fwjТрение и и износTitle in english0000-00000000-0000AGU10.32864/0202-4977-2024-45-2-129-140fwj-14Research ArticleСтатьиЭкспериментальное исследование влияния влажности на структурные изменения «третьего тела» в процессе тренияExperimental Study of Effect of Humidity on Structural Changes of “Third Body” During FrictionHorngJ. H.HorngJ. H.

Yunlin, 632

Yunlin, 632

ТорскаяЕ. В.TorskayaE. V.

Проспект Вернадского, д. 101, корп. 1, г. Москва 119526

Prospekt Vernadskogo, 101-1, Moscow 119526

torskaya@mail.ruМезринА. М.MezrinA. M.

Проспект Вернадского, д. 101, корп. 1, г. Москва 119526

Prospekt Vernadskogo, 101-1, Moscow 119526

ОсипенкоН. М.OsipenkoN. M.

Проспект Вернадского, д. 101, корп. 1, г. Москва 119526

Prospekt Vernadskogo, 101-1, Moscow 119526

National Formosa UniversityТайваньNational Formosa UniversityTaiwan, Province of ChinaФедеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наукРоссияIshlinsky Institute for Problems in Mechanics, Russian Academy of SciencesRussian Federation202426092026452129140Copyright © AGU, 20262026AGUAGUhttps://fwj.ejournal.by/jour/about/submissions#copyrightNoticehttps://fwj.ejournal.by/jour/article/view/14

Трение часто сопровождается локальным разрушением на границе контактирующих тел. Пространство между контактирующими телами обычно содержит движущиеся частицы различной природы, так называемое «третье тело», изменение эффективных условий трения может быть связано с изменением структуры площади контакта. В данной работе представлена новая серия экспериментов, в которых на разных масштабных уровнях моделируется процесс перестроения частиц промежуточного слоя, взаимодействующих с различными упругими материалами (стекло—резина и сталь). Предложена методика визуализации эффекта взаимного влияния, возникающего при вдавливании двух шариков в слой резины. Именно взаимное влияние обуславливает эффект сближения либо сепарации шариков при возвратно-поступательном фрикционном нагружении. Скорость этих процессов зависит от влажности и, в случае контакта с резиновым слоем, от толщины слоя. При большой влажности конфигурация частиц меняется быстрее, а сила трения уменьшается. Замена песка на абразив приводит к резкому росту коэффициента трения и износу с изменением микрорельефа поверхности. Минимальная шероховатость получена для влажности 30 %.

Friction is often accompanied by local fracture at the boundary of the contacting bodies. The gap between the bodies usually contains moving particles of different origin (third body), a change in the effective friction conditions may be associated with some changes in the structure of the “third body”. This paper presents a new series of experiments in which the process of rearrangement of intermediate layer particles interacting with various elastic materials (glass-rubber and steel) is modeled at different scale levels. A technique for visualizing the effect of mutual influence that occurs when two balls are pressed into a layer of rubber is proposed. It is the mutual influence that causes the effect of convergence or separation of the balls or particles during reciprocating frictional loading. The velocity of these processes depends on humidity and, in case of contact with the rubber layer, on the thickness of the layer. At high humidity, the configuration of the particles changes faster, and the friction force decreases. Replacing sand with an abrasive leads to increase in the coefficient of friction and wear with a change in the microrelief of the surface. The minimum roughness is obtained for a humidity of 30 %.

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The authors declare that there are no conflicts of interest present.