Postbuckling of non-linear viscoelastic imperfect laminated plates part I: Material considerations

David Touati, Gabriel Cederbaum

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A method of predicting the non-linear relaxation behavior from creep experiments done on non-linear viscoelastic orthotropic materials is presented. Such a method is desirable since creep experiments are those mainly performed for these materials. It is shown that for given non-linear creep properties, and creep compliance represented by the Prony series, the Schapery creep model for non-linear viscoelastic orthotropic material can be transformed into a set of first-order non-linear equations. The solution of these equations makes it possible to obtain the non-linear stress relaxation curves, from which the strain-dependent constitutive equation of any non-linear viscoelastic model can be constructed, as needed for engineering applications.

Original languageEnglish
Pages (from-to)33-41
Number of pages9
JournalComposite Structures
Volume42
Issue number1
DOIs
StatePublished - 1 Jan 1998

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