A Note on Computational Rotor Dynamics

[+] Author and Article Information
W. J. Chen

Centrifugal Compressor Division, Ingersoll-Rand Company, Mayfieid, Kentucky

J. Vib. Acoust 120(1), 228-233 (Jan 01, 1998) (6 pages) doi:10.1115/1.2893810 History: Received December 01, 1994; Online February 26, 2008


Concise equations for improvements in computational efficiency on dynamics of rotor systems are presented. Two coordinate ordering methods are introduced in the element equations of motion. One is in the real domain and the other is in the complex domain. The two coordinate ordering algorithms lead to compact element matrices. A station numbering technique is also proposed for the system equations during the assembly process. The proposed numbering technique can minimize the matrix bandwidth, the memory storage and can increase the computational efficiency. Numerical examples are presented to demonstrate the benefit of the proposed algorithms.

Copyright © 1998 by The American Society of Mechanical Engineers
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