Comparison of fracture properties of two wood species through cohesive crack simulations

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Dourado, N (Author) Other; Morel, S (Author) Other; de Moura, MFSF (Author) FEUP; Valentin, G (Author) Other; Morais, J (Author) Other

Journal

Title: Composites Part A: Applied Science and Manufacturing

Vol. 39

Pages: 415-427

ISSN: 1359-835X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 66 Citations

Scopus - 82 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-2VS

DOI: 10.1016/j.compositesa.2007.08.025

Abstract (EN): In the present work fracture (Mode 1) was induced through three point-bending tests in two wood species used in timber construction: Maritime pine (Pinus pinaster Ait.) and Norway spruce (Picea abies L.). Load-displacement curves were experimentally determined and corresponding Resistance-curves (R-curves) obtained using an equivalent linear elastic approach. An inverse method is presented to identify cohesive crack properties of a cohesive crack bilinear model used to simulate fracture in both wood species, combining experimental data and a developed genetic algorithm. Good agreement between numerical and experimental load-displacement and R-curves was obtained. Conclusions are drawn from finite element simulations regarding the extent of the numerical cohesive zone computed for each studied wood. (c) 2007 Published by Elsevier Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13