miarka, Petr - Simonová, H.
    MULTI-PARAMETER MTS AND SED CRITERION APPLIED ON A CRACK IN AN ALKALI-ACTIVATED CONCRETE SPECIMEN UNDER MIXED-MODE LOADING.
    ENGINEERING MECHANICS 2020 (IM2020). Brno: Brno Univ Technol, 2020 - (Fuis, V.), (2020), s. 338-341. ISBN 978-80-214-5896-3. ISSN 1805-8248. E-ISSN 1805-8256.
    [IM2020 - International Conference on Engineering Mechanics /26./. Brno (CZ), 24.11.2020-25.11.2020]
    Institutional support: RVO:68081723
    Keywords : t-stress * fracture * field * Multi-parameter fracture mechanics * Alkali-activated concrete * Mixed-mode loading * mts * sed
    OECD category: Civil engineering

    The paper is devoted to an analysis of a crack propagation in a semi-circular concrete specimen under three-point bending. I+II mixed-mode loading is ensured via an inclined crack. Crack deflection angle is investigated by means of the generalized/multi-parameter form of the Maximum Tangential Stress (MTS) criterion and Strain Energy Density (SED) criterion as well as experimentally. The multi-parameter fracture mechanics concept applied in this work is based on the approximation of the crack-tip stress field by means of the Williams series expansion (WE). It has been proved that this approach can help to describe crack behavior in some kinds of materials better than the classical (one-parameter: stress intensity factor) fracture mechanics. This conclusion is discussed also in this paper.
    Permanent Link: http://hdl.handle.net/11104/0322634

     
     
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