Multi-scale computational homogenisation to predict the long-term durability of composite structures

Ullah, Z., Kaczmarczyk, Ł. , Grammatikos, S.A., Evernden, M.C. and Pearce, C.J. (2017) Multi-scale computational homogenisation to predict the long-term durability of composite structures. Computers and Structures, 181, pp. 21-31. (doi:10.1016/j.compstruc.2016.11.002)

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Abstract

A coupled hygro-thermo-mechanical computational model is proposed for fibre reinforced polymers, formulated within the framework of Computational Homogenisation (CH). At each macrostructure Gauss point, constitutive matrices for thermal, moisture transport and mechanical responses are calculated from CH of the underlying representative volume element (RVE). A degradation model, developed from experimental data relating evolution of mechanical properties over time for a given exposure temperature and moisture concentration is also developed and incorporated in the proposed computational model. A unified approach is used to impose the RVE boundary conditions, which allows convenient switching between linear Dirichlet, uniform Neumann and periodic boundary conditions. A plain weave textile composite RVE consisting of yarns embedded in a matrix is considered in this case. Matrix and yarns are considered as isotropic and transversely isotropic materials respectively. Furthermore, the computational framework utilises hierarchic basis functions and designed to take advantage of distributed memory high performance computing.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kaczmarczyk, Dr Lukasz and Ullah, Dr Zahur and Pearce, Professor Christopher
Authors: Ullah, Z., Kaczmarczyk, Ł., Grammatikos, S.A., Evernden, M.C., and Pearce, C.J.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Computers and Structures
Publisher:Elsevier
ISSN:0045-7949
ISSN (Online):1879-2243
Published Online:14 November 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in Computers and Structures 181:21-31
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
618241Providing Confidence in Durable Composites (DURACOMP)Christopher PearceEngineering & Physical Sciences Research Council (EPSRC)EP/K026925/1ENG - ENGINEERING INFRASTRUCTURE & ENVIR