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Extraction of real modes and physical matrices from modal testing

Extraction of real modes and physical matrices from modal testing

Wang, Tong, Zhang, Lingmi and Tee, Kong Fah ORCID: 0000-0003-3202-873X (2011) Extraction of real modes and physical matrices from modal testing. Earthquake Engineering and Engineering Vibration, 10 (2). pp. 219-227. ISSN 1993-503X (online) (doi:10.1007/s11803-011-0060-6)

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Abstract

A technique to extract real modes from the identified complex modes is presented in this paper, which enables the normalized real mode shapes, modal masses, and full or reduced mass and stiffness matrices to be obtained. The theoretical derivation of the method is provided in detail. An 11-DOF vibration system is used to validate the algorithm, and to analyze the effects of the number of modes utilized and measurement DOFs on the extraction results. Finally, the method is used to extract real modes from both experimental modal analysis and operational modal analysis.

Item Type: Article
Uncontrolled Keywords: modal analysis, complex mode, real mode, normalized mode shape, modal mass
Subjects: T Technology > T Technology (General)
T Technology > TA Engineering (General). Civil engineering (General)
Pre-2014 Departments: School of Engineering
School of Engineering > Department of Civil Engineering
Related URLs:
Last Modified: 14 Oct 2016 09:18
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/7491

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