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arXiv · 1509.05161

The role of water in the behavior of wood

Dominique Derome·Ahmad Rafsanjani·Stefan Hering·Martin Dressler·Alessandra Patera·Christian Lanvermann·Marjan Sedighi-Gilani·Falk K. Wittel·Peter Niemz·Jan Carmeliet
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Abstract

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.

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Dominique Derome, Ahmad Rafsanjani, Stefan Hering, Martin Dressler, Alessandra Patera, Christian Lanvermann, Marjan Sedighi-Gilani, Falk K. Wittel, Peter Niemz, Jan Carmeliet. 2015-09-17. The role of water in the behavior of wood. https://doi.org/10.1177/1744259112473926

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