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Optimal process design in steady-state metal forming by finite element method—I. Theoretical considerations

✍ Scribed by M.S. Joun; S.M. Hwang

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
629 KB
Volume
33
Category
Article
ISSN
0890-6955

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✦ Synopsis

A new approach to optimal process design in steady-state metal forming is presented. In the approach, optimal process design problems are mathematically formulated and solved using a penalty rigidviscoplastic finite element method as a tool for carrying out necessary calculations for optimization. The basic formulation is presented and the solution procedure is described with the emphasis on the method of calculating the design sensitivities. The accuracy of the design sensitivities thus obtained is assessed by a series of numerical tests. An iterative scheme for optimizing the design variables based on the predicted design sensitivities is also given.

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