Radial return method applied in thick-walled cylinder analysis

The radial return method for elasto-plastic constitutive equations in the special case of analysis of a thick-walled cylinder is presented. Sensitivity study concerning the integration step size was performed analytically for the specified case. This simple model was also utilized in the adjustment study of nonlinear solution strategies as a preliminary phase of FEM investigations of high pressure reactors. The robustness and step-size insensitivity of this integration method was proved and efficient solution strategies were chosen.