Practical Evaluations of the Convenient Identification Method of Metal Material Mechanical Properties Based on Micro to Milli Indentation Test

－Applicability Verification by Applying Press Working Process－

Abstract

   For the purpose of a verification of an estimation method that material plasticity parameters are identified by using indentation test and FE analysis, experiment are carried out using the Rockwell testing machine on metal materials. The P-h curve obtained from the experiment and FE analysis, the characteristics of graph has almost the same curve. The material parameters can be identified based on the curve fit using the polynomial function consisting of material parameters. For example, steel metals using in the manufacturing process, the estimation of the work hardening parameters and the elastic properties were almost matched with the results of the tensile tests. Furthermore, the shapes of the actual drawing press and plastic deformation FE analysis using the material parameters of this identification are matched within the allowable range of profile error.