Temat: fracture process zone - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Experimental investigations of strain localization in concrete using Digital Image Correlation (DIC) technique
Autorzy:: Kozicki, J.
Tejchman, J.
Powiązania:: https://bibliotekanauki.pl/articles/241130.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:: concrete beams
digital image correlation
fracture process zone
strain localization
three-point bending
Opis:: The paper presents results of experimental investigations of strain localization in concrete using a non-destructive method called Digital Image Correlation (DIC) technique. This technique measures surface displacements from digital images. The model tests were carried out with notched concrete specimens under three-point bending. Three different beam sizes and two different concrete mixes were used. During experiments, load--deflection curves and evolution of fracture process zone were determined. The measured size effect in strength was compared with the deterministic size effect law by Bazant (1984) and experimental results by Le Bellégo et al (2003).
Źródło:: Archives of Hydro-Engineering and Environmental Mechanics; 2007, 54, 1; 3-24
1231-3726
Pojawia się w:: Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Predictions of fracture resistance of spruce wood under mixed mode loading using non-local fracture theory and numerical modelling
Autorzy:: Romanowicz, Marek
Powiązania:: https://bibliotekanauki.pl/articles/2200902.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: mixed-mode bending test
process zone length
resistance curves
fracture criteria
cohesive zone model
Opis:: A novel analytical model to predict fracture resistance of a quasi-brittle material, like wood, is presented. The model is based on a scaling parameter introduced into the non-local fracture theory to take into account the specimen size effect on the development of the damage zone. An expression for length of the critical process zone, which can be used in damage tolerant design of wooden structures is derived from this theory. The model is validated with mixedmode bending tests. A numerical analysis using cohesive elements is performed to understand the role of specimen size in the development of the damage zone. The analytical predictions of the fracture resistance and the critical process zone length for wood are compared with numerical results and experimental data available in the literature.
Źródło:: Journal of Theoretical and Applied Mechanics; 2023, 61, 1; 147--162
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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