Isogeometric spectral approximation for elliptic differential operators
© 2018 Elsevier B.V. We study the spectral approximation of a second-order elliptic differential eigenvalue problem that arises from structural vibration problems using isogeometric analysis. In this paper, we generalize recent work in this direction. We present optimally-blended quadrature rules fo...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Elsevier Ltd
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68869 |
| _version_ | 1848761910547185664 |
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| author | Deng, Quanling Puzyrev, Vladimir Calo, Victor |
| author_facet | Deng, Quanling Puzyrev, Vladimir Calo, Victor |
| author_sort | Deng, Quanling |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier B.V. We study the spectral approximation of a second-order elliptic differential eigenvalue problem that arises from structural vibration problems using isogeometric analysis. In this paper, we generalize recent work in this direction. We present optimally-blended quadrature rules for the isogeometric spectral approximation of a diffusion-reaction operator with both Dirichlet and Neumann boundary conditions. The blended rules improve the accuracy of the isogeometric approximation. In particular, the optimal blending rules minimize the dispersion error and lead to two extra orders of super-convergence in the eigenvalue error. Various numerical examples (including the Schrödinger operator for quantum mechanics) in one and three spatial dimensions demonstrate the performance of the blended rules. |
| first_indexed | 2025-11-14T10:39:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-68869 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:11Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-688692018-06-29T12:36:11Z Isogeometric spectral approximation for elliptic differential operators Deng, Quanling Puzyrev, Vladimir Calo, Victor © 2018 Elsevier B.V. We study the spectral approximation of a second-order elliptic differential eigenvalue problem that arises from structural vibration problems using isogeometric analysis. In this paper, we generalize recent work in this direction. We present optimally-blended quadrature rules for the isogeometric spectral approximation of a diffusion-reaction operator with both Dirichlet and Neumann boundary conditions. The blended rules improve the accuracy of the isogeometric approximation. In particular, the optimal blending rules minimize the dispersion error and lead to two extra orders of super-convergence in the eigenvalue error. Various numerical examples (including the Schrödinger operator for quantum mechanics) in one and three spatial dimensions demonstrate the performance of the blended rules. 2018 Journal Article http://hdl.handle.net/20.500.11937/68869 10.1016/j.jocs.2018.05.009 Elsevier Ltd restricted |
| spellingShingle | Deng, Quanling Puzyrev, Vladimir Calo, Victor Isogeometric spectral approximation for elliptic differential operators |
| title | Isogeometric spectral approximation for elliptic differential operators |
| title_full | Isogeometric spectral approximation for elliptic differential operators |
| title_fullStr | Isogeometric spectral approximation for elliptic differential operators |
| title_full_unstemmed | Isogeometric spectral approximation for elliptic differential operators |
| title_short | Isogeometric spectral approximation for elliptic differential operators |
| title_sort | isogeometric spectral approximation for elliptic differential operators |
| url | http://hdl.handle.net/20.500.11937/68869 |