✦ LIBER ✦

ON THE ZEROS OF STRUCTURAL FREQUENCY RESPONSE FUNCTIONS AND THEIR SENSITIVITIES

✍ Scribed by J.E. Mottershead

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 148 KB
Volume: 12
Category: Article
ISSN: 0888-3270
DOI: 10.1006/mssp.1998.0167

No coin nor oath required. For personal study only.

✦ Synopsis

This paper is concerned with the information introduced by measured zeros from frequency response functions and its application to model assessment and updating. It is demonstrated that the sensitivities of the zeros can be expressed as a linear combination of the sensitivities of the eigenvalues (natural frequencies) and mode shapes. The sensitivities of the closest eigenvalues and mode shapes are shown to contribute most to the sensitivities of the zeros in a numerical exercise.

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