New Separation Techniques for Output-Only Modal Analysis

The paper is devoted to the problem of discriminating between operational and natural modes of structures excited by generic inputs. This case often occurs when the system under analysis holds rotating parts and is contemporary excited by ambient noise; in this case the output-only techniques may fa...

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Main Authors: Jérôme Antoni, Luigi Garibaldi, Stefano Marchesiello, Menad Sidhamed
Format: Article
Language:English
Published: Wiley 2004-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2004/560576
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author Jérôme Antoni
Luigi Garibaldi
Stefano Marchesiello
Menad Sidhamed
author_facet Jérôme Antoni
Luigi Garibaldi
Stefano Marchesiello
Menad Sidhamed
author_sort Jérôme Antoni
collection DOAJ
description The paper is devoted to the problem of discriminating between operational and natural modes of structures excited by generic inputs. This case often occurs when the system under analysis holds rotating parts and is contemporary excited by ambient noise; in this case the output-only techniques may fail being easily trapped in a misinterpretation of the system eigenvalues. A survey of the methods available in literature is given, together with the explanation of their failures. To solve this problem, two new techniques are introduced and their capabilities are checked with numerical and experimental data from a paper machine.
format Article
id doaj-art-6924fc78a1264946bb52702665d9401c
institution Kabale University
issn 1070-9622
1875-9203
language English
publishDate 2004-01-01
publisher Wiley
record_format Article
series Shock and Vibration
spelling doaj-art-6924fc78a1264946bb52702665d9401c2025-02-03T01:02:37ZengWileyShock and Vibration1070-96221875-92032004-01-01113-422724210.1155/2004/560576New Separation Techniques for Output-Only Modal AnalysisJérôme Antoni0Luigi Garibaldi1Stefano Marchesiello2Menad Sidhamed3University of Technology of Compiègne, FrancePolitecnico di Torino, ItalyPolitecnico di Torino, ItalyUniversity of Technology of Compiègne, FranceThe paper is devoted to the problem of discriminating between operational and natural modes of structures excited by generic inputs. This case often occurs when the system under analysis holds rotating parts and is contemporary excited by ambient noise; in this case the output-only techniques may fail being easily trapped in a misinterpretation of the system eigenvalues. A survey of the methods available in literature is given, together with the explanation of their failures. To solve this problem, two new techniques are introduced and their capabilities are checked with numerical and experimental data from a paper machine.http://dx.doi.org/10.1155/2004/560576
spellingShingle Jérôme Antoni
Luigi Garibaldi
Stefano Marchesiello
Menad Sidhamed
New Separation Techniques for Output-Only Modal Analysis
Shock and Vibration
title New Separation Techniques for Output-Only Modal Analysis
title_full New Separation Techniques for Output-Only Modal Analysis
title_fullStr New Separation Techniques for Output-Only Modal Analysis
title_full_unstemmed New Separation Techniques for Output-Only Modal Analysis
title_short New Separation Techniques for Output-Only Modal Analysis
title_sort new separation techniques for output only modal analysis
url http://dx.doi.org/10.1155/2004/560576
work_keys_str_mv AT jeromeantoni newseparationtechniquesforoutputonlymodalanalysis
AT luigigaribaldi newseparationtechniquesforoutputonlymodalanalysis
AT stefanomarchesiello newseparationtechniquesforoutputonlymodalanalysis
AT menadsidhamed newseparationtechniquesforoutputonlymodalanalysis