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Wave steering effects in anisotropic composite structures: direct calculation of the energy skew angle through a finite element scheme

Chronopoulos, Dimitrios

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Abstract

A systematic expression quantifying the wave energy skewing phenomenon as a function of the mechanical characteristics of a non-isotropic structure is derived in this study. A structure of arbitrary anisotropy, layering and geometric complexity is modelled through Finite Elements (FEs) coupled to a periodic structure wave scheme. A generic approach for efficiently computing the angular sensitivity of the wave slowness for each wave type, direction and frequency is presented. The approach does not involve any finite differentiation scheme and is therefore computationally efficient and not prone to the associated numerical errors.

Citation

Chronopoulos, D. (2017). Wave steering effects in anisotropic composite structures: direct calculation of the energy skew angle through a finite element scheme. Ultrasonics, 73, https://doi.org/10.1016/j.ultras.2016.08.020

Journal Article Type Article
Acceptance Date Aug 26, 2016
Online Publication Date Aug 27, 2016
Publication Date Jan 1, 2017
Deposit Date Aug 30, 2016
Publicly Available Date Aug 30, 2016
Journal Ultrasonics
Print ISSN 0041-624X
Electronic ISSN 0041-624X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 73
DOI https://doi.org/10.1016/j.ultras.2016.08.020
Keywords Wave Steering; Composite Structures; Energy skewing; Caustics; Wave Finite Elements
Public URL http://eprints.nottingham.ac.uk/id/eprint/36085
Publisher URL http://www.sciencedirect.com/science/article/pii/S0041624X16301536?np=y
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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