On the effects of geometric parameters on springback in sheets of five materials subjected to air vee bending

Air vee bending is a three point bending process. It is versatile and a number of different bend geometries may be produced using the same set of tools. Bottoming is absent and hence springback is high. It is the outcome of the complex interaction between the material properties and the geometry of the bend. The present work aims at studying this interaction using 24 factorial design of experiments for each of the five different materials and analysing the springback data using statistical models. Significance of the factors (which include material properties and geometric parameters) and their interactions is thus established and the physical interpretation of the results has been given.