Comparative study of artificial neural network and physics-informed neural network application in sheet metal forming

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Comparative study of artificial neural network and physics-informed neural network application in sheet metal forming

MUNZONE Francesco, HAZRATI Javad, HAKVOORT Wouter, VAN DEN BOOGAARD Ton

Abstract. Accurate prediction of the resultant geometry in sheet metal forming simulation is necessary to achieve zero-defect production. To quantify the effect of process parameters on the final geometry, numerical methods are used to simulate the process outputs for a given set of process variables. Finite element methods are employed in process optimization and design exploration. However, these computationally expensive models are unhelpful for process control applications. Surrogate models allowing fast prediction of resultant geometry or stress distribution can be plausible solutions. In the current study, we propose a sequential surrogate model to fit the stress field as a function of the process variable and the initial spatial coordinates. The framework is composed of two surrogate models. First, an artificial neural network (ANN) evaluates the displacement and the strain. Then, a second surrogate is employed to fit the stress using input strain and displacement. Here, ANN and physics-informed neural networks (PINN) are compared concerning prediction accuracy for the second surrogate model. The PINN is enhanced with the equilibrium equations. The developed method is demonstrated using a v-bending process. The results show that both surrogate models return good approximations, with ANN showing slightly better results.

Keywords
Surrogate Modeling, Physics-Informed Neural Networks, Metal-Forming

Published online 4/24/2024, 11 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: MUNZONE Francesco, HAZRATI Javad, HAKVOORT Wouter, VAN DEN BOOGAARD Ton, Comparative study of artificial neural network and physics-informed neural network application in sheet metal forming, Materials Research Proceedings, Vol. 41, pp 2278-2288, 2024

DOI: https://doi.org/10.21741/9781644903131-251

The article was published as article 251 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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