Article ID Journal Published Year Pages File Type
1467468 Composites Part A: Applied Science and Manufacturing 2008 13 Pages PDF
Abstract

In the present work fracture (Mode I) 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.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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