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Title: Constructing Surrogate Models for Springback in U-Bending Process
Authors: Bekar, Deniz
Acar, Erdem
Özer, Fırat
Güler, Mehmet Ali
Keywords: U-bending
Surrogate models
Issue Date: 2012
Publisher: Trans Tech Publications Ltd
Source: 14th International Conference on Advances in Materials and Processing Technologies (AMPT) -- JUL 13-16, 2011 -- Istanbul, TURKEY
Series/Report no.: Advanced Materials Research
Abstract: In this study, surrogate models are constructed to approximate the behavior of simulation models for springback angles, sidewall curl, and sheet thickness reduction in U-bending process. The surrogate-modeling techniques used here are: (i) polynomial response surface (PRS), (ii) Kriging (KR) and (iii) radial basis functions (RBF). While constructing surrogate models, the following procedure is pursued. First, a set of training points is generated using Latin hypercube sampling method, and finite element simulations are performed at these points. Then, surrogate models are constructed utilizing the training data. The accuracies of the surrogate models are evaluated by using the leave-one-out cross validation errors. First-order PRS is found to be most accurate surrogate model for prediction of the springback angles, side wall curl, and sheet thickness reduction.
ISBN: 978-3-03785-346-7
ISSN: 1022-6680
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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