A performance study of NURBS-based isogeometric analysis for interior two-dimensional time-harmonic acoustics
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- 作者：Laurens Coox ; Laurens.Coox@mech.kuleuven.be" class="auth_mail" title="E-mail the corresponding author ; Elke Deckers ; Dirk Vandepitte ; Wim Desmet
- 关键词：Time-harmonic acoustics ; Helmholtz problem ; Isogeometric analysis ; Finite elements ; NURBS
- 刊名：Computer Methods in Applied Mechanics and Engineering
- 出版年：2016
- 出版时间：15 June 2016
- 年：2016
- 卷：305
- 期：Complete
- 页码：441-467
- 全文大小：2830 K
文摘
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The performance of NURBS-based IGA for time-harmonic acoustics in 2D is studied.
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NURBS functions exhibit better spectral approximation properties than polynomials.
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IGA converges faster than conventional FEM on a per-DOF-basis.
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IGA suffers less from the pollution effect than conventional FEM.
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IGA also performs well for complex geometries and impedance boundary conditions.