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Smart Structures and Materials pp 97–113Cite as

Efficient Experimental Validation of Stochastic Sensitivity Analyses of Smart Systems

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Part of the book series: Computational Methods in Applied Sciences ((COMPUTMETHODS,volume 43))

Abstract

A method for the efficient experimental validation of stochastic sensitivity analyses is proposed and tested using a smart system for vibration reduction. Stochastic analyses are needed to assess the reliability and robustness of smart systems. A model-based design of experiments combines an experimental design with the results of a previous numerical sensitivity analysis. To test this method, a system of structural dynamics is used. Active suppression of disturbing vibrations of a cantilever beam by means of active piezoelectric elements is considered. The observed target variables are the level of vibration reduction at the beam’s end and the fundamental frequency considering five uncertain system variables. Based on a numerical model of the piezoelectric beam, a variance-based sensitivity analysis is performed to determine each design variable’s impact on the target variables. According to these numerical results, a model-based experimental design is established and the experiments are conducted. In comparison to a fully five-factor factorial experimental design, the model-based approach reduced the experimental effort by 50%, without great loss of information.

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Authors and Affiliations

  1. Research Group System Reliability and Machine Acoustics SzM, TU Darmstadt, Magdalenenstr. 4, 64289, Darmstadt, Germany

    Steffen Ochs, Sushan Li, Christian Adams & Tobias Melz

Authors
  1. Steffen Ochs
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  2. Sushan Li
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  3. Christian Adams
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  4. Tobias Melz
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Corresponding author

Correspondence to Steffen Ochs .

Editor information

Editors and Affiliations

  1. IDMEC, Instituto Superior Tecnico, University of Lisbon, Lisbon, Portugal

    Aurelio L. Araujo

  2. University of Lisbon, Lisbon, Portugal

    Carlos A. Mota Soares

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Ochs, S., Li, S., Adams, C., Melz, T. (2017). Efficient Experimental Validation of Stochastic Sensitivity Analyses of Smart Systems. In: Araujo, A., Mota Soares, C. (eds) Smart Structures and Materials. Computational Methods in Applied Sciences, vol 43. Springer, Cham. https://doi.org/10.1007/978-3-319-44507-6_5

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  • DOI: https://doi.org/10.1007/978-3-319-44507-6_5

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-44505-2

  • Online ISBN: 978-3-319-44507-6

  • eBook Packages: EngineeringEngineering (R0)

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