Uticaj nemonotonosti dvofaznih procesa deformisanja na graničnu deformabilnost tankih limova

Abstract

This paper compares thin sheet metals forming limit curves obtained by two theoretical methods with the results obtained experimentally. On the basis of micro-structure decohesion theory and "combined quasi-theoretical" approach both we created computer programs which enable a relatively simple generation of forming limit curves by using just a few basic characteristics of the material and the forming process. The experiment for obtaining the limit forming curves was set up in a similar way. A comparative analysis of theoretical and experimental results is given in the paper.