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

IF 4.1 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Engineering Analysis with Boundary Elements Pub Date : 2025-03-01 Epub Date: 2025-01-24 DOI:10.1016/j.enganabound.2025.106126
Leilei Chen , Chengmiao Liu , Haojie Lian , Wenxiang Gu
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Abstract

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.
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等几何边界元法分析TM极化条件下完美导电物体的电磁散射灵敏度
本文提出了一个横向磁极化电磁散射问题的灵敏度分析框架,重点研究了完美电导体(PEC)。为了实现计算机辅助设计与计算机辅助工程的无缝集成,采用了基于伽辽金格式的等几何边界元方法。该方法利用非均匀有理b样条来表示几何形状和未知的物理场。推导了一种直接微分公式来评估雷达截面(RCS)在形状设计变量和入射波角方面的灵敏度。通过算例验证了该算法的准确性和有效性。
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来源期刊
Engineering Analysis with Boundary Elements
Engineering Analysis with Boundary Elements 工程技术-工程:综合
CiteScore
5.50
自引率
18.20%
发文量
368
审稿时长
56 days
期刊介绍: This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.
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