Abstract
Due to enhanced properties such as higher strength-to-weight ratio and corrosion resistance, bimetallic material is used in forming cylindrical shells for pressure vessels and aerospace vehicles. These bimetallic shells are generally manufactured through a three-roller bending process. Springback is an important criterion which causes a change in radius after bending. Prediction of the final radius after sprinback helps in the reduction of the number of passes while bending the plate to a particular radius. Precise determination of loaded radius is essential for the accurate prediction of the final radius and sprinback after bending. The present study describes mathematical modelling to determine the loaded radius during three-roller bending processes, which is further used to predict the final radius after springback. The effect of the top roller radius has been included in the model for determining the loaded radius precisely. This model is verified with reported results and the effect of process parameters on the loaded radius and springback has been studied.
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