Gril Joseph, Jullien Delphine, Fournier Meriem, Thibaut Bernard.
1996. Modelling non axisymmetric groth stresses and related problems.
In : Workshop IUFRO S5.01-04-Topic 2
Résumé : Residual growth stresses in trees are the cause of various problems at early stages of wood transformation such as heart checking at log ends. Based on a theoretical approach of growth stress distribution, an experimental procedure allowing the global estimation of locked-in strains in a green disk, both instantaneous and temperature-induced, is proposed. Influence of wood heterogeneities and anisotropy level are studied based on finite element analysis. Tree stem elaboration by deposition of successive layers is simulated, as well as the various cutting and heating operations used in the procedure.
Mots-clés Agrovoc : bois, propriété mécanique, croissance, propriété rhéologique, température
Mots-clés complémentaires : Tension interne, Anisotropie
Classification Agris : K50 - Technologie des produits forestiers
Auteurs et affiliations
- Gril Joseph
- Jullien Delphine
- Fournier Meriem
- Thibaut Bernard, CIRAD-FORET-LABORATOIRE QTB (FRA)
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/391668/)
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