A Numerical Approach for the Hygro-Thermal Monitoring of Timber Structures under Environmental Conditions

Alessandra Genoese, Andrea Genoese, Stefania Fortino, Petr Hradil

    Research output: Contribution to journalArticleScientificpeer-review

    3 Citations (Scopus)

    Abstract

    The monitoring of timber structures exposed to natural climate fluctuations during their service life is an important topic for both their serviceability and safety. Numerical methods based on the recent advances in hygro-thermal modelling of wood can integrate the usual sensor-based monitoring techniques by reducing the maintenance costs for timber structures. In this paper, a 3D full coupled analysis based on the multi-Fickian theory with sorption hysteresis of wood is implemented in Abaqus FEM code by defining a new finite element in a user subroutine. To verify the method, the hygro-thermal behaviour of a glulam beam tested in laboratory under variable humidity within a previous research is analysed and the numerical values of moisture content are found to be in agreement with the experimental data. Furthermore, a numerical case-study of a glulam cross section under real climate variations is presented and the related results show the capability of the method to predict the moisture states in each points of the glulam member under continuously variable humidity and temperature.
    Original languageEnglish
    Pages (from-to)786-793
    JournalAdvanced Materials Research
    Volume778
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Timber
    Atmospheric humidity
    Wood
    Moisture
    Monitoring
    Subroutines
    Service life
    Hysteresis
    Sorption
    Numerical methods
    Finite element method
    Sensors
    Costs
    Temperature
    Hot Temperature

    Cite this

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    title = "A Numerical Approach for the Hygro-Thermal Monitoring of Timber Structures under Environmental Conditions",
    abstract = "The monitoring of timber structures exposed to natural climate fluctuations during their service life is an important topic for both their serviceability and safety. Numerical methods based on the recent advances in hygro-thermal modelling of wood can integrate the usual sensor-based monitoring techniques by reducing the maintenance costs for timber structures. In this paper, a 3D full coupled analysis based on the multi-Fickian theory with sorption hysteresis of wood is implemented in Abaqus FEM code by defining a new finite element in a user subroutine. To verify the method, the hygro-thermal behaviour of a glulam beam tested in laboratory under variable humidity within a previous research is analysed and the numerical values of moisture content are found to be in agreement with the experimental data. Furthermore, a numerical case-study of a glulam cross section under real climate variations is presented and the related results show the capability of the method to predict the moisture states in each points of the glulam member under continuously variable humidity and temperature.",
    author = "Alessandra Genoese and Andrea Genoese and Stefania Fortino and Petr Hradil",
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    A Numerical Approach for the Hygro-Thermal Monitoring of Timber Structures under Environmental Conditions. / Genoese, Alessandra; Genoese, Andrea; Fortino, Stefania; Hradil, Petr.

    In: Advanced Materials Research, Vol. 778, 2013, p. 786-793.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - A Numerical Approach for the Hygro-Thermal Monitoring of Timber Structures under Environmental Conditions

    AU - Genoese, Alessandra

    AU - Genoese, Andrea

    AU - Fortino, Stefania

    AU - Hradil, Petr

    PY - 2013

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    AB - The monitoring of timber structures exposed to natural climate fluctuations during their service life is an important topic for both their serviceability and safety. Numerical methods based on the recent advances in hygro-thermal modelling of wood can integrate the usual sensor-based monitoring techniques by reducing the maintenance costs for timber structures. In this paper, a 3D full coupled analysis based on the multi-Fickian theory with sorption hysteresis of wood is implemented in Abaqus FEM code by defining a new finite element in a user subroutine. To verify the method, the hygro-thermal behaviour of a glulam beam tested in laboratory under variable humidity within a previous research is analysed and the numerical values of moisture content are found to be in agreement with the experimental data. Furthermore, a numerical case-study of a glulam cross section under real climate variations is presented and the related results show the capability of the method to predict the moisture states in each points of the glulam member under continuously variable humidity and temperature.

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