Application of Abductive Network and FEM to Predict the Optimal Blank Contour of Elliptic Cylindrical Cup in Deep Drawing

In this paper, the finite element method is employed in conjunction with the abductive network to predict the optimum blank contour of elliptic cylindrical cup with ear-less in deep drawing. The earring behavior of the formed cup is caused primarily by planar anisotropy in the sheet. Different cup heights combined with various aspect ratios of the elliptic cylindrical cup are taken into account as the process parameters in this study. A finite element-based code is utilized to investigate the material flow characteristics under different process parameters, and the abductive network is then employed to synthesize the data sets obtained from numerical simulations, thus establishing a prediction model. From the prediction model, an optimal blank contour for producing an elliptic cylindrical cup with ear-less can be found.