9. Summary of results

The results found with*Code_Aster* and DEFORMATION: “SIMO_MIEHE” and: “” are very satisfactory with error percentages less than \(\text{0.4\%}\) on the stress and \(\text{1.2\%}\) on the work-hardening variable. For plate and shell elements the use of DEFORMATION: “PETIT_REAC” gives satisfactory results with error percentages of \(\text{3\%}\) on force or stress and less than \(\text{0.7\%}\) on the work hardening variable.