Stability of lobed balloons

M Pagitz, Yixiang Xu, S. Pellegrino

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents a computational study of the stability of simple lobed balloon structures. Two approaches are presented, one based on a wrinkled material model and one based on a variable Poissons ratio model that eliminates compressive stresses iteratively. The first approach is used to investigate the stability of both a single isotensoid and a stack of four isotensoids, for perturbations of infinitesimally small amplitude. It is found that both structures are stable for global deformation modes, but unstable for local modes at sufficiently large pressure. Both structures are stable at any pressure if an isotropic model is assumed. The second approach is used to investigate the stability of the isotensoid stack for large shape perturbations, taking into account contact
between different surfaces. For this structure a distorted, stable configuration is found. It is also found that the volume enclosed
by this configuration is smaller than that enclosed by the undistorted structure.
Original languageEnglish
Pages (from-to)2059-2069
Number of pages11
JournalAdvances in Space Research
Volume37
Issue number11
DOIs
Publication statusPublished - 2006

Keywords

  • balloon
  • wrinkle
  • stability
  • membrane
  • isotensoid

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    Pagitz, M., Xu, Y., & Pellegrino, S. (2006). Stability of lobed balloons. Advances in Space Research, 37(11), 2059-2069. https://doi.org/10.1016/j.asr.2005.06.023