Moisture-dependent thermo-mechanical constitutive modeling of wood
ISSN: 0264-4401
Article publication date: 16 November 2018
Issue publication date: 8 February 2019
Abstract
Purpose
The purpose of this study is the numerical investigation of densification and molding processes of wood. Providing theoretical and numerical approaches with respect to a consistent multi-physical finite element method framework are further goals of this research.
Design/methodology/approach
Constitutive phenomenological descriptions of the thermo-mechanical and moisture-dependent material characteristics of wood are introduced. Special focus is given to a consistent hygro-thermo-mechanical modeling at finite deformations to capture the realistic material behavior of wood, especially when it is subjected to densification and molding processes.
Findings
Realistic theoretical formulations of different hygro-thermo-mechanical processes are provided. A successful numerical modeling is demonstrated for beech wood by validation at experimental findings.
Originality/value
The constitutive laws and numerical findings are new, as they govern a multi-physical large deformation framework and are applied to the advanced technology of densification and molding of wood.
Keywords
Acknowledgements
This research is financially supported by the Deutsche Forschungsgemeinschaft (DFG) under contract KA 1163/22, which is gratefully acknowledged by the authors. Furthermore, the authors acknowledge the help of BSc A. Kaziu, who assisted in preparing and analyzing the experiments.
Citation
Fleischhauer, R., Hartig, J.U., Haller, P. and Kaliske, M. (2019), "Moisture-dependent thermo-mechanical constitutive modeling of wood", Engineering Computations, Vol. 36 No. 1, pp. 2-24. https://doi.org/10.1108/EC-09-2017-0368
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited