Analysis of Effect of Upper Die Radius and Limit Drawing Ratio in Deep Drawing Processes Using Finite Element Method

Abstract

The objective of this study is to analyze the effects of upper die radius and limit drawing ratio for
the deep drawing process in terms of stress and strain distribution. The analysis is performed through the use
stress and strain distribution. The analysis is performed through the use of a simulation model based on the
finite element method. In the model, a sample of a circular aluminum sheet with an initial diameter of 140
mm and a thickness of 0.292 mm is used. The drawing ratio between the initial diameter and the diameter
after the process is chosen to be 1.57: 1.33. Then, the sheet that has gone through the deep drawing process
will become a cylindrical shape with diameters of 89 mm and 105 mm and the lengths are 34 mm and 31 mm,
respectively. The results of the simulation reveal that the factors that have an impact on street and strain
distribution are blank holder force, material’s model, and friction force. The results also suggest the
relationship between stress and strain and stroke and punch load.