Does Curve Veering Occur in the Eigenvalue Problem of Rotors?

[+] Author and Article Information
Yang-Gyu Jei

Shafting and Rotor Dynamics Laboratory, Korea Research Institute of Ships and Ocean Engineering, Dae Duk Science Town, Korea

Chong-Won Lee

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Dae Duk Science Town, Korea

J. Vib. Acoust 114(1), 32-36 (Jan 01, 1992) (5 pages) doi:10.1115/1.2930229 History: Received June 01, 1990; Online June 17, 2008


Recently, Crandall and Yeh (1989) reported an interesting phenomenon in the Campbell diagram of a single spool machine. In their words, “It is interesting that . . . the two modes form a coupled system and the curves repel each other avoiding an intersection” in the Campbell diagram, which is the so-called curve veering in the eigenvalue problem. In this paper, the existence of the curve veering in the eigenvalue problem of general rotor-bearing systems are verified and the criteria of the curve veering is evaluated. The abrupt but continuous changes of mode shapes during veering are also illustrated.

Copyright © 1992 by The American Society of Mechanical Engineers
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