A study on thermal buckling and mode jumping of metallic and composite plates

Javier Gutiérrez Álvarez, Chiara Bisagni*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
32 Downloads (Pure)


Composite plates in post-buckling regime can experience mode jumping in their buckling shape, suddenly increasing the number of half-waves. This phenomenon can be advantageous, be-cause the shape change could be used for local morphing or structural adaptability in future aerospace structures. A study of this phenomenon under heating is here presented, combining numerical and experimental techniques. At first, a set of parametric analysis was conducted to identify composite panels that present a mode jump when heated. Three plates were selected, one in alumi-num alloy 2024T3, and two in AS4/8552 composite material, with layup [30/−30/5/−5]s and [35/−35/10/−10]s. The plates were tested in a new test setup for thermal buckling based on low thermal expansion fixtures. The mode jumping was successfully obtained experimentally for both composite plates. Numerical simulations predicted the general trends for all plates, and the mode jumps for the composite plates.

Original languageEnglish
Article number56
Pages (from-to)1-17
Number of pages17
Issue number2
Publication statusPublished - 2021


  • Aeronautical morphing application
  • Experimental buckling
  • Instability
  • Post-buckling
  • Shape change
  • Thermal testing


Dive into the research topics of 'A study on thermal buckling and mode jumping of metallic and composite plates'. Together they form a unique fingerprint.

Cite this