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This paper aims to characterize the force-deformation response of through-tenon wood-wood connections subjected to tensile loads. Four beech LVL timber specimen groups with variations in the fiber orientation, and the tab insertion angle (45°, and 60°) are tested. All of the specimens experienced a brittle failure mode. The 45°-angled specimens provide a more secure interlocking mechanism compared to the 60°-angled specimens. Overall, fiber-parallel 60°-angled specimens have the highest yield and ultimate strengths. Increasing the insertion angle from 45° to 60° decreases the ductility and slip modulus. Changing the fiber orientation from parallel to perpendicular does not have a significant effect on the slip modulus and ductility, however, there is a decrease in the yield and ultimate strengths. Finally, based on the overall results from the experiments, the joints are classified as having low ductility.
Yves Weinand, Aryan Rezaei Rad, Henry V. Burton