## Abstract The โconventionalโ finite elementโboundary integral (FEโBI) method suffers from two major drawbacks, one is the huge computer resources required by the dense BI submatrix; the other is the slow convergence rate of the resulting linear system of equations. In this article, both the drawb
Critical frequencies for solving electromagnetic scattering problems by the moment/finite-element method
โ Scribed by S. Caorsi; A. Massa; M. Raffetto
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 531 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
โฆ Synopsis
In the last few years, the hybrid moment-merhod/finite-element-method (MM/FEM) approach has been wide& used to solve electromagnetic scatteringproblems. However, as is well known, this method faik at the resonance frequencies of a cauiv that is obtained by covering the surface of a scatterer with a pegect electric conductor and filling it the aiemal medium, and at the resonance frequencies of a cavity that is obtained by covering the surface of a scatterer with a perfect magnetic conductor, and @ling it with the scatterer itself. Numerical simulations showing how these different resonances affect MM/FEM solutions are presented and discussed.
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## Abstract In this paper, Newmark timeโstepping scheme and edge elements are used to numerically solve the timeโdependent scattering problem in a threeโdimensional polyhedral cavity. Finite element methods based on the variational formulation derived in Van and Wood (__Adv. Comput. Math.__, to app
The first part of the paper presents the implementation and performance of a new absorbing boundary condition (ABC) for truncating finite element meshes. This ABC can be applied conformally to the surface of the structure for scattering and antenna radiation calculations. Consequently, the computati
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