✦ LIBER ✦

Natural Vibrations of Cracked Shafts Carrying Elastically Mounted End Masses

✍ Scribed by E.H. El-Dannanh; S.H. Farghaly

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 350 KB
Volume: 170
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1994.1090

No coin nor oath required. For personal study only.

✦ Synopsis

The effects of a transverse open crack on the modal frequency parameters of stationary shafts carrying elastically mounted end masses are presented. Dimarogonas' crack model has been considered in the problem formulation. This is a (2 \times 2) local flexibility matrix with coupling terms. Most of the shaft configurations with classical and non-classical support conditions can be studied using the model presented. The modal frequency parameters for different design configurations and crack locations have been computed in order to clarify the vibrational behaviour and to specify the locations in which the crack becomes dangerous from the dynamic design point of view. Modal frequency graphs are provided for some engineering applications which may be of immediate use in design as identification tools for crack diagnosis and analysis.

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