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Analysis of Sheet Metal Stamping by a Finite-Element Method
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1978
Year
EngineeringMechanical EngineeringSheet Metal StampingComputer-aided DesignStructural OptimizationMembrane ShellsIsogeometric AnalysisElasticity (Physics)MechanicsContact MechanicSheet MetalMaterials ScienceCoulomb FrictionMechanical ModelingSolid MechanicsMetal FormingMechanical DeformationThin-walled StructureFinite Element MethodStructural MechanicsMechanics Of Materials
On the basis of the nonlinear theory of membrane shells, a general finite-element procedure is developed for calculating the deformations in the stamping of sheet metal by arbitrarily shaped punches and dies. The sheet material is assumed to be elastic-plastic and satisfy a rate-insensitive, Mises-type flow rule taking into account finite deformation, work-hardening and normal anisotropy. Coulomb friction is assumed at the contacting surfaces between sheet and punch and between sheet and die. Numerical results obtained from application of the procedure to the hemispherical punch stretching of circular sheets are compared with existing axisymmetric solutions and experimental data.