Weiche und steife aktive Reibungsbeeinflussung durch Schwingungen und deren Energieeffizienz

Translated title of the contribution: Stiff and soft active control of friction by vibrations and their energy efficiency

J. Benad, M. Popov, K. Nakano, V. L. Popov

Research output: Contribution to journalArticle

Abstract

The present paper builds upon the results of two recent theoretical studies on the influence of friction by normal and sideways oscillations. The findings are in part rewritten to a more compact and dimensionless form so as to present the results for both oscillation modes side by side in a consistent manner. Thereby, it is shown that for the considered system the macroscopic coefficient of friction is only a function of a dimensionless sliding velocity and a dimensionless oscillation amplitude. Furthermore, the energy efficiency is characterized for both modes for the first time by comparing the total energy needed for a sliding motion which includes the superimposed oscillations with the energy needed for the same sliding motion without the additional oscillations. It is shown that this ratio is also only a function of the two dimensionless system parameters. We consider a simple one-spring model in a displacement-controlled setting. Any system-dynamical feedback is neglected. The lower end of the spring either slides, sticks or jumps on a rigid plane. In the case of normal oscillations, the macroscopic coefficient of friction can be reduced only when the contact point undergoes a stick-slip motion (“stiff control of friction”) whereas with sideways oscillations the macroscopic coefficient of friction can be reduced also when the contact point is continuously sliding (“soft control of friction”). It is found that the motion with superimposed sideways oscillations requires more energy for any combination of system parameters, than the corresponding motion without the oscillations. For the case of normal oscillations however, there are combinations of system parameters for which the motion with the superimposed oscillations requires less, the same, or more energy than for the reference case without the oscillations.

Original languageGerman
Pages (from-to)331-339
Number of pages9
JournalForschung im Ingenieurwesen/Engineering Research
Volume82
Issue number4
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Energy efficiency
Friction
Point contacts
Motion control
Dynamical systems
Feedback

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Weiche und steife aktive Reibungsbeeinflussung durch Schwingungen und deren Energieeffizienz. / Benad, J.; Popov, M.; Nakano, K.; Popov, V. L.

In: Forschung im Ingenieurwesen/Engineering Research, Vol. 82, No. 4, 01.12.2018, p. 331-339.

Research output: Contribution to journalArticle

@article{506d6e7898b640698217a2a1b1473702,
title = "Weiche und steife aktive Reibungsbeeinflussung durch Schwingungen und deren Energieeffizienz",
abstract = "The present paper builds upon the results of two recent theoretical studies on the influence of friction by normal and sideways oscillations. The findings are in part rewritten to a more compact and dimensionless form so as to present the results for both oscillation modes side by side in a consistent manner. Thereby, it is shown that for the considered system the macroscopic coefficient of friction is only a function of a dimensionless sliding velocity and a dimensionless oscillation amplitude. Furthermore, the energy efficiency is characterized for both modes for the first time by comparing the total energy needed for a sliding motion which includes the superimposed oscillations with the energy needed for the same sliding motion without the additional oscillations. It is shown that this ratio is also only a function of the two dimensionless system parameters. We consider a simple one-spring model in a displacement-controlled setting. Any system-dynamical feedback is neglected. The lower end of the spring either slides, sticks or jumps on a rigid plane. In the case of normal oscillations, the macroscopic coefficient of friction can be reduced only when the contact point undergoes a stick-slip motion (“stiff control of friction”) whereas with sideways oscillations the macroscopic coefficient of friction can be reduced also when the contact point is continuously sliding (“soft control of friction”). It is found that the motion with superimposed sideways oscillations requires more energy for any combination of system parameters, than the corresponding motion without the oscillations. For the case of normal oscillations however, there are combinations of system parameters for which the motion with the superimposed oscillations requires less, the same, or more energy than for the reference case without the oscillations.",
author = "J. Benad and M. Popov and K. Nakano and Popov, {V. L.}",
year = "2018",
month = "12",
day = "1",
doi = "10.1007/s10010-018-0281-1",
language = "Немецкий",
volume = "82",
pages = "331--339",
journal = "Forschung im Ingenieurwesen/Engineering Research",
issn = "0015-7899",
publisher = "Springer Verlag",
number = "4",

}

TY - JOUR

T1 - Weiche und steife aktive Reibungsbeeinflussung durch Schwingungen und deren Energieeffizienz

AU - Benad, J.

AU - Popov, M.

AU - Nakano, K.

AU - Popov, V. L.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - The present paper builds upon the results of two recent theoretical studies on the influence of friction by normal and sideways oscillations. The findings are in part rewritten to a more compact and dimensionless form so as to present the results for both oscillation modes side by side in a consistent manner. Thereby, it is shown that for the considered system the macroscopic coefficient of friction is only a function of a dimensionless sliding velocity and a dimensionless oscillation amplitude. Furthermore, the energy efficiency is characterized for both modes for the first time by comparing the total energy needed for a sliding motion which includes the superimposed oscillations with the energy needed for the same sliding motion without the additional oscillations. It is shown that this ratio is also only a function of the two dimensionless system parameters. We consider a simple one-spring model in a displacement-controlled setting. Any system-dynamical feedback is neglected. The lower end of the spring either slides, sticks or jumps on a rigid plane. In the case of normal oscillations, the macroscopic coefficient of friction can be reduced only when the contact point undergoes a stick-slip motion (“stiff control of friction”) whereas with sideways oscillations the macroscopic coefficient of friction can be reduced also when the contact point is continuously sliding (“soft control of friction”). It is found that the motion with superimposed sideways oscillations requires more energy for any combination of system parameters, than the corresponding motion without the oscillations. For the case of normal oscillations however, there are combinations of system parameters for which the motion with the superimposed oscillations requires less, the same, or more energy than for the reference case without the oscillations.

AB - The present paper builds upon the results of two recent theoretical studies on the influence of friction by normal and sideways oscillations. The findings are in part rewritten to a more compact and dimensionless form so as to present the results for both oscillation modes side by side in a consistent manner. Thereby, it is shown that for the considered system the macroscopic coefficient of friction is only a function of a dimensionless sliding velocity and a dimensionless oscillation amplitude. Furthermore, the energy efficiency is characterized for both modes for the first time by comparing the total energy needed for a sliding motion which includes the superimposed oscillations with the energy needed for the same sliding motion without the additional oscillations. It is shown that this ratio is also only a function of the two dimensionless system parameters. We consider a simple one-spring model in a displacement-controlled setting. Any system-dynamical feedback is neglected. The lower end of the spring either slides, sticks or jumps on a rigid plane. In the case of normal oscillations, the macroscopic coefficient of friction can be reduced only when the contact point undergoes a stick-slip motion (“stiff control of friction”) whereas with sideways oscillations the macroscopic coefficient of friction can be reduced also when the contact point is continuously sliding (“soft control of friction”). It is found that the motion with superimposed sideways oscillations requires more energy for any combination of system parameters, than the corresponding motion without the oscillations. For the case of normal oscillations however, there are combinations of system parameters for which the motion with the superimposed oscillations requires less, the same, or more energy than for the reference case without the oscillations.

UR - http://www.scopus.com/inward/record.url?scp=85053677235&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053677235&partnerID=8YFLogxK

U2 - 10.1007/s10010-018-0281-1

DO - 10.1007/s10010-018-0281-1

M3 - Статья

VL - 82

SP - 331

EP - 339

JO - Forschung im Ingenieurwesen/Engineering Research

JF - Forschung im Ingenieurwesen/Engineering Research

SN - 0015-7899

IS - 4

ER -