Multiaxial Deformations of Elastomeric Skins for Morphing Wing Applications: Theoretical Modeling and Experimental Investigations

Dilshad Ahmad, Deepak Kumar, Rafic M. Ajaj

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

An elastomeric class of flexible skin-based polymorphing wings changes its configuration to maximize performance at radically different flight conditions. One of the key design challenges for such an aircraft technology is the multiaxial deformation characterization and modeling of nonlinear elastomeric skins of polymorphing wings. In the current study, three elastomeric materials, Latex, Oppo, and Ecoflex, are experimentally characterized and modeled under all possible deformation modes such as uniaxial, pure shear, biaxial, and equibiaxial relevant for flexible skin-based morphing wing applications. Additionally, a novel material model with four material constants is proposed to model the considered elastomers-based morphing wings keeping all the material parameters constant for all the possible deformation modes. The present experimental and theoretical study provides a concise comparative study of the three elastomers used in the morphing wings tested in all possible deformation modes.

Original languageBritish English
Article number4891
JournalPolymers
Volume14
Issue number22
DOIs
StatePublished - Nov 2022

Keywords

  • elastomers
  • flexible skin
  • hyperelasticity
  • morphing wing
  • multiaxial modeling

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