Modélisation du comportement mécanosorptif des éléments en bois

Abstract : Timber structures are simultaneously loaded by moisture content and mechanical effects. We propose a thermodynamic approach, for creep uniaxial elastics loadings, witch allows us to transpose Hooke's law to mécanosorptive behaviour by uncoupling internal stress in a mechanical and a mecanosorptive stress. The Calculus of elastic deformation necessitates to define wood memory as minimal elastic modulus under creep loading. Generalization of this model for an arbitrary loading is presented by an incremental formulation and an integral formulation.