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DEVELOPMENT AND VALIDATION OF A NEW EXPERIMENTAL METHOD TO IDENTIFY DAMPING MATRICES OF A DYNAMIC SYSTEM

✍ Scribed by J.-H. LEE; J. KIM

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
439 KB
Volume
246
Category
Article
ISSN
0022-460X

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✦ Synopsis

As demonstrated in the authors' previous work, damping matrices in the equation of motion of a dynamics system can be identi"ed from the frequency response function matrix (FRM) of the system. A newly developed method with a much simpler algorithm is proposed in this paper for more e!ective damping matrices identi"cation. Theoretical validation of the method and related noise study are conducted using a simple example, which reveals the method's improved features. A set of specially designed measurements are conducted for a qualitative, experimental validation of the identi"cation method. Important measurement issues learned from the experiment, which include needs for phase matching and FRM conditioning, are explained. Possible signi"cant applications of the method are also discussed.

2001 Academic Press

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