Multi-scale wave propagation modelling for two-dimensional periodic textile composites

Thierry, V., Brown, L. and Chronopoulos, D. (2018) Multi-scale wave propagation modelling for two-dimensional periodic textile composites. Composites Part B: Engineering, 150 . pp. 144-156. ISSN 1359-8368

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In this article, a method allowing vibro-acoustic and ultrasonic wave propagation analysis of highly anisotropic textile composites at a mesoscopic level is presented for the first time. The method combines the advantages of mode-based Component Mode Synthesis (CMS) that allows reduction of the size of the Dynamic Stiffness Matrix (DSM) of a textile unit cell, and of a Wave Finite Element Method (WFEM), which associates the Periodic Structure Theory (PST) with standard Finite Element Method (FEM). The scheme presented allows the study of the wave propagation properties of a periodic structure by modelling only a unit cell. A multi-scale approach is used to enable the comparison of standard vibrational analysis of textile composite structures, using homogenized properties, with a more complex analysis, where the mesoscale properties of the structure are preserved. It is shown for two different types of weaves that using a standard homogenised model results in significant errors in the dispersion curves. Also band-gap behaviour within specific frequency ranges are successfully predicted using the mesoscale models, whereas it was not observed in the macroscale ones.

Item Type: Article
Keywords: Textile composite structures, Wave propagation, Periodic Structure Theory, Component Mode Synthesis, Unit cell modelling, Multiscale homogenization
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
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Depositing User: Eprints, Support
Date Deposited: 01 Jun 2018 14:47
Last Modified: 04 May 2020 19:49

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