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

Chronopoulos, Dimitrios (2017) Wave steering effects in anisotropic composite structures: direct calculation of the energy skew angle through a finite element scheme. Ultrasonics, 73 . pp. 43-48. ISSN 0041-624X

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Available under Licence Creative Commons Attribution Non-commercial No Derivatives.
Download (196kB) | Preview

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.

Item Type: Article
Keywords: Wave Steering; Composite Structures; Energy skewing; Caustics; Wave Finite Elements
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1016/j.ultras.2016.08.020
Depositing User: Eprints, Support
Date Deposited: 30 Aug 2016 09:56
Last Modified: 18 Oct 2017 18:00
URI: http://eprints.nottingham.ac.uk/id/eprint/36085

Actions (Archive Staff Only)

Edit View Edit View