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1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 2014

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Withdrawal resistance of wood screw in wood-based materials

Joščák P., Langová N., Tvrdovský M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2014

No. 87

90--96

Withdrawal resistance of wood screw in wood-based materials.The aim of this paper is determine the impact of type of wood material and parameters of screws shoulder on withdrawal resistance of wood screw. Mechanical tests were realized in oak solid wood (Quercus robur L.), laminated particle board, and honeycomb board using wood screws and confirmate screw. For evaluation of withdrawal resistance of screws, the load carrying capacity, stiffness, and deformation on the ultimate strength were determined. We also evaluated the failure mode of wood material; in the solid wood it was taken into account the direction of screwing of wood screws relative to grain. The measured and calculated results show that the type of material and method of shoulder screws have the largest influence on the withdrawal resistance of wood screw.