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Accuracy and precision assesment of stochastic simulation tools for springback variation

de Souza, T. and Rolfe, B. F. 2008, Accuracy and precision assesment of stochastic simulation tools for springback variation, in NUMISHEET 2008 : Proceedings of the 7th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, ETH Eidgenössische Technische Hochschule, Zurich, Switzerland, pp. 539-544.

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Title Accuracy and precision assesment of stochastic simulation tools for springback variation
Author(s) de Souza, T.
Rolfe, B. F.
Conference name International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (7th : 2008 : Interlaken, Switzerland)
Conference location Interlaken, Switzerland
Conference dates 1-5 September 2008
Title of proceedings NUMISHEET 2008 : Proceedings of the 7th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes
Editor(s) Hora, Pavel
Publication date 2008
Conference series International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes
Start page 539
End page 544
Total pages 6
Publisher ETH Eidgenössische Technische Hochschule
Place of publication Zurich, Switzerland
Summary The sheet forming industry is plagued by inherent variations in its many input variables, making quality control and improvements a major hurdle. This is particularly poignant for Advanced High Strength Steels (AHSS), which exhibit a large degree of property variability. Current FE-based simulation packages are successful at predicting the manufacturability of a particular sheet metal components, however, due to their numerical deterministic nature are inherently unable to predict the performance of a real-life production process. Though they are now beginning to incorporate the stochastic nature of production in their codes. This work investigates the accuracy and precision of a current stochastic simulation package, AutoForm Sigma v4.1, by developing an experimental data set where all main sources of variation are captured through precise measurements and standard tensile tests. Using a Dual Phase 600Mpa grade steel a series of semi-cylindrical channels are formed at two Blank Holder Pressure levels where the response metric is the variation in springback determined by the flange angle. The process is replicated in AutoForm Sigma and an assessment of accuracy and precision of the predictions are performed. Results indicate a very good correspondence to the experimental trials, with mean springback response predicted to within 1 ° of the flange angle and the interquartile spread of results to within 0.22°.
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ISBN 9783909386802
Language eng
Field of Research 091006 Manufacturing Processes and Technologies (excl Textiles)
Socio Economic Objective 861205 Sheet Metal Products
HERDC Research category E1 Full written paper - refereed
Copyright notice ©2008, ETH Eidgenössische Technische Hochschule
Persistent URL http://hdl.handle.net/10536/DRO/DU:30018222

Document type: Conference Paper
Collections: Centre for Material and Fibre Innovation
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.