Title: Dynamic behavior of Jeffcott rotors with an arbitrary slant crack orientation on the shaft
Authors: Ramezanpour, Reza
Ghayour, Mostafa
Ziaei-Rad, Saeed
Citation: Applied and Computational Mechanics. 2012, vol. 6, no. 1, p. 36-52.
Issue Date: 2012
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/157/158
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: dynamické chování;rotorové systémy;sklon trhliny;matice shody;spektrum odezvy
Keywords in different language: dynamic behaviour;rotor systems;slant crack;compliance matrix;response spectrum
Abstract: Dynamic behaviour of a Jeffcott rotor system with a slant crack under arbitrary crack orientations is investigated. Using concepts of fracture mechanics, flexibility matrix and stiffness matrix of the system are calculated. The system equations motion is obtained in four directions, two transversal, one torsional and one longitudinal, and then solved using numerical method. In this paper a symmetric relation for global stiffness matrix is presented and proved; whereas there are some literatures that reported nonsymmetrical form for this matrix. The influence of crack orientations on the flexibility coefficients and the steady-state response of the system are also investigated. The results indicate that some of the flexibility coefficients are greatly varied by increasing the crack angle from 30◦ to 90◦ (transverse crack). It is also shown that some of the flexibility coefficients take their maximum values at (approximately) 60◦ crack orientation.
Rights: © 2012 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 6, number 1 (2012)
Volume 6, number 1 (2012)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/1306

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