Growth stress generation: A new mechanical model of the dimensional change of wood cells during maturation

A new mechanical model was developed to introduce the maturation process of wood cells theoretically. Using mechanical and physical properties of the two components of the cell wall, namely, a matrix reinforced by oriented cellulose microfibrils, it is possible to predict the relation between the an...

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Bibliographic Details
Published inJournal of wood science Vol. 45; no. 5; pp. 384 - 391
Main Authors Guitard, D. (Universite de Bordeaux I (France)), Masse, H, Yamamoto, H, Okuyama, T
Format Journal Article
LanguageEnglish
Published Heidelberg Springer Nature B.V 01.10.1999
Subjects
BOIS
CELL WALLS
CELLS
CELLULE
Cellulose
CELULAS
Compressive properties
CRECIMIENTO
CROISSANCE
Dimensional changes
GROWTH
MADERA
MADURACION
MATURATION
MODELE
MODELOS
PARED CELULAR
PAROI CELLULAIRE
Physical properties
Static equilibrium
Tensile stress
WOOD
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Summary:A new mechanical model was developed to introduce the maturation process of wood cells theoretically. Using mechanical and physical properties of the two components of the cell wall, namely, a matrix reinforced by oriented cellulose microfibrils, it is possible to predict the relation between the anisotropic released strains and the microfibril angle. The model used in this study is based on the unified hypothesis combining the compressive stress generated in the cell wall matrix and the tensile stress originating in the cellulose microfibril as a framework. It is simple compared to the previously derived multilayered model, but it does not strictly fulfill all conditions of static equilibrium. Nevertheless, an excellent fit with observations can be obtained through varying a limited number of parameters.
Bibliography:F60
2001001024
K50
ISSN:1435-0211
1611-4663
DOI:10.1007/BF01177910