Inelastic analysis of plastic compressible materials using the viscoplastic model

In this study the theory of viscoplasticity is employed to provide a unified approach to the problems of plasticity and creep. For plastic compressible materials, the viscoplasticity equation is formulated and the effective range of the equation is discussed. The Drucker-Prager potential is used to describe the plastic compressible yielding and the strength-differential effect. The influence of the strength-differential effect is investigated for a pressurized cylinder.