Comments on the MAC and the NCO, and a linear modal correlation coefficient

C. A. Morales

doi:10.1016/j.jsv.2004.04.011

Comments on the MAC and the NCO, and a linear modal correlation coefficient

C. A. Morales

Virginia Polytech. Inst./State Univ.

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

A critical review and new insights on the modal assurance criterion (MAC) and the normalized cross orthogonality (NCO) are presented. A linear modal correlation coefficient, LNCO, is also proposed that solves the defects of previous coefficients. The disadvantage of the MAC is that it only serves as a correlation or collinearity test between eigenvectors. The NCO is a modification of the MAC customized to solve its first noted shortcoming. The LNCO is an orthogonality check does have a meaningful domain for its [0,1] rank and is linear.

Original language	English
Pages (from-to)	529-537
Number of pages	9
Journal	Journal of Sound and Vibration
Volume	282
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jsv.2004.04.011
State	Published - 6 Apr 2005
Externally published	Yes

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10.1016/j.jsv.2004.04.011

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abstract = "A critical review and new insights on the modal assurance criterion (MAC) and the normalized cross orthogonality (NCO) are presented. A linear modal correlation coefficient, LNCO, is also proposed that solves the defects of previous coefficients. The disadvantage of the MAC is that it only serves as a correlation or collinearity test between eigenvectors. The NCO is a modification of the MAC customized to solve its first noted shortcoming. The LNCO is an orthogonality check does have a meaningful domain for its [0,1] rank and is linear.",

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AB - A critical review and new insights on the modal assurance criterion (MAC) and the normalized cross orthogonality (NCO) are presented. A linear modal correlation coefficient, LNCO, is also proposed that solves the defects of previous coefficients. The disadvantage of the MAC is that it only serves as a correlation or collinearity test between eigenvectors. The NCO is a modification of the MAC customized to solve its first noted shortcoming. The LNCO is an orthogonality check does have a meaningful domain for its [0,1] rank and is linear.

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ER -

Comments on the MAC and the NCO, and a linear modal correlation coefficient

Abstract

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