Dispersion Curves Calculation for Guided Waves in Rod by Modal Analysis

Abstract:

Dispersion curves present fundamental information on guided waves such as wavelength and dispersivity as well as phase and group velocities at a certain frequency, which is essential for the application of guide wave technology. A numerical method based on modal analysis using ANSYS software was presented to calculate the dispersion curves of guided waves in rod. The mode shapes of different modes of guided waves were obtained and discriminated, and the dispersion curves of rod were extracted. The numerical result and the analytical ones matched very well, which verified the effectiveness of this method. This numerical method can be applied to arbitrary waveguide which can be considered as a periodic structure with constant cross-section.

• Periodical: Applied Mechanics and Materials (Volume 472)
• Pages: 44-47
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.472.44
• Online since: January 2014
• Authors: Long Xiang Zhu, Yue Min Wang, Lv Zong, Feng Rui Sun
• Keywords: Dispersion Curve, Guided Wave, Modal Analysis, Rod

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