Nonlinear Dynamics

, Volume 79, Issue 2, pp 1293–1309 | Cite as

Complex dynamics of a nonlinear aerospace structure: numerical continuation and normal modes

Original Paper

Abstract

This paper investigates the dynamics of a real-life aerospace structure possessing a strongly nonlinear component with multiple mechanical stops. A full-scale finite element model is built for gaining additional insight into the nonlinear dynamics that was observed experimentally, but also for uncovering additional nonlinear phenomena, such as quasiperiodic regimes of motion. Forced/unforced, damped/undamped numerical simulations are carried out using advanced techniques and theoretical concepts such as numerical continuation and nonlinear normal modes.

Keywords

Aerospace structure Piecewise-linear nonlinearities  Numerical continuation Nonlinear normal modes Modal interactions 

Notes

Acknowledgments

This paper was prepared in the framework of the European Space Agency (ESA) Technology Research Programme study “Advancement of Mechanical Verification Methods for Nonlinear Spacecraft Structures (NOLISS)” (ESA contract No. 21359/08/NL/SFe). The authors also thank LMS-SAMTECH for providing access to the SAMCEF finite element software. The authors L. Renson and J. P. Noël are Research Fellows (FRIA fellowship) of the Fonds de la Recherche Scientifique—FNRS, which is gratefully acknowledged.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Space Structures and Systems Laboratory, Aerospace and Mechanical Engineering DepartmentUniversity of LiègeLiègeBelgium

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