Logo image
Back
Gradient-Based Shape Optimization for Electromagnetic Problems Using IGFEM
Conference proceeding

Gradient-Based Shape Optimization for Electromagnetic Problems Using IGFEM

Kedi Zhang, Ahmad Raeisi Najafi, Philippe H. Geubelle and Jian-Ming Jin
2016 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, pp 579-580
01 Jun 2016
DOI: https://doi.org/10.1109/APS.2016.7695998

Abstract

Engineering, Electrical & Electronic Science & Technology Engineering Technology Telecommunications
A gradient-based shape optimization scheme combined with an interface-enriched generalized finite-element method (IGFEM) is proposed to efficiently optimize electromagnetic (EM) problems. To avoid mesh distortion or the expensive process of repeatedly creating a conformal mesh for each design configuration, the problem geometry is projected onto a fixed background mesh that is not necessarily conformal to the geometry. The IGFEM, with an enriched solution space in nonconformal elements, is adopted for an accurate EM simulation. An analytical sensitivity analysis is presented to compute the derivatives of the objective and constraint functions. Because of the fixed background mesh, the design velocity field term in the sensitivity analysis is evaluated only at the geometry interfaces, and the efficiency of this method is significantly enhanced. An optimization of the radius of a dielectric cylinder to achieve the desired echo width is presented for verification.

Metrics

7 Record Views
3 citations in Web of Science
4 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Web of Science research areas
Engineering, Electrical & Electronic
Telecommunications
Logo image