AN Identification Method of Damping Matrix for Frame Structures

Autor: Zhi Qiang Gao, Wei Ying Wang, Sha Sha Dong, Fu Shun Liu
Rok vydání: 2011
Předmět:
Zdroj: Advanced Materials Research. :967-970
ISSN: 1662-8985
DOI: 10.4028/www.scientific.net/amr.243-249.967
Popis: 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.
Databáze: OpenAIRE