New Experimental Data on External Friction

Tolstoi, D. M.; Kaplan, RM; Lin, Fanghua; Pin-yao, P’an

doi:10.1007/978-1-4899-5085-7_15

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“…In the foregoing discussion of the chemical aspects of boundary friction, the distinction between static and kinetic friction has not been stressed. Actually there is a growing feeling that the distinction between them is artificial [2], [59]. It is generally, agreed that a very sensitive velocity or displacement transducer, set up to measure any relative movement between two surfaces, would show that, beginning, with the first application of tangential force, there is always a small amount of displacement (of the order of micro-inches) between the surfaces.…”

Section: If a Q Represents The Proportion Of Solid-solid Contacts In Anmentioning

confidence: 99%

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Viscoelastic effects in boundary lubrication

1974

International Journal of Rock Mechanics and Mining Sciences &am

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In presenting this thesis in partial fulfilment of the requirements for an advanced degree at The University of British Columbia, I agree that the Library shall make it freely available for reference and study. I further agree that permission for extensive copying of this thesis for scholarly purposes may be granted by the Head of my Department or by his representatives. It is understood that publication, in part or in whole, cr the copying of this thesis for financial gain shall not be allowed without my written permission. ABSTRACTThe static friction of steel under boundary lubricated conditions was investigated both experimentally and theoretically.The theoretical model was developed using the assumption that during the application of a tangential load to a friction couple, the real area of contact grows in a viscoelastic manner until a critical shear stress is reached. Using this model, it was possible to distin-i i i Both the experimental and theoretical work clearly demonstrate that the static friction of steel can be significantly modified by the application of appropriate boundary lubricants.

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Section: If a Q Represents The Proportion Of Solid-solid Contacts In Anmentioning

confidence: 99%

“…Thus, the surfaces are never in a true "static" contact situation. Recognizing this fact, some researchers [59] argue that the "static friction coefficient is merely the local maximum on the "kinetic" friction curve.…”

Section: If a Q Represents The Proportion Of Solid-solid Contacts In Anmentioning

confidence: 99%

Viscoelastic effects in boundary lubrication

1974

International Journal of Rock Mechanics and Mining Sciences &am

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New Experimental Data on External Friction

Cited by 1 publication

References 1 publication

Viscoelastic effects in boundary lubrication

Viscoelastic effects in boundary lubrication

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