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Comparison between regression and artificial neural network for prediction model of flexibly reconfigurable roll forming process

  • Ji-Woo Park
  • Beom-Soo KangEmail author
ORIGINAL ARTICLE
  • 25 Downloads

Abstract

Flexibly reconfigurable roll forming (FRRF) is a novel sheet metal forming technology in which sheet metal is shaped into the desired curvature using reconfigurable rollers and gaps. However, FRRF has a disadvantage in terms of predicting the forming result because this technology produces two-dimensional curved surfaces from one-dimensional curved lines. A previous study used regression analysis to predict the longitudinal curvature results of the FRRF process. In this study, a prediction model using machine learning was developed. A comparative investigation with an existing regression model was conducted using an artificial neural network (ANN) model based on machine learning. Sample data were obtained via numerical simulation, and the target surfaces were convex and saddle-shaped. To confirm the validity of each model, a goodness-of-fit test was performed. Further, to confirm the predictability of each model, the same amount of random data was extracted and a random sample test was performed. In the case of the saddle-shaped surface, the ANN model showed a predominantly high predictability, but in the case of the convex shape surface, the regression model performed better. The ANN model has potential to be used in practical applications such as skin structure forming for aircraft and shipbuilding.

Keywords

Flexibly reconfigurable roll forming Artificial neural network Comparative study Numerical simulation 

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Notes

Funding information

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) through the Engineering Research Center (No. 2012R1A5A1048294). Also, this work was supported by the Human Resource Training Program for Regional Innovation and Creativity through the Ministry of Education and National Research Foundation of Korea (NRF-2015H1C1A1035499).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Aerospace EngineeringPusan National UniversityBusanSouth Korea
  2. 2.ERC/ITAFPusan National UniversityBusanSouth Korea

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