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AN EFFICIENT METHOD FOR THE UNBALANCE RESPONSE ANALYSIS OF ROTOR-BEARING SYSTEMS

✍ Scribed by S.-W. Hong; J.-H. Park

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
316 KB
Volume
200
Category
Article
ISSN
0022-460X

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✦ Synopsis

Unbalance response analysis is essential in the dynamic analysis of rotor-bearing systems. However, there still remains a problem in the aspect of computational efficiency for unbalance response analysis of large rotor-bearing systems. Gyroscopic terms and local bearing parameters in rotor-bearing systems often make matters worse in unbalance response computation, due to the complicated dynamic properties such as rotational speed dependency and/or anisotropy. In the present paper an efficient method is proposed for unbalance responses of multi-span rotor-bearing systems. An improved substructure synthesis scheme is introduced which makes it possible to compute unbalance responses of the system by coupling unbalance responses of substructures and is easy to manage. The proposed method includes also a scheme to deal with gyroscopic terms and local, coupling or bearing parameters easily. The proposed method causes no errors, even though the computation time is drastically reduced. The proposed method is demonstrated and validated through several test examples.

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