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Interface Reduction on Hurty/Craig-Bampton Substructures with Frictionless Contact Read chapter Read first chapter

2019 | OriginalPaper | Chapter

13. Operational Modal Analysis Based Stress Estimation in Friction Systems

Authors : Marius Tarpø, Tobias Friis, Bruna Nabuco, Sandro Amador, Evangelos Katsanos, Rune Brincker

Published in: Nonlinear Dynamics, Volume 1

Publisher: Springer International Publishing

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Abstract

It is possible to estimate the strain response of a structure in unmeasured points by the use of operational modal analysis and modal expansion. Both techniques are based on the assumption that the system is linear. However, this is not always the case since nonlinear elements often violate this assumption. In this paper, the precision of estimating the strain response of a nonlinear system is investigated using the operational response of numerical simulations. Local nonlinearities are introduced by adding friction to the test specimen and this paper finds that this approach of strain estimation can still predict the strains with high precision.

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previous chapter Time-varying Spectral Submanifolds: Analytic Calculation of Backbone Curves and Forced Response
next chapter Damping Estimation of Friction Systems in Random Vibrations
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Metadata
Title
Operational Modal Analysis Based Stress Estimation in Friction Systems
Authors
Marius Tarpø
Tobias Friis
Bruna Nabuco
Sandro Amador
Evangelos Katsanos
Rune Brincker
Copyright Year
2019
Book
Nonlinear Dynamics, Volume 1

Print ISBN: 978-3-319-74279-3

Electronic ISBN: 978-3-319-74280-9

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-319-74280-9_13

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