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Modélisation du comportement mécanique différé du bois en environnement variable
This article describes the modelling of viscoelastic behavior of wooden material in a variable environment. The model is constructed with generalized Kelvin-Voigt cells associated in series with a shrinkage and swelling element depending on the mechanical state of material. The material ageing due to climatic variations implies an evolution of rheological parameters in function of wood moisture content and temperature and a coupling of two distinct laws ofvis-coelastic behavior, one for drying and the other for humidification, to be in agreement with the principle thermodynamic when wood is subjected with non monotonous variations of moisture. An incremental formulation of the model is established in the finite element software CAST3M and an experimental validation is presented.
Modélisation du comportement mécanique différé du bois en environnement variable
This article describes the modelling of viscoelastic behavior of wooden material in a variable environment. The model is constructed with generalized Kelvin-Voigt cells associated in series with a shrinkage and swelling element depending on the mechanical state of material. The material ageing due to climatic variations implies an evolution of rheological parameters in function of wood moisture content and temperature and a coupling of two distinct laws ofvis-coelastic behavior, one for drying and the other for humidification, to be in agreement with the principle thermodynamic when wood is subjected with non monotonous variations of moisture. An incremental formulation of the model is established in the finite element software CAST3M and an experimental validation is presented.
Modélisation du comportement mécanique différé du bois en environnement variable
Randriambololona, Hery (author) / Dubois, Frédéric (author) / Petit, Christophe (author)
Revue Française de Génie Civil ; 6 ; 1333-1357
2002-01-01
25 pages
Article (Journal)
Electronic Resource
Unknown
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