APPLICATION OF MULTI-CRITERIA OPTIMISATION IN THE DETERMINATION OF METAL WORK-HARDENING CURVE BASED ON VARIOUS PLASTOMETRIC TESTS

摘要

Application of multi-criteria optimisation in inverse analysis has been presented. The proposed approach enables performing of the inverse analysis simultaneously for various types of plastometric tests, in which different states of stress are present. Calculations were made using results of the plane strain compression tests in channel dies and of compression of cubes and cylindrical samples. Methods for solving multi-criteria problem have been described. The simplex method was applied for the optimisation, and the direct problem was solved using the ABAQUS/Standard FEM simulation software.