Efficient Numerical Modelling of Absorbing Regions for Boundaries Of Guided Waves Problems

Efficient Numerical Modelling of Absorbing Regions for Boundaries Of Guided Waves Problems
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导波问题边界吸收区域的高效数值模拟

DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
P. Cawley
P. Cawley
中科院分区：
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文献类型：
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作者：
M. Drozdz;L. Moreau;M. Castaings;M. Lowe;P. Cawley

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本文提出了一种利用频域分析和吸收区域的有限元模拟导波传播的方法。这些区域被放置在模型的末端，可以吸收导波，从而避免从边界反射。讨论了有效定义这些区域的指导方针。为了验证这一过程，给出了典型的案例研究。这种方法将有利于复杂三维结构中导波与复杂三维缺陷相互作用等大问题的模拟。
This paper presents a method of modelling guided waves propagation with Finite Elements using frequency domain analysis and absorbing regions. These regions are placed at the extremities of the models and can absorb guided waves, thus avoiding reflections from the boundaries. Guidelines for efficient definition of these regions are discussed. Typical case studies are presented in order to validate the process. This method will benefit the modelling of large problems such as the interaction of guided waves with complex 3D defects in complex 3D structures.