For the purpose of a verification of an estimation method that material plasticity parameters are identified by using indentation test and FE analysis, experimental tests are carried out by the Rockwell testing machine on metal materials. First, the P-h curves of the indentation are determined by experimental test. Second, FE analysis of the indentation test assuming plastic hardening behavior is specified by the stress-strain curve. Comparing the P-h curve obtained from the experiment test and FE analysis, the process of loading characteristics has almost the same curve. The material parameters can be identified based on the curve fit using the polynomial function consisting of material parameters. The best solution is determined by using the response surface methodology. Comparing the identified parameters obtained from the tensile and compress test, the elastic and plastic material parameters on several metal materials are matched within the allowable range of practical values.
