Analysis of the Residual Stresses Distribution in the Case of Drawn Parts Made from Steel Sheets

The residual stresses that occur in the machined parts after the tools removing are the main cause that determines the springback of the draw parts made from metal sheets. Hence, to investigate this instability phenomenon it must be known the state of residual stresses developed in the part by its machining. But, the experimental investigation of the residual stress distribution in the case of draw parts is a difficult problem because of complexity of the forming operations and formed parts geometry. A solution to the problem can be the simulation of the forming process and residual stress distribution. The present paper investigates the distribution of the residual stresses by simulating the drawing process in the case of different parts made from steel sheets.