Title: Blade couple with dry friction connection
Authors: Půst, Ladislav
Pešek, Luděk
Radolfová, Alena
Citation: Applied and Computational Mechanics. 2015, vol. 9, no. 1, p. 31-40
Issue Date: 2015
Publisher: University of West Bohemia
Document type: článek
URI: http://www.kme.zcu.cz/acm/acm/article/view/277/325
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: výpočtová mechanika;vibrace;olopatkované disky;matematické modelování
Keywords in different language: stick-slip dry friction;tangential contact stiffness;hysteresis loop;response curves
Abstract: Vibration of a blade couple damped by a dry friction contact in the shroud is investigated by means of hysteresis loops and response curves analysis. The studied system is excited by one harmonic external force in a frequency range near to the lowest eigenfrequency of real blades. Blades are connected by means of a damping element consisting of dry friction part linked in series with linear spring. This “stick-slip” damping element is supposed to be either weightless or of a very small mass which models the mass of elastically deformed parts of contacting bodies near the friction surface. Two approximate mathematical models of “stick-slip” dry friction elements are suggested and analysed. The response curves of blade couple connected by stick-slip damping element are presented for different values of slip friction forces and two values of mass of elastically deformed parts.
Rights: © 2015 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 9, number 1 (2015)
Volume 9, number 1 (2015)

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Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/15515

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