Critical velocity of controllability of sliding friction by normal oscillations in viscoelastic contacts; Facta Universitatis. Series: Mechanical Engineering; Vol. 14, iss. 3

Critical velocity of controllability of sliding friction by normal oscillations in viscoelastic contacts; Facta Universitatis. Series: Mechanical Engineering; Vol. 14, iss. 3

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Parent link:Facta Universitatis. Series: Mechanical Engineering.— , 1994-
Vol. 14, iss. 3.— 2016.— [P. 335-341]
Hlavní autor: Popov M. Mikhail
Korporativní autor: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра физики высоких технологий в машиностроении (ФВТМ)
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Sliding friction can be reduced substantially by applying ultrasonic vibration in the sliding plane or in the normal direction. This effect is well known and used in many applications ranging from press forming to ultrasonic actuators. One of the characteristics of the phenomenon is that, at a given frequency and amplitude of oscillation, the observed friction reduction diminishes with increasing sliding velocity. Beyond a certain critical sliding velocity, there is no longer any difference between the coefficients of friction with or without vibration. This critical velocity depends on material and kinematic parameters and is a key characteristic that must be accounted for by any theory of influence of vibration on friction. Recently, the critical sliding velocity has been interpreted as the transition point from periodic stick-slip to pure sliding and was calculated for purely elastic contacts under uniform sliding with periodic normal loading. Here we perform a similar analysis of the critical velocity in viscoelastic contacts using a Kelvin material to describe viscoelasticity. A closed-form solution is presented, which contains previously reported results as special cases. This paves the way for more detailed studies of active control of friction in viscoelastic systems, a previously neglected topic with possible applications in elastomer technology and in medicine.
Jazyk:angličtina
Vydáno: 2016
Témata:
труды учёных ТПУ
электронный ресурс
трение
вибрации
критическая скорость
On-line přístup:http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/2369/1391
Médium: MixedMaterials Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653332

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