Optimisation des forces de retenue pour le controle de Ia qualite des toles minces embouties
Keywords:
Sheet metal forming, Inverse Approach, Drawbead design, Sensitivity analysis, Restraining forcesAbstract
In the deep drawing process, drawbead restraining forces can control the material ftow and thus the part quality in the sheet forming process. The Inverse Approach ( I.A.) developed at UTC can be used for sheet forming simulation more efficiently than incremental methods. This I.A. is combined with a Sequential Quadratic Programming (SQP) algorithm to optimize the restraining forces in order to avoid necking and wrinkling. This optimization procedure seems to be Vel}' efficient due w the simplified assumptions of the I.A. and the analytical sensitivity analysis.
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