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A Duhamel approach for forced vibrations of rotating axisymmetric bodies
Author(s) -
Carmignani C.,
Forte P.,
Melani G.
Publication year - 2012
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.3365
Subject(s) - rotational symmetry , impulse (physics) , vibration , finite element method , transient (computer programming) , transient response , impulse response , mechanics , control theory (sociology) , physics , classical mechanics , mathematical analysis , engineering , mathematics , acoustics , structural engineering , computer science , electrical engineering , control (management) , artificial intelligence , operating system
SUMMARY In this work a novel approach for the determination of the dynamic behaviour of a rotating device subject to forces fixed with respect to a stationary reference system is developed. The procedure can be applied to any axisymmetric rotating structure and it is particularly convenient for components of complex geometry for which an accurate dynamic characterization is fundamental. It is based on the application of Duhamel's integral. The time evolution of the system is obtained with the determination of the impulse response of the body using one single finite element transient analysis. By combining the results of the transient analysis with the time history of the forces applied to the rotating body, it is possible to determine the ground‐based vibration response of the component. Copyright © 2012 John Wiley & Sons, Ltd.