Effect of axial loading on plastic buckling of long strips under pure shear

Abstract

A plastic buckling analysis is presented for infinitely long shear panels in the presence of tensile or compressive loading acting along the principal directions of the plate. Assuming a homogeneous pre-buckling stress state with uniform axial and shear stresses, the critical state at buckling is determined by employing a bifurcation-of-equilibrium approach. The material is assumed elastic-plastic with non-linear strain hardening characteristics. Interaction buckling curves are presented for both flow and deformation theories of plasticity.