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A method for validation of finite element forming simulation on basis of a pointwise comparison of distance and curvature

 
: Dörr, D.; Joppich, T.; Schirmaier, F.; Mosthaf, T.; Kärger, L.; Henning, F.

:

Chinesta, F. ; American Institute of Physics -AIP-, New York:
19th International ESAFORM Conference on Material Forming 2016. Proceedings : 27-29 April 2016, Nantes, France
Woodbury, N.Y.: AIP, 2016 (AIP Conference Proceedings 1769)
ISBN: 978-0-7354-1427-3
Art. 170011, 7 pp.
International Conference on Material Forming (ESAFORM) <19, 2016, Nantes>
English
Conference Paper
Fraunhofer ICT ()

Abstract
Thermoforming of continuously fiber reinforced thermoplastics (CFRTP) is ideally suited to thin walled and complex shaped products. By means of forming simulation, an initial validation of the producibility of a specific geometry, an optimization of the forming process and the prediction of fiber-reorientation due to forming is possible. Nevertheless, applied methods need to be validated. Therefor a method is presented, which enables the calculation of error measures for the mismatch between simulation results and experimental tests, based on measurements with a conventional coordinate measuring device. As a quantitative measure, describing the curvature is provided, the presented method is also suitable for numerical or experimental sensitivity studies on wrinkling behavior. The applied methods for forming simulation, implemented in Abaqus explicit, are presented and applied to a generic geometry. The same geometry is tested experimentally and simulation and test results are compared by the proposed validation method.

: http://publica.fraunhofer.de/documents/N-444964.html