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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    title = "Finite element simulation of the hygro-thermal response of wood during surface densification",
    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.",
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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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    AU - Fortino, Stefania

    AU - Rautkari, Lauri

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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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    KW - multiphase models

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    KW - ProperTune

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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