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[1] Harte, A.M. & Baylor, G., Structural evaluation of castellated timber I-joists. Engineer-ing Structures, 33, pp. 3748–3754, 2011.
[2] Baylor, G. & Harte, A.M., Finite element modelling of castellated timber I-joists. Construction and Building Materials, 47, pp. 680–688, 2013.
[3] Ellobody, E., Nonlinear analysis of cellular steel beams under combined buckling modes. Thin-Wall Structures, 52, pp. 66–79, 2012.
[4] Liu, T.C.H. & Chung, K.F., Steel beams with large web openings of various shapes and sizes: finite element investigation. Journal of Construction Steel Research, 59, pp. 1159–1176, 2003.
[5] Zirakian, T. & Showkati, H., Distortional buckling of castellated beams. Journal of Constructional Steel Research, 62, pp. 863–871, 2006.
[6] Kerdal, D. & Nethercott, D.A., Failure modes for castellated beams. Journal of Con-structional Steel Research, 4, pp. 295–315, 1984.
[7] Raftery, G.M. & Harte, A.M., Nonlinear numerical modelling of FRP reinforced glued laminated timber. Composites Part B, 52, pp. 40–50, 2013.
[8] Raftery, G., Harte, A. & Rodd, P., Qualification of wood adhesives for structural soft-wood glulam with large juvenile wood content. Journal of the Institute of Wood Science, 18(1), pp. 24–34, 2008.
[9] Raftery, G., Harte, A. & Rodd, P., Bond quality at the FRP-wood interface using wood laminating adhesives. International Journal of Adhesion Adhesives, 29(2), pp. 101–110, 2009.
[10] Khelifa, M., Lahouar, M.A. & Celzard, A., Flexural strengthening of finger-jointed Spruce timber beams with CFRP. Journal of Adhesion Science and Technology, 29(19), pp. 2104–2116, 2015.
[11] Khelifa, M., Auchet, S., Méausoone, P.J. & Celzard, A., Finite element analysis of flexural strengthening of timber beams with Carbon Fibre-Reinforced Polymers. Engineering Structures, 101, pp. 364–375, 2015.
[12] Abaqus. Theory manual. Version 6.14. Providence, RI: Dassault Systèmes Simulia Corp.; 2016.
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Open Access
Research article

Modelling of Timber I-Beams in Bending

M. Li1,
V. D. Thi1,
M. Khelifa2,
M. El Ganaoui1
1
University of Lorraine, LERMAB, EA 4370, IUT de Longwy, 54400 Cosnes et Romain, France
2
University of Lorraine, LERMAB, EA 4370, 27 rue Philippe Séguin, CS 60036, 88026 Epinal, France
International Journal of Computational Methods and Experimental Measurements
|
Volume 5, Issue 6, 2017
|
Pages 821-833
Received: N/A,
Revised: N/A,
Accepted: N/A,
Available online: 10-31-2017
View Full Article|Download PDF

Abstract:

A 3D Finite Element (FE) model has been developed, which accounted the geometric nonlinearity of flange and web portions of I-beams. The nonlinear FE model was reviewed against tests on castellated timber beams having a web with hexagonal holes. Load carrying capacity, load-deflection responses and failure modes for castellated beams in flexure were predicted and compared to the experimental results. An additional parametric study involving two different web opening shapes (circular and rectangular) was performed using the presented FE model to study the effects of the change of shapes of holes in web portions on the strength and buckling behaviour of castellated beams in bending. The parametric study has shown that castellated timber beams failing due to web-post buckling modes exhibited a strong decrease in the initial load capacity.

Keywords: Bending Test, Buckling Behaviour, FE Model, Geometric Nonlinearity, Parametric Study, Timber I-Beams
References
[1] Harte, A.M. & Baylor, G., Structural evaluation of castellated timber I-joists. Engineer-ing Structures, 33, pp. 3748–3754, 2011.
[2] Baylor, G. & Harte, A.M., Finite element modelling of castellated timber I-joists. Construction and Building Materials, 47, pp. 680–688, 2013.
[3] Ellobody, E., Nonlinear analysis of cellular steel beams under combined buckling modes. Thin-Wall Structures, 52, pp. 66–79, 2012.
[4] Liu, T.C.H. & Chung, K.F., Steel beams with large web openings of various shapes and sizes: finite element investigation. Journal of Construction Steel Research, 59, pp. 1159–1176, 2003.
[5] Zirakian, T. & Showkati, H., Distortional buckling of castellated beams. Journal of Constructional Steel Research, 62, pp. 863–871, 2006.
[6] Kerdal, D. & Nethercott, D.A., Failure modes for castellated beams. Journal of Con-structional Steel Research, 4, pp. 295–315, 1984.
[7] Raftery, G.M. & Harte, A.M., Nonlinear numerical modelling of FRP reinforced glued laminated timber. Composites Part B, 52, pp. 40–50, 2013.
[8] Raftery, G., Harte, A. & Rodd, P., Qualification of wood adhesives for structural soft-wood glulam with large juvenile wood content. Journal of the Institute of Wood Science, 18(1), pp. 24–34, 2008.
[9] Raftery, G., Harte, A. & Rodd, P., Bond quality at the FRP-wood interface using wood laminating adhesives. International Journal of Adhesion Adhesives, 29(2), pp. 101–110, 2009.
[10] Khelifa, M., Lahouar, M.A. & Celzard, A., Flexural strengthening of finger-jointed Spruce timber beams with CFRP. Journal of Adhesion Science and Technology, 29(19), pp. 2104–2116, 2015.
[11] Khelifa, M., Auchet, S., Méausoone, P.J. & Celzard, A., Finite element analysis of flexural strengthening of timber beams with Carbon Fibre-Reinforced Polymers. Engineering Structures, 101, pp. 364–375, 2015.
[12] Abaqus. Theory manual. Version 6.14. Providence, RI: Dassault Systèmes Simulia Corp.; 2016.
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Li, M., Thi, V. D., Khelifa, M., & El Ganaoui, M. (2017). Modelling of Timber I-Beams in Bending. Int. J. Comput. Methods Exp. Meas., 5(6), 821-833. https://doi.org/10.2495/CMEM-V5-N6-821-833
M. Li, V. D. Thi, M. Khelifa, and M. El Ganaoui, "Modelling of Timber I-Beams in Bending," Int. J. Comput. Methods Exp. Meas., vol. 5, no. 6, pp. 821-833, 2017. https://doi.org/10.2495/CMEM-V5-N6-821-833
@research-article{Li2017ModellingOT,
title={Modelling of Timber I-Beams in Bending},
author={M. Li and V. D. Thi and M. Khelifa and M. El Ganaoui},
journal={International Journal of Computational Methods and Experimental Measurements},
year={2017},
page={821-833},
doi={https://doi.org/10.2495/CMEM-V5-N6-821-833}
}
M. Li, et al. "Modelling of Timber I-Beams in Bending." International Journal of Computational Methods and Experimental Measurements, v 5, pp 821-833. doi: https://doi.org/10.2495/CMEM-V5-N6-821-833
M. Li, V. D. Thi, M. Khelifa and M. El Ganaoui. "Modelling of Timber I-Beams in Bending." International Journal of Computational Methods and Experimental Measurements, 5, (2017): 821-833. doi: https://doi.org/10.2495/CMEM-V5-N6-821-833
Li M.， Thi V. D.， Khelifa M.， et al. Modelling of Timber I-Beams in Bending[J]. International Journal of Computational Methods and Experimental Measurements， 2017， 5(6)： 821-833. https://doi.org/10.2495/CMEM-V5-N6-821-833