Development and validation of a new experimental method to identify damping matrices of a dynamic system

Jay H. Kim; Joon Hyun Lee

doi:10.1117/12.432712

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2 July 2001 Development and validation of a new experimental method to identify damping matrices of a dynamic system

Jay H. Kim, Joon Hyun Lee

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Proceedings Volume 4331, Smart Structures and Materials 2001: Damping and Isolation; (2001) https://doi.org/10.1117/12.432712
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

A new procedure is developed to identify damping in a dynamic system as damping matrices in the equation of motion from the dynamic stiffness matrix, which is obtained by inverting the measured frequency response function matrix. It is shown that the method provides the most direct and shortest path to finding dampened matrices. The procedure is applied to a theoretical example and two real structures for its validation, which also reveals unique measurement and signal processing issues related to the technique. Potential applications and possible improvement of the identification method are discussed.

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Jay H. Kim and Joon Hyun Lee "Development and validation of a new experimental method to identify damping matrices of a dynamic system", Proc. SPIE 4331, Smart Structures and Materials 2001: Damping and Isolation, (2 July 2001); https://doi.org/10.1117/12.432712

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