- Tytuł:
- Deflection of an eccentric crack under mixed-mode conditions in an SCB specimen
- Autorzy:
-
Malíková, Lucie
Miarka, Petr
Šimonová, Hana
Kucharczyková, Barbara - Powiązania:
- https://bibliotekanauki.pl/articles/2065612.pdf
- Data publikacji:
- 2020
- Wydawca:
- Politechnika Częstochowska
- Tematy:
-
surface cracks
finite element analysis
stress
concrete
pęknięcia powierzchniowe
analiza elementów skończonych
naprężenie
beton - Opis:
- Crack propagation under mixed-mode (I + II) conditions has been investigated in a semicircular disc where various levels of mixed-mode can be achieved by means of different geometry configurations. The research has been performed on a novel cementitious material, alkali-activated concrete. Its main advantage is that it is environment-friendly. On the other hand, its fracture mechanical properties, as of yet, have not been described sufficiently. Therefore, a fracture analysis has been performed. The crack deflection under three point bending conditions has been investigated numerically as well as experimentally. The numerical approach is based on a combination of the common finite element analysis and a multi-parameter form of the maximum tangential stress criterion. This generalized method is suitable especially for materials with specific (elasto-plastic, quasi-brittle etc.) fracture behaviour. The over-deterministic method together with the Williams expansion is applied to approximate selected stress tensor components around the crack tip. In this work, the influence of the eccentric crack is also discussed. In the conclusions, several recommendations about using single-parameter/multi-parameter fracture mechanics are stated.
- Źródło:
-
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2020, 9, 2; 79--87
2299-8535
2544-963X - Pojawia się w:
- Budownictwo o Zoptymalizowanym Potencjale Energetycznym
- Dostawca treści:
- Biblioteka Nauki
Artykuł