TESTS OF 10-INCH 24S-T ALUMINUM-ALLOY SHEAR PANELS WITH l 1/2-INCH HOLES II - PANELS HAVING HOLES WITH NOTCHED EDGES

摘要

In a previous investigation of shear panels of 24S-T aluminum alloy, it had been found that yielding of the material almost eliminates the stress concentration around small holes before failure takes place and that reinforcing rings consequently effect no significant improvement in the static strength of the panel. The present tests established the fact that the stress concentration around such holes is increased very materially by the presence of a notch on certain parts of the circumference of the hole and that reinforcing rings effectively reduce this additional stress concentration.