Model order reduction using hyperreduction methods (DEIM, ECSW) for magnetodynamic FEM problems

Johannes Maierhofer; Daniel J. Rixen

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Model order reduction using hyperreduction methods (DEIM, ECSW) for magnetodynamic FEM problems

机译：Model order reduction using hyperreduction methods (DEIM, ECSW) for magnetodynamic FEM problems

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摘要

Efficient Model Order Reduction Methods for the calculation of non-linear electromagnetic systems can be realized using hyperreduction strategies that are known from structural dynamics. Precalculated full field solution snapshots are used to build a reduction basis using a singular value decomposition. The non-linear behavior is further reduced by a weighting function on selected elements. This paper presents the application of the discrete empirical interpolation method (DEIM) and the energy-conserving sampling and weighting (ECSW) method to magnetodynamic FEM problems. The magnetodynamic FEM formulation is based on the modified vector-potential in combination with edge-elements. Applying the hyperreduction methods, a significant reduction of online computational time was achieved while preserving very good accuracy of the simulation.

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来源
《Finite elements in analysis & design》 |2022年第10期|103793.1-103793.15|共15页
作者
Johannes Maierhofer; Daniel J. Rixen;
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作者单位

Applied Mechanics, Technical University of Munich, Boltzmanstrasse 15, 85748, Garching, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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关键词
Model-Order-Reduction (MOR); Finite-Element-Method (FEM); Eddy-current problems; Magnetodynamic; Non-linear models; Energy Conserving Sampling and Weighting(ECSW); Discrete Empirical Interpolation Method(DEIM);

Model order reduction using hyperreduction methods (DEIM, ECSW) for magnetodynamic FEM problems

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