Spacetime Discontinuous Galerkin FEM: Spectral Response

22nd International Conference on Spectral Line Shapes

Abedi, R.^1 ; Omidi, O.^1 ; Clarke, P.L.^1

Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Space Institute, 411 B.H Goethert, Tullahoma

TN

37388, United States^1

关键词: Computational tools;    Conventional materials;    Discontinuous Galerkin FEM;    Discontinuous Galerkin finite-element method;    Experimental demonstrations;    Frequency domains;    Spectral response;    Unit cell analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012065/pdf
DOI  :  10.1088/1742-6596/548/1/012065

来源: IOP

【 摘 要 】

Materials in nature demonstrate certain spectral shapes in terms of their material properties. Since successful experimental demonstrations in 2000, metamaterials have provided a means to engineer materials with desired spectral shapes for their material properties. Computational tools are employed in two different aspects for metamaterial modeling: 1. Mircoscale unit cell analysis to derive and possibly optimize material's spectral response; 2. macroscale to analyze their interaction with conventional material. We compare two different approaches of Time-Domain (TD) and Frequency Domain (FD) methods for metamaterial applications. Finally, we discuss advantages of the TD method of Spacetime Discontinuous Galerkin finite element method (FEM) for spectral analysis of metamaterials.