Physics-aware neural network-based parametric model-order reduction of the electromagnetic analysis for a coated component

Finite element (FE) analysis is one of the most accurate methods for predicting electromagnetic field scatter; however, it presents a significant computational overhead. In this study, we propose a data-driven parametric model-order reduction  (pMOR) framework to predict the scattered electromagneti...

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Bibliographic Details
Published in:Engineering with computers 2024-09
Main Authors: Lee, SiHun, Kang, Seung-Hoon, Lee, Sangmin, Shin, SangJoon
Format: Article
Language:English
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Summary:Finite element (FE) analysis is one of the most accurate methods for predicting electromagnetic field scatter; however, it presents a significant computational overhead. In this study, we propose a data-driven parametric model-order reduction  (pMOR) framework to predict the scattered electromagnetic field of FE analysis. The surface impedance of a coated component is selected as parameter of analysis. A physics-aware (PA) neural network incorporated within a least-squares hierarchical-variational autoencoder (LSH-VAE) is selected for the data-driven pMOR method. The proposed PA-LSH-VAE framework directly accesses the scattered electromagnetic field represented by a large number of degrees of freedom (DOFs). Furthermore, it captures the behavior along with the variation of the complex-valued multi-parameters. A parallel computing approach is used to generate the training data efficiently. The PA-LSH-VAE framework is designed to handle over 2 million DOFs, providing satisfactory accuracy and exhibiting a second-order speed-up factor.
ISSN:0177-0667
1435-5663
DOI:10.1007/s00366-024-02056-1