  Wood, due to its biological origin, has the capacity to interact with water.
Sorption/desorption of moisture is accompanied with swelling/shrinkage and
softening/hardening of its stiffness. The correct prediction of the behavior of
wood components undergoing environmental loading requires that the moisture
behavior and mechanical behavior of wood are considered in a coupled manner. We
propose a comprehensive framework using a fully coupled poromechanical
approach, where its multiscale implementation provides the capacity to take
into account, directly, the exact geometry of the wood cellular structure,
using computational homogenization. A hierarchical model is used to take into
account the subcellular composite-like organization of the material. Such
advanced modeling requires high resolution experimental data for the
appropriate determination of inputs and for its validation. High-resolution
x-ray tomography, digital image correlation, and neutron imaging are presented
as valuable methods to provide the required information.
