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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1340

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dc.contributor.authorDarpe, A K-
dc.contributor.authorGupta, K-
dc.contributor.authorChawla, A-
dc.date.accessioned2006-02-20T09:17:46Z-
dc.date.available2006-02-20T09:17:46Z-
dc.date.issued2004-
dc.identifier.citationJournal of Sound and Vibration, 269(1-2), 33-60en
dc.identifier.urihttp://eprint.iitd.ac.in/dspace/handle/2074/1340-
dc.description.abstractThe coupling between longitudinal, lateral and torsional vibrations is studied together for a rotating cracked shaft. These coupling mechanisms have been studied here with a response-dependent non-linear breathing crack model. Most of the earlier work on coupled vibrations due to crack has been either on stationary shaft or on rotating shaft with open crack model. The stiffness matrix of a Timoshenko beam element is modified to account for the effect of a crack and all the six degrees of freedom per node are considered. Coupled torsional–longitudinal vibrations for a cracked rotor that has not been reported earlier and coupled torsional–bending vibrations with a breathing crack model have been studied. An attempt has been made to reveal crack specific signatures by using additional external excitations. Since all the couplings are accounted, the excitation in one mode leads to an interaction between all the modes. This, coupled with the rotational effect of a cracked rotor and the non-linearities due to a breathing crack model introduces sum and difference frequencies in the response of cracked rotor. The co-existence of frequencies of other modes in the frequency spectra of a particular mode and the presence of sum and difference frequencies around the excitation frequencies and its harmonics could be useful indicators for crack diagnosis.en
dc.format.extent1267388 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.subjectlongitudinalen
dc.subjecttorsional vibrationsen
dc.subjectcrackeden
dc.subjectcoupled vibrationsen
dc.subjectcoupled torsional–longitudinal vibrationsen
dc.subjecta cracked rotoren
dc.subjectcoupled torsional–bending vibrations with aen
dc.subjectcoupleden
dc.subjecta cracked rotoren
dc.titleCoupled bending, longitudinal and torsional vibrations of a cracked rotoren
dc.typeArticleen
Appears in Collections:Mechanical Engineering

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