DefinePK

Abstract

This paper presents a review of finite element analysis of stretch flanging process and its finite element simulation, finite element formulation and finite element method (FEM) based parametric studies and their results. Stretch flanging process is secondary sheet metal forming process which is widely used in conjunction with other sheet metal forming process in sheet metal forming industry. It is used for making of automotive components and complex panels. In past researchers had worked on the area of finite element analysis of stretch flanging process in terms of development of FEM based computer programs and by using different commercial FEM software packages. It is observed that majority of finite element simulation for stretch flanging processes have employed explicit dynamic FEM approach. It is also found from FEM based parametric studies that geometrical parameters have greater influence upon the formability of stretch flanging process as compared to material parameters. Besides this, it is also observed that for manufacturing of stretch flange parts and components ferrous alloys were used in past, whereas aluminum alloys being used commonly in present scenario for obtaining corrosion free and lightweight with increased strength parts. Hence, it is found that analysis based on finite element method is a powerful, accurate and efficient technique for better designing of stretch flanging process.