Abstract: The Dorn maximum load criterion and the Swift criterion for plastic tensile instability of a flat sheet stretched by in-plane forces are discussed. Both hypotheses are applicable when an initial ...

Abstract: The plastic instability was examined for stretching a plane flat sheet by in-plane tensile principal stresses. Limiting equilibrium or development of nonuniform strains defines the onset of plastic ...

Abstract: The visioplasticity method was used to obtain the complete analysis of stress and strain in axisymmetric extrusions of lead and aluminum at different die angles and friction conditions. The ...