Nonlinear modal analysis of the SmallSat spacecraft

L. Renson*, J. P. Noel, G. Kerschen, A. Newerla

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)


Non-linear elements are present in practically all spacecraft structures. When such non-linear effects are important linear modal analysis can no longer be applied. The development of a non-linear analogue of linear modal analysis is therefore an important endeavor. The objective of this paper is to show that nonlinear normal modes (NNMs) represent a useful and practical tool in this context. A full-scale spacecraft structure is considered and is modeled using the finite element method. Its NNMs are computed using advanced numerical algorithms, and the resulting dynamics is then carefully analyzed. Nonlinear phenomena with no linear counterpart including nonlinear modal interactions are also highlighted.

Original languageEnglish
Title of host publicationEuropean Space Agency, (Special Publication) ESA SP
Volume691 SP
Publication statusPublished - 2012
Event12th European Conference on Spacecraft Structures, Materials and Environmental Testing - Noordwijk, Netherlands
Duration: 20 Mar 201223 Mar 2012


Conference12th European Conference on Spacecraft Structures, Materials and Environmental Testing


  • Localization
  • Modal interaction
  • Nonlinear modal analysis
  • Nonlinear normal modes
  • Spacecraft

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