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A simplified approach for sheet forming processes design. (English) Zbl 0809.73045

A new approach is developed to improve sheet forming parts and sheet forming processes design. In order to apply classical optimization methods, an energetic criterion is defined. With a geometrical definition of sheet forming processes, it is shown how to use this criterion to find the optimal displacement path between a flat blank and the part shape. Then, the classical assumptions of rigid-plastic behaviour and of thin shell geometry are introduced. This paper concludes with numerical applications of the approach and analysis of formability criterion applications.

MSC:

74P99 Optimization problems in solid mechanics
74C15 Large-strain, rate-independent theories of plasticity (including nonlinear plasticity)
74C20 Large-strain, rate-dependent theories of plasticity
74S05 Finite element methods applied to problems in solid mechanics
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