Coupled Vibration of Cracked Shafts

[+] Author and Article Information
C. A. Papadopoulos

Machine Design Laboratory, Mechanical Engineering Dept., University of Patras, Patras 26000, Greece

A. D. Dimarogonas

Mechanical Engineering Dept., Washington University, St. Louis, MO 63130

J. Vib. Acoust 114(4), 461-467 (Oct 01, 1992) (7 pages) doi:10.1115/1.2930285 History: Received October 01, 1990; Online June 17, 2008


The coupling of vibration modes of vibration of a clamped-free circular cross-section Timoshenko beam with a transverse crack is investigated in this paper. A 6 × 6 local flexibility matrix is used to simulate the crack. The nondiagonal terms of this matrix cause coupling between the longitudinal, torsional, and bending vibrations. Coupling is apparent in all spectra obtained with a harmonic sweeping excitation throughout the frequency range. The method is very sensitive even for small cracks.

Copyright © 1992 by The American Society of Mechanical Engineers
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