AN Identification Method of Damping Matrix for Frame Structures

Sha Sha Dong; Wei Ying Wang; Fu Shun Liu; Zhi Qiang Gao

doi:10.4028/www.scientific.net/AMR.243-249.967

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 243-249AN Identification Method of Damping Matrix for...

AN Identification Method of Damping Matrix for Frame Structures

Abstract:

Nowadays, damping is still the important dynamic characteristic that is the least understood and the most difficult to quantify. The advantage of the proposed damping matrix identification method is that several low order complex modes achieved by Experimental Modal Analysis (EMA) are capable of calculation precision. In order to identify the damping matrix, this paper also proposes a general damping matrix decompositon technique, which can be used in the situation that different parts of the structure have different damping. Then a five-story frame structure is applied to demonstrate the proposed method ,and the results obtained show the suitability of this approach for damping matrix identification in frame structures.

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Periodical:

Advanced Materials Research (Volumes 243-249)

Pages:

967-970

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.243-249.967

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Online since:

May 2011

Authors:

Sha Sha Dong, Wei Ying Wang, Fu Shun Liu, Zhi Qiang Gao

Keywords:

Complex Mode, Damping Matrix, Damping Ratio, Low Order

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