Finite element simulation of the hygro-thermal response of wood during surface densification

Andrea Genoese, Alessandra Genoese, Stefania Fortino, Lauri Rautkari

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

The high temperature process of wood surface densification increases the wood density in the transverse direction under compression. This process could be of great interest for industry and represents the topic of recent research efforts addressed both to experimental studies and to investigate models and numerical methods of simulation. In this work a numerical analysis of the hygro-thermal behavior of wood under surface densification is proposed by using a three-dimensional model based on earlier literature approaches that consider the conservation equations for energy, air and water (bound water and vapor) mass. Phenomena of moisture transport include water vapor convection and diffusion and bound water diffusion in the solid wood, while free water is neglected for moisture contents below the fiber saturation point. Local thermodynamic equilibrium is assumed, with a sorption isotherm that couples the moisture contents in the solid and the vapor phase. To perform the simulations the model is implemented in the FEM based code Abaqus as user defined subroutine UEL.
Original languageEnglish
Title of host publicationProceedings
Subtitle of host publication6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012
PublisherVienna University of Technology
Pages8902-8911
ISBN (Electronic)978-3-9503537-0-9
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
EventEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 - Vienna, Austria
Duration: 10 Sep 201214 Sep 2012

Conference

ConferenceEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012
Abbreviated titleECCOMAS 2012
CountryAustria
CityVienna
Period10/09/1214/09/12

Fingerprint

Densification
Wood
Moisture
Water
Vapors
Subroutines
Water vapor
Isotherms
Sorption
Numerical analysis
Conservation
Numerical methods
Compaction
Thermodynamics
Finite element method
Hot Temperature
Fibers
Air
Industry
Temperature

Keywords

  • wood surface densification
  • multiphase models
  • FEM
  • ProperTune

Cite this

Genoese, A., Genoese, A., Fortino, S., & Rautkari, L. (2012). Finite element simulation of the hygro-thermal response of wood during surface densification. In Proceedings: 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012 (pp. 8902-8911). Vienna University of Technology.
Genoese, Andrea ; Genoese, Alessandra ; Fortino, Stefania ; Rautkari, Lauri. / Finite element simulation of the hygro-thermal response of wood during surface densification. Proceedings: 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012. Vienna University of Technology, 2012. pp. 8902-8911
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Genoese, A, Genoese, A, Fortino, S & Rautkari, L 2012, Finite element simulation of the hygro-thermal response of wood during surface densification. in Proceedings: 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012. Vienna University of Technology, pp. 8902-8911, European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012, Vienna, Austria, 10/09/12.

Finite element simulation of the hygro-thermal response of wood during surface densification. / Genoese, Andrea; Genoese, Alessandra; Fortino, Stefania; Rautkari, Lauri.

Proceedings: 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012. Vienna University of Technology, 2012. p. 8902-8911.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - The high temperature process of wood surface densification increases the wood density in the transverse direction under compression. This process could be of great interest for industry and represents the topic of recent research efforts addressed both to experimental studies and to investigate models and numerical methods of simulation. In this work a numerical analysis of the hygro-thermal behavior of wood under surface densification is proposed by using a three-dimensional model based on earlier literature approaches that consider the conservation equations for energy, air and water (bound water and vapor) mass. Phenomena of moisture transport include water vapor convection and diffusion and bound water diffusion in the solid wood, while free water is neglected for moisture contents below the fiber saturation point. Local thermodynamic equilibrium is assumed, with a sorption isotherm that couples the moisture contents in the solid and the vapor phase. To perform the simulations the model is implemented in the FEM based code Abaqus as user defined subroutine UEL.

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Genoese A, Genoese A, Fortino S, Rautkari L. Finite element simulation of the hygro-thermal response of wood during surface densification. In Proceedings: 6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012. Vienna University of Technology. 2012. p. 8902-8911