And yet another method for the identification of modal constants in Experimental Modal Analysis

D. Montalvão; D. M. Amafabia; J. M. M. Silva

And yet another method for the identification of modal constants in Experimental Modal Analysis

D. Montalvão, D. M. Amafabia, J. M. M. Silva

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Modal Identification from Frequency Response Functions (FRFs) is a chapter of Experimental Modal Analysis (EMA) that many would consider as something from the past. Yet, in a previous work [2], a new approach to determine the modal damping factors from FRFs was proposed. Contrary to other modal identification methods which are based on the dynamic motion governing equations, the method used the dissipated energy per cycle of vibration as a starting point. The method used a plot of the sine of the phase of the receptance against its amplitude. In this paper, it will be shown that near resonant frequencies, its shape is elliptical, whereby the modal constants can be determined.

Original language	English
Title of host publication	IOMAC 2017 - 7th International Operational Modal Analysis Conference
Publisher	International Operational Modal Analysis Conference (IOMAC)
Pages	234-237
Number of pages	4
Publication status	Published - May 2017
Event	7th International Operational Modal Analysis Conference, IOMAC 2017 - Ingolstadt, Germany Duration: 10 May 2017 → 12 May 2017

Conference

Conference	7th International Operational Modal Analysis Conference, IOMAC 2017
Country/Territory	Germany
City	Ingolstadt
Period	10/05/17 → 12/05/17

Keywords

Experimental Modal Analysis (EMA)
Modal constants
Modal identification

Cite this

@inproceedings{86594e9d9acc4f39bb484e81cdf9d460,

title = "And yet another method for the identification of modal constants in Experimental Modal Analysis",

abstract = "Modal Identification from Frequency Response Functions (FRFs) is a chapter of Experimental Modal Analysis (EMA) that many would consider as something from the past. Yet, in a previous work [2], a new approach to determine the modal damping factors from FRFs was proposed. Contrary to other modal identification methods which are based on the dynamic motion governing equations, the method used the dissipated energy per cycle of vibration as a starting point. The method used a plot of the sine of the phase of the receptance against its amplitude. In this paper, it will be shown that near resonant frequencies, its shape is elliptical, whereby the modal constants can be determined.",

keywords = "Experimental Modal Analysis (EMA), Modal constants, Modal identification",

author = "D. Montalv{\~a}o and Amafabia, {D. M.} and Silva, {J. M. M.}",

year = "2017",

month = may,

language = "English",

pages = "234--237",

booktitle = "IOMAC 2017 - 7th International Operational Modal Analysis Conference",

publisher = "International Operational Modal Analysis Conference (IOMAC)",

note = "7th International Operational Modal Analysis Conference, IOMAC 2017 ; Conference date: 10-05-2017 Through 12-05-2017",

}

Montalvão, D, Amafabia, DM & Silva, JMM 2017, And yet another method for the identification of modal constants in Experimental Modal Analysis. in IOMAC 2017 - 7th International Operational Modal Analysis Conference. International Operational Modal Analysis Conference (IOMAC), pp. 234-237, 7th International Operational Modal Analysis Conference, IOMAC 2017, Ingolstadt, Germany, 10/05/17.

And yet another method for the identification of modal constants in Experimental Modal Analysis. / Montalvão, D.; Amafabia, D. M.; Silva, J. M. M.
IOMAC 2017 - 7th International Operational Modal Analysis Conference. International Operational Modal Analysis Conference (IOMAC), 2017. p. 234-237.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - And yet another method for the identification of modal constants in Experimental Modal Analysis

AU - Montalvão, D.

AU - Amafabia, D. M.

AU - Silva, J. M. M.

PY - 2017/5

Y1 - 2017/5

N2 - Modal Identification from Frequency Response Functions (FRFs) is a chapter of Experimental Modal Analysis (EMA) that many would consider as something from the past. Yet, in a previous work [2], a new approach to determine the modal damping factors from FRFs was proposed. Contrary to other modal identification methods which are based on the dynamic motion governing equations, the method used the dissipated energy per cycle of vibration as a starting point. The method used a plot of the sine of the phase of the receptance against its amplitude. In this paper, it will be shown that near resonant frequencies, its shape is elliptical, whereby the modal constants can be determined.

AB - Modal Identification from Frequency Response Functions (FRFs) is a chapter of Experimental Modal Analysis (EMA) that many would consider as something from the past. Yet, in a previous work [2], a new approach to determine the modal damping factors from FRFs was proposed. Contrary to other modal identification methods which are based on the dynamic motion governing equations, the method used the dissipated energy per cycle of vibration as a starting point. The method used a plot of the sine of the phase of the receptance against its amplitude. In this paper, it will be shown that near resonant frequencies, its shape is elliptical, whereby the modal constants can be determined.

KW - Experimental Modal Analysis (EMA)

KW - Modal constants

KW - Modal identification

UR - http://www.scopus.com/inward/record.url?scp=85026297193&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85026297193

SP - 234

EP - 237

BT - IOMAC 2017 - 7th International Operational Modal Analysis Conference

PB - International Operational Modal Analysis Conference (IOMAC)

T2 - 7th International Operational Modal Analysis Conference, IOMAC 2017

Y2 - 10 May 2017 through 12 May 2017

ER -

And yet another method for the identification of modal constants in Experimental Modal Analysis

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Keywords

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