Closed-form solutions for thermomechanical buckling of orthotropic composite plates

Javier Gutiérrez Álvarez*, Chiara Bisagni

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)


A closed-form solution is derived for the buckling of orthotropic composite plates under the effect of thermal and mechanical loads. The plates are subjected to constant temperature increment and length variation while the width expansion is constrained. The problem is formulated in terms of displacement components, studied using classical plate theory in combination with classical lamination theory. An analytical formula that relates critical temperatures to applied plate displacements is obtained. The buckling of heated, fully restrained plates is also derived as a particular case. Examples of plates made of different materials and lay-ups are presented in graphical form, and are verified by finite element analysis. The obtained formula can be used during initial design, for sensitivity analysis and also for obtaining desired buckling shapes.

Original languageEnglish
Article number111622
Number of pages7
JournalComposite Structures
Publication statusPublished - 1 Feb 2020


  • Closed formula
  • Preliminar design
  • Thermal stresses
  • Thermomechanical buckling


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