Extensive work has been carried out to determine expressions for the critical buckling loads of flat plates under the elementary load cases of shear, compression and bending, and combinations of these three. Existing solutions are based on constant stress levels throughout the plate, but no theoretical solution or design rules exist for more complex situations. Finite element analysis is often therefore used to solve more complicated cases. This paper outlines a programme of work that has been undertaken to compare collapse loads predicted by theoretical, experimental and finite element analysis predicted collapse loads for the case of a flat rectangular plate under combined shear and bending.
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