The Effect of Process Parameters on Thickness Distribution in Hydroforming of Conical-Cylindrical Cups

Abdolhamid Gorji; Mohammad Bakhshi-Jooybari; Salman Norouzi; S.J. Hosseinipour; G. Mohammad-Alinejad

doi:10.4028/www.scientific.net/KEM.473.176

Paper Titles

Analysis of Continuous Bending of Thin Plates in Rubber Pad Bending
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Wrinkling Study in Tube Hydroforming Process
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Optimisation of Tubular Hydroforming Processes for Wrinkling and Thinning Control
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Improved Roller Hemming System for High Volume Part Production
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The Effect of Process Parameters on Thickness Distribution in Hydroforming of Conical-Cylindrical Cups
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Combination of Finite-Element and Semi-Analytical Models for Sheet Metal Leveling Simulation
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Analytical-Numerical Solution of Bending Problem of Thin Plates in Rubber Pad Bending
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Influence of Die Materials on the Microstructural Evolution of HSS Sheets in Hot Stamping
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Development of Bionic Design Concepts for Structure Optimisation of Forming Tools According to Production and Stress Constraints
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The Effect of Process Parameters on Thickness Distribution in Hydroforming of Conical-Cylindrical Cups

Abstract:

Forming conical parts is one of the complex and difficult fields in sheet metal forming processes. These parts are normally formed in industry by spinning, explosive forming or multistage deep drawing processes. In this paper, forming pure copper conical–cylindrical cups in the hydrodynamic deep drawing process was studied using finite element (FE) simulation and experiment. In this study, the effect of cone angle and punch tip radius on bursting and thickness distribution of the parts and also the effect of pressure path on thickness distribution were examined. Using the measurements of strains and thickness variations on the cup wall, the quality of the drawn cups was evaluated. The results demonstrated that increasing cone angle will lead to higher drawing ratio and uniform thickness distribution. Also, it was concluded that in the conical-cylindrical part the punch tip radius region is the most critical zone. At this zone, the more the cone angle the less the possibility of tearing is. In addition, with increasing punch tip radius it could be seen that the thickness reduction decreases.