<abstract xmlns="http://www.w3.org/1999/xhtml"><p>This paper concentrates on the vibrations attenuation of a rotor driven by a DC motor and its frame flexibly coupled with a baseplate by linear cylindrical helical springs and damped by an element that can work either in inertia or impact regime. The system oscillation is governed by three mutually coupled second-order ordinary differential equations. The nonlinear behaviour occurs if the impact regime is adjusted. The damping element operating in inertia mode reduces efficiently the oscillations amplitude only in a narrow frequency interval. In contrast, the damping device working in impact regime attenuates vibrations of the rotor frame in a wider range of the excitation frequencies and it can be easily extended if the clearances between the rotor casing and the damping element are controlled. The development of a computational procedure for investigation of vibration of a flexibly supported rotor and for its attenuation by the inertia and impact dampers; learning more on efficiency of the individual damping regimes; finding possibilities of extension of the frequency intervals of applicability of the damping device; and obtaining more information on the character of the vibration induced by impacts are the main contributions of this research work.</p></abstract>

This paper concentrates on the vibrations attenuation of a rotor driven by a DC motor and its frame flexibly coupled with a baseplate by linear cylindrical helical springs and damped by an element that can work either in inertia or impact regime. The system oscillation is governed by three mutually coupled second-order ordinary differential equations. The nonlinear behaviour occurs if the impact regime is adjusted. The damping element operating in inertia mode reduces efficiently the oscillations amplitude only in a narrow frequency interval. In contrast, the damping device working in impact regime attenuates vibrations of the rotor frame in a wider range of the excitation frequencies and it can be easily extended if the clearances between the rotor casing and the damping element are controlled. The development of a computational procedure for investigation of vibration of a flexibly supported rotor and for its attenuation by the inertia and impact dampers; learning more on efficiency of the individual damping regimes; finding possibilities of extension of the frequency intervals of applicability of the damping device; and obtaining more information on the character of the vibration induced by impacts are the main contributions of this research work.

Vibrations attenuation of a system excited by unbalance and the ground movement by an impact element

Applied Mathematics and Nonlinear Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This paper concentrates on the vibrations attenuation of a rotor driven by a DC motor and its frame flexibly coupled with a baseplate by linear cylindrical...

Vibrations attenuation of a system excited by unbalance and the ground movement by an impact element

Publié en ligne: 08 déc. 2016

Pages: 603 - 616

Reçu: 11 sept. 2016

Accepté: 08 déc. 2016

DOI: https://doi.org/10.21042/AMNS.2016.2.00046

Mots clés
Rotating system, Damping effect, Inertia damper, Impacts, Vibration attenuation

© 2016 Marek Lampart, Jaroslav Zapoměl, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Vibrations attenuation of a system excited by unbalance and the ground movement by an impact element

Publié en ligne: 08 déc. 2016

Pages: 603 - 616

Reçu: 11 sept. 2016

Accepté: 08 déc. 2016

DOI: https://doi.org/10.21042/AMNS.2016.2.00046

Mots clésRotating system, Damping effect, Inertia damper, Impacts, Vibration attenuation

© 2016 Marek Lampart, Jaroslav Zapoměl, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Rotating system, Damping effect, Inertia damper, Impacts, Vibration attenuation