Model for the prediction of nail withdrawal stiffness Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1v53k2796

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  • An important factor affecting the strength and ultimate load of wood structures is the strength, stiffness and durability of itsjoints. Therefore, the behavior of nailed joints must be given properconsideration when designing and analyzing wood structures. Presently,formulas for determining the strength of nailed joints under withdrawalloads, as outlined in the National Design Specifications and theUniform Building Code, are based on the statistical regression betweenmaximum withdrawal load (W) and the material properties of the wood andnail.New models were developed which predict W, withdrawal resistance(WR) and withdrawal stiffness (WK) based on the actual forces responsiblefor holding the nail in the wood. These include a normal forceto the nail due to the elastically compressed wood around the nail andthe resulting friction between the wood and nail surfaces. Theaccuracy of these models were compared to the accepted formulas in thedesign codes and were found to be superior in predicting W, WR and WK.
  • An important factor affecting the strength and ultimate load of wood structures is the strength
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