Electromagnetic scattering sensitivity analysis for perfectly conducting objects in TM polarization with isogeometric BEM

This study proposes a sensitivity analysis framework for Transverse Magnetic polarized electromagnetic scattering problems, with a focus on Perfectly Electric Conductors (PEC). To enable seamless integration of Computer-Aided Design and Computer-Aided Engineering, the isogeometric boundary element m...

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Bibliographic Details
Published inEngineering analysis with boundary elements Vol. 172; p. 106126
Main Authors Chen, Leilei, Liu, Chengmiao, Lian, Haojie, Gu, Wenxiang
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2025
Subjects
Electromagnetic scattering
Isogeometric boundary element method
NURBS
Shape sensitivity analysis
TM polarization
Isogeometric boundary element method
TM polarization
Electromagnetic scattering
Shape sensitivity analysis
NURBS
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Summary:This study proposes a sensitivity analysis framework for Transverse Magnetic polarized electromagnetic scattering problems, with a focus on Perfectly Electric Conductors (PEC). To enable seamless integration of Computer-Aided Design and Computer-Aided Engineering, the isogeometric boundary element method based on the Galerkin scheme is employed. This method utilizes Non-Uniform Rational B-splines to represent geometries and unknown physical fields. A direct differentiation formulation is derived to evaluate the sensitivity of the Radar Cross Section (RCS) with respect to shape design variables and incident wave angles. The accuracy and effectiveness of the algorithm are validated through numerical examples. •IGABEM is used for sensitivity analysis in TM polarized electromagnetic scattering.•Influence of shape design variables is investigated.•Influence of incident wave propagation angles is analysed.
ISSN:0955-7997
DOI:10.1016/j.enganabound.2025.106126