Efficient computation of dispersion curves for multilayered waveguides and half-spaces
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- 作者：Ali Vaziri Astaneh ; Murthy N. Guddati ; murthy.guddati@ncsu.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Guided waves ; Surface waves ; Layered media ; Dispersion curve ; Thin layer method ; Perfectly matched layers
- 刊名：Computer Methods in Applied Mechanics and Engineering
- 出版年：2016
- 出版时间：1 March 2016
- 年：2016
- 卷：300
- 期：Complete
- 页码：27-46
- 全文大小：668 K
文摘
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Exponentially convergent semi-discretization is proposed for multilayered waveguides.
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Midpoint integration with linear finite elements is key to exponential convergence.
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Finite layers are discretized using a mesh stretched into complex plane.
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Half-space is modeled using an optimally graded mesh.
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Implementation requires minimal modification to existing FE-based codes.