Modeling of a Simple Rotor With a Switching Crack and Its Experimental Verification

[+] Author and Article Information
Chong-Won Lee, Jong-Seop Yun

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Taedok Science Town, Taejon, Korea

Oh Sung Jun

Acoustics and Vibration Laboratory, Korea Research Institute of Standards and Science, Taedok Science Town, Taejon, Korea

J. Vib. Acoust 114(2), 217-225 (Apr 01, 1992) (9 pages) doi:10.1115/1.2930251 History: Received February 01, 1991; Online June 17, 2008


The switching crack model having two different stiffnesses, depending upon the crack status, is developed. The necessary conditions for the crack opening/closing states are then analytically derived from a simple rotor with a switching crack. The validity of the switching crack model and the crack opening/closing conditions is proved through numerical simulations and experiments, and a crack identification scheme based on the analysis is also proposed.

Copyright © 1992 by The American Society of Mechanical Engineers
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