The high temperature process of wood surface densification increases the wood density in the transverse direction under compression. The recent experimental research has pointed out the influence of the process parameters on the development of the density profiles in the modified samples. The numerical modelling can help to optimize the experimental work which is often expensive due to the large amount of tests required to check the influence of the process parameters. In the present work a FEM simulation of the hygro-thermal behaviour of wood under surface densification is proposed by using a three-dimensional hygro-thermal model based on earlier literature approaches. The model is implemented in a user subroutine of the FEM code Abaqus starting from the definition of a weak form of hygro-thermal equations of the problem. The relationship between the numerical profiles of moisture content and the experimental density profiles is discussed.
|Title of host publication||Proceedings of the Sixth European Conference on Wood Modification ECWM6 2012|
|Editors||Dennis Jones, H. Militz, M. Petrič, F. Pohleven, M. Humar, M. Pavlič|
|Publisher||University of Ljubljana|
|Number of pages||8|
|Publication status||Published - 2012|
|MoE publication type||A4 Article in a conference publication|
|Event||The Sixth European Conference on Wood Modification, ECWM6 2012 - Ljubljana, Slovenia|
Duration: 17 Sep 2012 → 18 Sep 2012
|Conference||The Sixth European Conference on Wood Modification, ECWM6 2012|
|Period||17/09/12 → 18/09/12|
- finite element method
- multiphase models
- wood surface densification
Genoese, A., Genoese, A., Fortino, S., & Rautkari, L. (2012). A computational approach for the hygro-thermal modelling of wood under surface densification. In D. Jones, H. Militz, M. Petrič, F. Pohleven, M. Humar, & M. Pavlič (Eds.), Proceedings of the Sixth European Conference on Wood Modification ECWM6 2012 University of Ljubljana.