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Nonlinear structura...
Nonlinear structural identification by the "Reverse Path" spectral method
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- Magnevall, Martin (author)
- Blekinge Tekniska Högskola,Avdelningen för matematik och naturvetenskap
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- Josefsson, Andreas (author)
- Blekinge Tekniska Högskola,Avdelningen för maskinteknik
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- Ahlin, Kjell (author)
- Blekinge Tekniska Högskola,Avdelningen för maskinteknik
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- Broman, Göran (author)
- Blekinge Tekniska Högskola,Luleå tekniska universitet,Innovation och Design,Avdelningen för maskinteknik
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
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In: Journal of Sound and Vibration. - : Elsevier BV. - 0022-460X .- 1095-8568. ; 131:4, s. 938-946
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Produktinnovation
- Product Innovation
- Dynamical systems Estimation
Publication and Content Type
- ref (subject category)
- art (subject category)
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