Results 141 to 150 of about 281,766 (191)
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Forms of Static Friction, Sliding Friction and Rolling Friction
World Tribology Congress III, Volume 1, 2005Although, it seems that the concepts of static friction, sliding friction and rolling friction are common knowledges, their real sources are ironically not so clear. Inappropriate descriptions of them may have hampered the theoretical analyses and calculations of the frictions and deterred their applications in real world.
Y. Xu, K. L. Yung
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Journal of Fluids Engineering, 1943
Abstract A new machine is described by means of which static friction between contacting surfaces separated by lubricating films of thickness approaching molecular dimensions can be measured with considerable precision. In a test run, a number of spot determinations of the static coefficient are made at closely spaced points over a short
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Abstract A new machine is described by means of which static friction between contacting surfaces separated by lubricating films of thickness approaching molecular dimensions can be measured with considerable precision. In a test run, a number of spot determinations of the static coefficient are made at closely spaced points over a short
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International Journal of Plasticity, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hashiguchi, K., Ozaki, S.
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zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hashiguchi, K., Ozaki, S.
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2009
Objectives: Bodies in contact exert a force on each other. In the case of ideally smooth surfaces, this force acts perpendicularly to the contact plane. If the surfaces are rough, however, there may also be a tangential force component. Students will learn that this tangential component is a reaction force if the bodies adhere, and an active force if ...
Dietmar Gross +4 more
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Objectives: Bodies in contact exert a force on each other. In the case of ideally smooth surfaces, this force acts perpendicularly to the contact plane. If the surfaces are rough, however, there may also be a tangential force component. Students will learn that this tangential component is a reaction force if the bodies adhere, and an active force if ...
Dietmar Gross +4 more
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Driven Colloidal Monolayers: Static and Dynamic Friction
2014Trapping and dragging colloidal monolayers in two-dimensional optical lattices is offering the possibility to mimic friction between crystals (or even quasicrystals) visualizing directly the intimate mechanisms of sliding friction, with the additional possibility to change parameters freely, and to compare directly experiment with theory.
A. Vanossi, N. Manini, E. Tosatti
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British Journal of Applied Physics, 1955
It is shown that the static friction between a soft metal hemisphere and a flat surface increases with the length of time the surfaces have been in contact and that this increase is due to creep. Such creep might account for the difference between static and dynamic coefficients of friction.
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It is shown that the static friction between a soft metal hemisphere and a flat surface increases with the length of time the surfaces have been in contact and that this increase is due to creep. Such creep might account for the difference between static and dynamic coefficients of friction.
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Journal of the Franklin Institute, 1942
Abstract The factors concerned in friction are discussed, together with a review of the limitations of the various approaches heretofore used. A more satisfactory view of the basic cause of static friction is developed in relation to modern experimental knowledge by considering the pertinent factors in systems having ideal surfaces, then relating ...
Walter Claypoole, Donald B. Cook
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Abstract The factors concerned in friction are discussed, together with a review of the limitations of the various approaches heretofore used. A more satisfactory view of the basic cause of static friction is developed in relation to modern experimental knowledge by considering the pertinent factors in systems having ideal surfaces, then relating ...
Walter Claypoole, Donald B. Cook
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Static Friction and the Law of Rubber Friction
Rubber Chemistry and Technology, 1963Abstract a) The true static friction of vulcanized rubber is in practice immeasurably small (equal to zero, according to theory). b) The static friction as usually determined is an initial friction force. c) The initial friction force is equal to the sliding friction force in accelerated movement.
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An elastoplastic friction compensator with improved static friction behavior
2016 55th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE), 2016Mahvash and Okamura's elastoplastic friction compensator is one of successful friction compensators for robotic joints with compliant transmissions. A limitation of the scheme is that, in the static friction state, the compensator continues commanding non-zero output force, which hampers the system's reaction to external forces.
Masayoshi Iwatani, Ryo Kikuuwe
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Static and Sliding Friction in Feedback Systems
Journal of Applied Physics, 1953One of the most common nonlinearities encountered in servomechanisms design is the friction phenomenon in electromechanical systems. Conventional linear theory fails to predict its effect upon system performance. This paper extends familiar techniques to the treatment of friction nonlinearity in servosystems.
Tou, J., Schultheiß, P. M.
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