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Saturday 20 August 2016

Finite element modelling of inclined screwed timber to timber connections with a large gap between the elements

Published Date
Volume 74, Issue 3, pp 467–471

Title 
Finite element modelling of inclined screwed timber to timber connections with a large gap between the elements

  • Author 
  • Coralie Avez
  • Erik Serrano
  • Laurent Léoskool

  • Brief Original
    DOI: 10.1007/s00107-015-1002-1

    Cite this article as: 
    Avez, C., Descamps, T., Serrano, E. et al. Eur. J. Wood Prod. (2016) 74: 467. doi:10.1007/s00107-015-1002-1

    Abstract

    Since the 80’s, Johanssen’s Yield Theory has been adapted to fit new design practices: fastening of timber elements with a layer of insulation (or gap) between the elements or fastening with inclined fasteners. However no rules exist for connections with large gaps (up to 500 mm) and inclined fasteners. The behaviour of screwed connections (timber/large gap/timber) is modelled using an orthotropic material, cohesive surface, Hill criterion and a fictitious material that wraps the screw and models a complex medium where steel and wood interact. The calibrated FE model is finally compared to experimental results.

    References

    1. Descamps T, Lalisse D, Datoussaïd S (2009) 3D FEM modeling of slender laterally loaded timber fasteners. In: Curran Associates (ed) Proceedings of the 12th international conference on fracture, July 12–17, Ottawa, Canada
    2. Dietsch P, Brandner R (2015) Self-tapping screws and threaded rods as reinforcement for structural timber elements—A state-of-the-art report. Constr Build Mater 97:78–89. doi:10.1016/j.conbuildmat.2015.04.028 (special issue: Reinforcement of Timber Structures)
    3. Gabriela T, Erik S, René S (2011) State-of-the-art review on timber connections with glued-in steel rods. Mater Struct 44(5):997–1020CrossRef
    4. Gonzales E, Tannert T, Avez C (2015) Timber joints with multiple glued-in steel rods. In: Proceedings of the third international conference on adhesive bonding, Porto
    5. Jockwer R (2014) Structural behaviour of glued laminated timber beams with unreinforced and reninforced notches. PhD thesis, ETH Zurich
    6. Jockwer R, Steiger R, Frangi A (2014) Fully threaded self-tapping screws subjected to combined axial and lateral loading with different load to grain angles. In: Aicher S, Reinhardt HW, Garrecht H (eds) Materials and joints in timber structures, vol 9. Springer, The Netherlands, pp 265–272CrossRef
    7. Lathuilliére D, Bléron L, Descamps T, Bocquet JF (2015) Reinforcement of dowel type connections. Constr Build Mater 97:48–54. doi:10.1016/j.conbuildmat.2015.05.088(special issue: Reinforcement of Timber Structures)
    8. Statens Byggeforskningsinstitut - Danish Building Research (1994) Trækonstruktioner: Beregning. SBIanvisning - Danish Standard (in Danish)
    9. Tomasi R, Crosatti A, Piazza M (2010) Theoretical and experimental analysis of timber-to-timber joints connected with inclined screws. Constr Build Mater 24(9):1560–1571CrossRef

    For further details log on website :
    http://link.springer.com/article/10.1007/s00107-015-1002-1

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