Abstract
This article examines the localized and diffuse bifurcations of deformation in an incompressible circular cylinder subjected to axisymmetric loading consisting of the tangential-subloading surface model. The analysis considers the conditions for shear band formation, diffuse buckling formation, and the long and short wavelength limits of diffuse buckling modes in relation to material properties and stress. The effects of the normal-yield ratio describing the degree of approach to the normal-yield state and the tangential-plastic strain rate due to the tangential-stress rate effect on the diffuse bifurcations are discussed in details. It is revealed that the normal-yield ratio and the tangential strain rate influence the onset of diffuse bifurcation.
