https://doi.org/10.1051/epjconf/20100615001
Experimental study of surface defects on automotive doors during flanging and their numerical prediction
1
Université de Bretagne-Sud, LIMATB, rue de Saint
Maudé, BP
92116, 56321
Lorient,
France
2
Université européenne de Bretagne,
France
3
PSA Peugeot Citröen, DTI/DITV/ICPE/CEMB,
BP 95217,
F-35652
Le Rheu,
France
a e-mail: pierre-yves.manach@univ-ubs.fr
Surface defects can develop on automotive exterior panels after drawing and flanging steps, during springback and may alter significantly the vehicle quality. These defects are characterized by a depth below 0.5 mm and are then difficult to detect or predict numerically. This study focuses on a L-shaped part designed on purpose to reproduce at a small scale surface defects that occur after flanging. Dimensions of these defects are measured from profiles obtained with a tridimensional measuring machine. The investigation of the influence of the flanging height and flanging speed shows than neither of these parameters have impact on the surface defect . The numerical simulation of the flanging process predict the surface defect but with a lower depth than the experimental defect.
© Owned by the authors, published by EDP Sciences, 2010
