Preliminary modal analysis of inflatable wings

Johnathan Rowe, Suzanne Weaver Smith, Andrew Simpson, Jamey Jacob

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


Comparisons between experimentally determined natural frequencies and mode shapes of an inflatable wing and finite element predictions of those natural frequencies and mode shapes are presented in this paper. Traditional modal test methods were used to determine the vibrational characteristics of the wing. Both linear and non-linear finite element methods have been used to predict natural frequencies and mode shapes, with comparisons between these methods presented herein. A wing constructed of an external restraint made of Vectran fabric encasing a polyurethane bladder is considered for internal pressures ranging from 5 to 25 psig. Though the finite element predictions presented herein conclude the current model is generally too stiff in predicting natural frequencies, the results are promising for an initial analysis of this unique structural system.

Original languageEnglish
Title of host publicationIMAC-XXV - Celebrating 25 Years of IMAC
StatePublished - 2007
Event25th Conference and Exposition on Structural Dynamics 2007, IMAC-XXV - Orlando, FL, United States
Duration: Feb 19 2007Feb 22 2007

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652


Conference25th Conference and Exposition on Structural Dynamics 2007, IMAC-XXV
Country/TerritoryUnited States
CityOrlando, FL

ASJC Scopus subject areas

  • General Engineering
  • Computational Mechanics
  • Mechanical Engineering


Dive into the research topics of 'Preliminary modal analysis of inflatable wings'. Together they form a unique fingerprint.

Cite this