Journal
ULTRASONICS
Volume 51, Issue 4, Pages 503-515Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultras.2010.12.003
Keywords
Guided wave propagation; Dispersion curves; Waveguide finite element methods
Funding
- European Commission [COOP-CT-2004-513266]
Ask authors/readers for more resources
This paper presents a fast and reliable method, for obtaining all the range of dispersion curves for wave propagation usually used in practice, by numerical simulation only, via common commercial finite element codes. Essentially, the method is based on a simple and robust approach, consisting in a few series of modal analyses for a representative part of the inspected structure. In this way, for different wave lengths, one can find the mode shapes and corresponding natural frequencies by solving some real, symmetric and well numerically conditioned eigenvalue problems. The method allows the extraction of propagating modes only and, in spite of not producing continuous dispersion curves, it is not susceptible to aliasing effects, as some similar methods are. Additionally, complete graphical representations of guided waves are possible with some minor calculus effort. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available