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A two-pronged approach for the assessment of springback variability for sheet metal forming applications

par Lebon, Jérémy ;Le Quilliec, Guénhaël;Filomeno Coelho, Rajan ;Breitkopf, Piotr ;Villon, Pierre F.
Référence Key engineering materials, 554-557, page (957-965)
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

Springback assessment for sheet metal forming processes is a challenging issue which requires to take into account complex phenomena (physical non linearities and uncertainties). We highlight that the stochastic analysis of metal forming process requires both a high precision and low cost numerical models and propose a two-pronged methodology to address these challenges. The deep drawing simulation process is performed using an original low cost semi-analytical approach based on a bending under tension model with a good accuracy for small random perturbations of the physical and process parameters. The springback variability analysis is performed using an efficient stochastic metamodel, namely a sparse version of the polynomial chaos expansion. Copyright © 2013 Trans Tech Publications Ltd.