A procedure for smoothing the experimental values of the flow function ψ in axisymmetric extrusion through curved boundaries was developed. The analysis was applied to a 45 deg conical die with a 6:1 extrusion ratio and a circular arc of 0.33-in. radius and 0.033-in. land at the exit section. An analytical expression of ψ in terms of r and z was obtained and used in the calculation of velocity and strain rate components in axisymmetric extrusion of a superplastic of the eutectic of lead–tin. The stress components were obtained from the known values of the strain rates by considering equilibrium and plasticity equations and material properties.
Computer-Aided Visioplasticity Solution to Axisymmetric Extrusion Through Curved Boundaries
A. H. Shabaik
Materials Department, School of Engineering and Applied Sciences, University of California, Los Angeles, Calif.
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Shabaik, A. H. (November 1, 1972). "Computer-Aided Visioplasticity Solution to Axisymmetric Extrusion Through Curved Boundaries." ASME. J. Eng. Ind. November 1972; 94(4): 1225–1230. https://doi.org/10.1115/1.3428343
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