Some numerical slipline field solutions for drawing through circular dies |
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Authors: | E.W. Shimmin P.L.B. Oxley |
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Affiliation: | School of Mechanical and Industrial Engineering, University of New South Wales, Australia |
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Abstract: | A method is presented for the generation of slipline fields and their hodographs for the problem of plane strain drawing a rigid, perfectly plastic (rpp) material through frictionless circular dies. An optimization scheme is given, using a readily available multivariable optimization routine, which will reliably adjust the shape of an assumed slipline to ensure hodograph convergence. A number of programme runs using different geometries show some interesting oscillatory variations in the computed stress distributions along the die surface and across the exit slipline. |
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