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Experimental and numerical analysis of stick-slip suppression with the use of longitudinal tangential vibration

Rybkiewicz Marta, Gutowski Paweł, Leus Mariusz

Journal of Theoretical and Applied Mechanics

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2020

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Vol. 58 nr 3

637--648

EN

The results of experimental tests and numerical simulation analyses of the possibility of partial reduction or entire elimination the stick-slip phenomenon in sliding motion through introduction of longitudinal tangential vibrations to the contact zone of a shifted body and the substrate are shown in the paper. The experimental tests were carried out on a specially designed stand. In the computational model, the dynamic equation of motion of the shifted body was used, and for the friction force description the LuGre model was adopted. A excellent consistency of the experimentally determined results with those calculated with the use of the developed model is obtained.

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Experimental investigations of elimination the stick-slip phenomenon in the presence of longitudinal tangential vibration

Leus Mariusz, Abrahamowicz Marta

Acta Mechanica et Automatica

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2019

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Vol. 13, no. 1

45--50

EN

The article presents a scheme and description of the test stand as well as selected experimental results of the influence of longitudinal tangential vibrations on the stick-slip phenomenon. The tests were carried out at a constant forced vibration frequency f = 2000 Hz, as a function of the amplitude of the vibration velocity va. The position of the sliding body and the drive force necessary to make the body slip and maintain this motion were measured. The measurements were made in two successive stages. In the first stage, when the substrate on which the sliding occurred was stationary. In the second one, the substrate is in a vibrating motion in the direction parallel to the slip. The conducted experimental analyses have shown that longitudinal tangential vibrations can contribute to the reduction or even complete elimination of the stick-slip phenomenon.

3

Badania doświadczalne zjawiska stick-slip i jego eliminacji w obecności drgań stycznych wzdłużnych

Leus M.

Modelowanie Inżynierskie

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2018

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T. 37, nr 68

68--74

PL

W pracy przedstawiono stanowisko badawcze i wyniki wstępnych badań doświadczalnych samowzbudnych drgań relaksacyjnych wywołanych tarciem – zjawiska stick-slip oraz jego eliminacji będącej wynikiem wprowadzenia w obszar styku wymuszonych drgań stycznych wzdłużnych. Omówiono wpływ prędkości napędu vn na przebieg ruchu ślizgowego ciała w obecności ciernych drgań samowzbudnych w badanym układzie. Wykazano, że amplituda va prędkości drgań stycznych wzdłużnych wprowadzonych w obszar styku jest parametrem kluczowym, od wartości którego zależy stopień redukcji zjawiska stick-slip.

EN

The paper presents the test stand and the results of preliminary experimental tests of self-induced relaxation vibrations caused by friction – the stick-slip phenomenon and its elimination resulting from the introduction of longitudinal tangential vibrations into the contact area. The influence of the drive velocity vn on the course of sliding movement of the body in the presence of frictional self-induced vibrations in the tested system was discussed. It was demonstrated that the amplitude va of the velocity of longitudinal tangential vibrations introduced into the contact area is a key parameter, the value of which determines the degree of stick-slip phenomenon reduction.