Limit loads for the plastic bending in plane strain of cantilevers containing rectangular holes under end shear

Slip-line field solutions and upper and lower bounds are given for the plane strain plastic yielding of a rectangular section cantilever containing a rectangular hole subjected to bending with shear, the hole taking varying positions along the longitudinal axis of the cantilever. Using mild steel specimens and an etching technique, both the loads and the modes of deformation at plastic collapse are shown to well authenticate the theoretical results.