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On the use of transmissibility measurements for finite element model updating

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Title: On the use of transmissibility measurements for finite element model updating
Authors: Steenackers, G. gunther.steenackers@vub.ac.be, Devriendt, C.1, Guillaume, P.1
Source: Journal of Sound & Vibration. Jun2007, Vol. 303 Issue 3-5, p707-722. 16p.
Subjects: Mechanical vibration research, Finite element method data processing, Frequency response, Electronic excitation, Mathematical functions, Degrees of freedom
Abstract: Conventional finite element updating techniques make use of measured frequency response functions and modal parameter estimates to update the FE model parameters. This paper presents a new technique to update the FE model from output-only transmissibility measurements assuming the location of the excitation force is known. A transmissibility function is defined as the ratio between two (measured) responses. In general, the poles that are identified from transmissibility measurements do not correspond with the system''s poles. It can be proven that the peaks of the transmissibility function coincide with the modal frequencies of the system with the excitation degree of freedom constrained. The effectiveness of the proposed procedure will be illustrated by means of a case study. [Copyright &y& Elsevier]
Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 24861867
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: On the use of transmissibility measurements for finite element model updating
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  Data: <searchLink fieldCode="AR" term="%22Steenackers%2C+G%2E%22">Steenackers, G.</searchLink><i> gunther.steenackers@vub.ac.be</i><br /><searchLink fieldCode="AR" term="%22Devriendt%2C+C%2E%22">Devriendt, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Guillaume%2C+P%2E%22">Guillaume, P.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Sound+%26+Vibration%22">Journal of Sound & Vibration</searchLink>. Jun2007, Vol. 303 Issue 3-5, p707-722. 16p.
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  Data: <searchLink fieldCode="DE" term="%22Mechanical+vibration+research%22">Mechanical vibration research</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method+data+processing%22">Finite element method data processing</searchLink><br /><searchLink fieldCode="DE" term="%22Frequency+response%22">Frequency response</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+excitation%22">Electronic excitation</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+functions%22">Mathematical functions</searchLink><br /><searchLink fieldCode="DE" term="%22Degrees+of+freedom%22">Degrees of freedom</searchLink>
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  Data: Conventional finite element updating techniques make use of measured frequency response functions and modal parameter estimates to update the FE model parameters. This paper presents a new technique to update the FE model from output-only transmissibility measurements assuming the location of the excitation force is known. A transmissibility function is defined as the ratio between two (measured) responses. In general, the poles that are identified from transmissibility measurements do not correspond with the system''s poles. It can be proven that the peaks of the transmissibility function coincide with the modal frequencies of the system with the excitation degree of freedom constrained. The effectiveness of the proposed procedure will be illustrated by means of a case study. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Journal of Sound & Vibration is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.jsv.2007.01.030
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      – Code: eng
        Text: English
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        PageCount: 16
        StartPage: 707
    Subjects:
      – SubjectFull: Mechanical vibration research
        Type: general
      – SubjectFull: Finite element method data processing
        Type: general
      – SubjectFull: Frequency response
        Type: general
      – SubjectFull: Electronic excitation
        Type: general
      – SubjectFull: Mathematical functions
        Type: general
      – SubjectFull: Degrees of freedom
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      – TitleFull: On the use of transmissibility measurements for finite element model updating
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              Text: Jun2007
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