Hydroforming processing of sheet metal parts provides a number of advantages over conventional processes including the reduction in the number of parts, and reduction in the tooling and material costs. As a result, the technology has attracted increasing attention in many industries. However, there is still little experience available of both the process and its associated stresses and deformation which limit the application of this technique. The current study has been initiated to gain a better understanding of the fundamentals of the hydroforming process and the limitations on its applicability. The study outlines the stress and deformation distributions when a circular plate is processed by a hydrostatic transverse pressure that causes the plate to deform in the axial direction. The collapse load that leads to excessive and uncontrollable deformation is also determined and a forming limit is established. Experimental verification is also carried out to establish the validity of the analytical results.
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Elkholy, A., Al-Hawaj, O. Collapse Pressure and Strength Analysis of Hydroformed Circular Plates. Int J Adv Manuf Technol 18, 79–88 (2001). https://doi.org/10.1007/s001700170078
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DOI: https://doi.org/10.1007/s001700170078