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

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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.",
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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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AU - Genoese, Andrea

AU - Fortino, Stefania

AU - Hradil, Petr

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