Název: Multi-parameter MTS and SED criterion applied on a crack in an alkali-activated concrete specimen under mixed-mode loading
Autoři: Malíková, Lucie ; Miarka, Petr ; Šimonová, H.
Typ dokumentu: Příspěvky z konference
Konference/Akce: IM2020 - International Conference Engineering Mechanics /26./, virtuální (CZ), 20201124
Rok: 2020
Jazyk: eng
Abstrakt: 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.
Klíčová slova: Alkali-activated concrete; Mixed-mode loading; MTS; Multi-parameter fracture mechanics; SED
Zdrojový dokument: ENGINEERING MECHANICS 2020 (IM2020), ISBN 978-80-214-5896-3, ISSN 1805-8248

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://www.engmech.cz/improc/2020/338.pdf
Původní záznam: https://hdl.handle.net/11104/0352982

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-614134