Abstract
Increasing use of new technologies in automotive and aircraft applications requires intensive research and developments on sheet metal forming processes. This study focuses on the assessment of sheet hydroforming, hydro‐mechanical deep drawing and conventional deep‐drawing processes by performing a systematic analysis by numerical simulations. Circular, elliptic, rectangular and square cross‐section cups have been selected for the geometry spectrum. Within the range of each cross section, depth, drawing ratio and fillet radii have been altered systematically. St14 stainless steel has been used as the material throughout the study. The deformation behavior has been described by an elasto‐plastic material model and all numerical simulations have been carried out by using a dynamic‐explicit commercial finite element code. During the analyses each workpiece is produced by the three competing processes. The analyses results such as sheet thickness distribution, necking, forming of radii etc., are used for asse...
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