The report describes tests on connections featuring self-drilling screws and gaps between the connected parts. Gaps typically occur when using inserts of a smaller dimension that the overlapping section, e.g. a tube. In such connections, the screws are subjected to the combined actions of shear and bending. University of Sydney Research Report R872, July 2006, by M.R. Bambach and K.J.R. Rasmussen.
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