Experimental and Finite Element Studies on Formability of Low Carbon Steel Sheets using Deep Drawing

Abstract One of the commonly used metal forming processes is deep drawing, in which circular blanks are converted into a cup or shell with good surface finish. In this paper, the forming characteristics of Deep Draw Steel (DDS), a low-carbon steel with many engineering and automotive applications, is investigated by deep drawing. The forming limit diagram is a useful concept in favor of characterizing the formability of sheet metal. The present work is aimed to investigate the limiting draw ratio (LDR) and the forming limit diagram during forming for the various punch strokes is examined. The experimental findings such as thickness distribution and thinning limit of the formed cup are compared with the simulation results. Good correlation was obtained between the finite element predicted results and experimental results. Experimental Results shows that best forming characteristic were found at a punch stroke of 50 mm with LDR value of 2.2. Finite Element Analysis model was built using Abaqus/Standard 6.10-1. Von Mises stress distribution for the best forming conditions was analyzed using simulation results.