Mechanism of Wrinkling in Deep Drawing of Sheet Metals : 2nd Report, Experiment of Flat Die Drawing

Abstract

For checking the validity of the proporsed theory, an experimental investigation of wrinkles arising in flange part during deep drawing of aluminium blanks is reported. The buckling deformation, number of wrinkles, critical and limited conditions of wrinkling were studied in case with and without blank holder by the use of spring respectively. In each case, the comparison of the experimental results with the theoretical predictions was found sastisfactory.