ABSTRACT
Roll forming process has been used to describe a large class of continuous manufacturing process, where a long strip of sheet-metal is deformed into products of desired geometry by passing through a series of rotating mills arranged in tandem (Neugebauer 2007). Since the deformation process is complex, usually cold roll forming has to be developed on an empirical basis from an experimental knowledge (Palumbo 2008). The increased use of advanced high strength steels in the automotive industry has resulted in an increase in formability and wear issues during stamping production. For the successfully stamping experience, the stamping press shop shows that press speeds and production rates often need to be reduced to a minimum. Nowadays, the Finite Element Method (FEM), using ABAQUS is considered to be an effective tool to simulate the roll forming process and stamping process. SGARC 440 has been widely used in many areas (Nefussi 1993). Many researchers have studied the problems that result in forming defects during the manufacturing process (sheet bending). However, which method is better in this kind of sheet bending is still a problem for manufacturing. In order to obtain a deeper understanding of the sheet bending process, many experiments and Finite Element Method (FEM) analyses have been carried out. Based on these outcomes, we analyzed the differences between roll forming and stamping, and its relation to the mechanical properties of the material (McClure 1995).
