Influence of a relatively high frequency structure vibrations on the dynamics of real stick-slip motion
Data
2021
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Wydawnictwo Politechniki Łódzkiej
Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.
Lodz University of Technology Press
Lodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics.
Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.
Lodz University of Technology Press
Lodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics.
Abstrakt
The work concerns the research on the impact of structure vibrations on the dynamics
of frictional contact of bodies moving in relation to each other and remaining in frictional
contact, causing a stick-slip motion. A literature review was carried out, describing
mainly the phenomena concerning friction, but also the dynamics of vibrations and non-ideal
energy sources that induce system oscillations. In the next step an experimental station for investigation
of friction equipped with a new subsystem inducing high-frequency vibrations is
presented to propose a modified physical model of the investigated frictional system. After
analysing the most important factors influencing the behavior of the tested system, a mathematical
description was prepared, which in theory showed the potential influence of the attached
subsystem on the dynamics of the movement of the tested object - the frictional connection.
Various methods of implementing the unbalance of rotors, being the source of highfrequency
excitation, have been considered. At the final stage, a series of measurements of the
displacement of the vibrating block on the moving belt was performed with the highfrequency
excitation turned on and off. The prepared graphs were used to analyse the dynamics
of frictional contact and the impact of non-autonomous vibrations on the occurrence of the
stick-slip phenomenon.
Opis
Słowa kluczowe
stick-slip, measurements, mechanical vibrations, experimental station, pomiary, drgania mechaniczne, stanowisko doświadczalne
Cytowanie
Olejnik P., Górniak vel Górski A., Cebulak M., Awrejcewicz J., Influence of a relatively high frequency structure vibrations on the dynamics of real stick-slip motion. W:
DSTA-2021 Conference Books – Abstracts (16th International Conference : Dynamical Systems Theory and Applications DSTA 2021 ABSTRACTS), Awrejcewicz J. (red.), Kaźmierczak M. (red.), Olejnik P. (red.), Mrozowski J. (red.), Wydawnictwo Politechniki Łódzkiej ; Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki, Łódź 2021, s. 759-760, ISBN 978-83-66741-20-1.