VIBRATION SOURCE IDENTIFICATION AND MODIFICATION FOR STRUCTURES WITH HIGHLY COHERENT EXCITATION SOURCES VIA MULTIPLE INPUT MODELS AND MODAL ANALYSIS.

David P. Kovalcin, Martin Wesley Trethewey

Research output: Contribution to journalConference article

Abstract

Multiple input/output modeling, modal analysis and eigenvalue modification are applied to identify and predict the effect that design changes have on structural vibrations in a multiple excitation environment. A multiple input/output model is used to estimate the frequency response functions between the excitation sources and vibration test points on an operating piece of equipment. The source identification is performed with MI/O relationships, while the vibration modal model is developed from the response functions. Eigenvalue modification techniques are used to predict the new dynamic characteristic for potential design changes. The vibration levels and path identification for the proposed design change are estimated using MI/O relationships with the predicted response functions. (Edited author abstract. )

Original languageEnglish (US)
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - Jan 1 1985

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Modal analysis
Frequency response

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

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title = "VIBRATION SOURCE IDENTIFICATION AND MODIFICATION FOR STRUCTURES WITH HIGHLY COHERENT EXCITATION SOURCES VIA MULTIPLE INPUT MODELS AND MODAL ANALYSIS.",
abstract = "Multiple input/output modeling, modal analysis and eigenvalue modification are applied to identify and predict the effect that design changes have on structural vibrations in a multiple excitation environment. A multiple input/output model is used to estimate the frequency response functions between the excitation sources and vibration test points on an operating piece of equipment. The source identification is performed with MI/O relationships, while the vibration modal model is developed from the response functions. Eigenvalue modification techniques are used to predict the new dynamic characteristic for potential design changes. The vibration levels and path identification for the proposed design change are estimated using MI/O relationships with the predicted response functions. (Edited author abstract. )",
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year = "1985",
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AU - Kovalcin, David P.

AU - Trethewey, Martin Wesley

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N2 - Multiple input/output modeling, modal analysis and eigenvalue modification are applied to identify and predict the effect that design changes have on structural vibrations in a multiple excitation environment. A multiple input/output model is used to estimate the frequency response functions between the excitation sources and vibration test points on an operating piece of equipment. The source identification is performed with MI/O relationships, while the vibration modal model is developed from the response functions. Eigenvalue modification techniques are used to predict the new dynamic characteristic for potential design changes. The vibration levels and path identification for the proposed design change are estimated using MI/O relationships with the predicted response functions. (Edited author abstract. )

AB - Multiple input/output modeling, modal analysis and eigenvalue modification are applied to identify and predict the effect that design changes have on structural vibrations in a multiple excitation environment. A multiple input/output model is used to estimate the frequency response functions between the excitation sources and vibration test points on an operating piece of equipment. The source identification is performed with MI/O relationships, while the vibration modal model is developed from the response functions. Eigenvalue modification techniques are used to predict the new dynamic characteristic for potential design changes. The vibration levels and path identification for the proposed design change are estimated using MI/O relationships with the predicted response functions. (Edited author abstract. )

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