Shear Buckling of Isotropic Panels – Post 4 – Panel with a Hole
You can read the first three posts in this series here:
There are limited options for dealing with a hole in a shear web. There is a often used ESDU reference for this situation. ESDU sheets are a commercial product and unless you, or your organization have paid for them, you should not use them.
There is a NASA reference that gives the same shear buckling reduction factors as the ESDU sheet (NASA-CR-132548) and also gives the experimental basis for the reduction and correlation with analysis. As with the ESDU methods the method is limited to a square shear panel with a central circular hole that has no reinforcement. We also have extrapolated the curve down to a larger d/b ratio:
Further reading on this subject does indicate that this approach is appropriate or conservative for a central, circular hole in rectangular shear panels.
As usual we have created a spreadsheet for this method.
Remember that the reduction effect of a hole should be applied to the elastic buckling allowable before material plasticity has been accounted for.
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