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A 3D moisture-stress FEM analysis for time dependent problems in timber structures

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Abstract

This paper presents a 3D moisture-stress numerical analysis for timber structures under variable humidity and load conditions. An orthotropic viscoelastic-mechanosorptive material model is specialized on the basis of previous models. Both the constitutive model and the equations needed to describe the moisture flow across the structure are implemented into user subroutines of the Abaqus finite element code and a coupled moisture-stress analysis is performed for several types of mechanical loads and moisture changes. The presented computational approach is validated by analyzing some wood tests described in the literature and comparing the computational results with the reported experimental data.

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Authors and Affiliations

  1. VTT Technical Research Centre of Finland, P.O.Box 1000, 02044, VTT, Finland

    Stefania Fortino, Florian Mirianon & Tomi Toratti

Authors
  1. Stefania Fortino
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  2. Florian Mirianon
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  3. Tomi Toratti
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Correspondence to Stefania Fortino.

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Fortino, S., Mirianon, F. & Toratti, T. A 3D moisture-stress FEM analysis for time dependent problems in timber structures. Mech Time-Depend Mater 13, 333–356 (2009). https://doi.org/10.1007/s11043-009-9103-z

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  • DOI: https://doi.org/10.1007/s11043-009-9103-z

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