Frequency-Dependent Nonreflecting Boundary for Absorbing Lamb Waves Based on Lysmer and Kuhlemeyer Absorbing Boundary
Publication: Journal of Engineering Mechanics
Volume 149, Issue 9
Abstract
This paper reports two nonreflecting boundaries based on the Lysmer and Kuhlemeyer (L-K) absorbing boundary, respectively for absorbing symmetric and antisymmetric Lamb wave, which compensate for the weakness of the L-K absorbing boundary in the application for absorbing Lamb waves at the structural boundary. In this paper, the accurate and approximate formulas of the coefficients of the nonreflecting boundary for symmetric and antisymmetric Lamb waves are obtained by theoretical deduction based on the L-K method. The effectiveness and robustness of these nonreflecting boundaries are verified by comparing with the conventional L-K absorbing boundary in simulation cases. In addition, the limitations of these nonreflective boundaries are discussed.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was funded by the National Natural Science Foundation of China, Grant No. 51975581.
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Published In
Journal of Engineering Mechanics
Volume 149 • Issue 9 • September 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Dec 11, 2022
Accepted: Mar 31, 2023
Published online: Jun 19, 2023
Published in print: Sep 1, 2023
Discussion open until: Nov 19, 2023
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