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Nonlinear structural identification by the "Reverse Path" spectral method
AB Sandvik Coromant, Sandviken.
Blekinge Institute of Technology.
Blekinge Institute of Technology.
Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
2012 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 131, no 4, p. 938-946Article in journal (Refereed) Published
Abstract [en]

When dealing with nonlinear dynamical systems, it is important to have efficient, accurate and reliable tools for estimating both the linear and nonlinear system parameters from measured data. An approach for nonlinear system identification widely studied in recent years is "Reverse Path". This method is based on broad-band excitation and treats the nonlinear terms as feedback forces acting on an underlying linear system. Parameter estimation is performed in the frequency domain using conventional multiple-input-multiple-output or multiple-input-single-output techniques. This paper presents a generalized approach to apply the method of "Reverse Path" on continuous mechanical systems with multiple nonlinearities. The method requires few spectral calculations and is therefore suitable for use in iterative processes to locate and estimate structural nonlinearities. The proposed method is demonstrated in both simulations and experiments on continuous nonlinear mechanical structures. The results show that the method is effective on both simulated as well as experimental data.

Place, publisher, year, edition, pages
2012. Vol. 131, no 4, p. 938-946
National Category
Other Engineering and Technologies not elsewhere specified
Research subject
Product Innovation
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URN: urn:nbn:se:ltu:diva-6516DOI: 10.1016/j.jsv.2011.10.029ISI: 000302038500014Scopus ID: 2-s2.0-80955151584Local ID: 4be47d19-c5c9-4e63-b5d8-ad398e5f5ffcOAI: oai:DiVA.org:ltu-6516DiVA, id: diva2:979401
Note
Validerad; 2012; 20111114 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Broman, Göran

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CiteExportLink to record
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  • apa
  • harvard1
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  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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