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Roller hemming simulation: State of the art and application limits

 
: Neugebauer, Reimund; Drossel, Welf-Guntram; Rössinger, Markus; Eckert, Alexander; Hecht, Benjamin

:

Larkiola, Jari ; European Scientific Association for Material Forming:
Material Forming ESAFORM 2014 : Selected, peer reviewed papers from the 17th Conference of the European Scientific Association on Material Forming (ESAFORM 2014). May 7-9, 2014, Espoo, Finland
Dürnten: Trans Tech Publications, 2014 (Key engineering materials 611-612)
ISBN: 978-3-03795-801-8
ISBN: 978-3-03835-106-1
pp.1062-1070
International Conference on Material Forming (ESAFORM) <17, 2014, Espoo>
English
Conference Paper
Fraunhofer IWU ()
finite element method; roller hemming simulation; state of the art; application limits; process chain

Abstract
The presented study applied the state of the art in roller hemming simulation on a car body assembly. Corner areas with changing flange lengths are always challenging in case of reaching the quality demands. Thus, the numerical results like e.g. springback, hem thickness, rollin and hem geometry are compared to experimental results. It is shown that the quality of prediction
depends on the system stiffness of the roller hemming device, the geometrical contour of the car body assembly and the consideration of steps in the process chain like stamping and flanging. Finally, the gained cognitions point out challenges for future research in this topic.

: http://publica.fraunhofer.de/documents/N-291032.html