Analysis of thermally induced multistable composites

F Mattioni, PM Weaver, KD Potter, MI Friswell

Research output: Contribution to journalArticle (Academic Journal)peer-review

96 Citations (Scopus)

Abstract

This paper models the non-linear flexural response of laminates that have piecewise variation of lay-up in the planform, using finite element analysis. Attention is focused on the effects that thermal stresses have on the potential multiple shapes of a composite structure. Unsymmetric laminates may possess more than a single equilibrium configuration, and during the cool-down the solution thus bifurcates at a critical temperature. In static analyses, numerical solutions are often coaxed to converge into one or the other branch of the solution. A methodology to overcome this problem is presented. Such modelling is necessary to allow application of multistable composite within morphing aircraft structures as multistable composites could provide a viable solution for the realisation of shape-adaptable structures.
Translated title of the contributionAnalysis of thermally induced multistable composites
Original languageEnglish
Pages (from-to)657 - 675
Number of pages19
JournalInternational Journal of Solids and Structures
Volume45
Issue number2
DOIs
Publication statusPublished - Jan 2008

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