Since 1963
ARTICLE
Predictions of fracture resistance of spruce wood under mixed mode loading using non-local fracture theory and numerical modelling
1
Bialystok University of Technology, Department of Mechanical Engineering, Bialystok, Poland
Submission date: 2022-10-30
Final revision date: 2022-11-29
Acceptance date: 2022-11-29
Online publication date: 2023-01-08
Publication date: 2023-01-30
Corresponding author
Marek Romanowicz
Department of Mechanical Engineering, Bialystok University of Technology, Wiejska 45c, 15-351, Bialystok, Poland
Department of Mechanical Engineering, Bialystok University of Technology, Wiejska 45c, 15-351, Bialystok, Poland
Journal of Theoretical and Applied Mechanics 2023;61(1):147-162
KEYWORDS
TOPICS
ABSTRACT
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.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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