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Erschienen in: Meccanica 4/2021

27.01.2021 | Modelling and analysis of mechanical systems dynamics

An interval framework for uncertain frequency response of multi-cracked beams with application to vibration reduction via tuned mass dampers

verfasst von: Roberta Santoro, Giuseppe Failla

Erschienen in: Meccanica | Ausgabe 4/2021

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Abstract

The paper addresses the frequency response of beams in presence of open cracks with interval parameters. On adopting the standard Euler–Bernoulli beam theory, every crack is modelled as a linearly-elastic rotational spring whose stiffness and position are treated as uncertain-but-bounded parameters. A two-step method is proposed to calculate the bounds of all response variables. First, the sensitivity functions of the response are calculated as every uncertain parameter varies within the respective interval. Next, the bounds of the response are computed by either a sensitivity-based method or a global optimization technique, the former if the response is monotonic with respect to all uncertain parameters and the latter if the response is non-monotonic with respect to even one parameter only. The method relies on analytical forms for all response variables and the associated sensitivity functions. The applications focus on the frequency response of multi-cracked beams equipped with tuned mass dampers, showing potential and accuracy of the method.

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Metadaten
Titel
An interval framework for uncertain frequency response of multi-cracked beams with application to vibration reduction via tuned mass dampers
verfasst von
Roberta Santoro
Giuseppe Failla
Publikationsdatum
27.01.2021
Verlag
Springer Netherlands
Erschienen in
Meccanica / Ausgabe 4/2021
Print ISSN: 0025-6455
Elektronische ISSN: 1572-9648
DOI
https://doi.org/10.1007/s11012-020-01290-3

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