摘要: The influence of a time-variant normal force on the motion of a pendulum with dry friction is investigated. The main interest is focused on the characteristic of the friction force.关键词: Keywords corneal transplant glaucoma medical and surgical management ...
C, polymer element pressing down the catheter, rigidly connected, via rod E, with forcemeter F; D, an exchangeable counterface; G, DC motor coiling the strand H; (b) I = N/T; T, friction force; N, normal force, which is the difference of a force of gravity Q and a buoyancy W...
The equipment works on the principle of deflection measurements of a flexible cantilever beam with light optical sensors bearing a force resolution of 0.1 μN. As the applied normal force reduces from mNs to μNs, the effect of surface roughness becomes strikingly apparent in the recorded ...
The sphere moves towards the plane, the normal force FZ is maintained constant after the squeeze of the monolayers by using the feedback in the force mode and the sphere is then tangentially displaced. The friction force is measured as a function of sliding distance, at constant normal load....
Ultralow wear in boundary lubrication: A tribological study of bi-alloyed steel under high normal loads and sliding speeds Aleksey V. Makarov, Vitaliy A. Sirosh, Natalia N. Soboleva, [...], Evgeny V. Kharanzhevskiy Available online: 02 December 2024 Research Article Open Access Dynamic...
It publishes the theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as:Friction...
The present results show that the electrostatic effects observed at the microscopic scale17 are also decisive in macroscopic experiments: charged outer surface layers increase friction due to the contribution of Coulomb forces to normal force. The intervening mechanism receives contributions from both ...
FIELD: railway transport.;SUBSTANCE: said utility invention relates to the railway transport, in particular to friction modifiers applied on railway stock wheel treads. Character: the friction and adhesion activator is foam glass.;EFFECT: increase in traction force in difficult track rolling stock oper...
normal load. The large difference in friction was measured under relatively low normal loads. For instance, under the load of 10nN, the friction forces were 0.4 and 1nN for the thin and thick oxide layer, respectively. But under 50nN, the friction force was 0.8 and 1.1nN, respectively. ...
The x-axis shows the ratio of effective normal stress in summer vs. winter, the y-axis shows the ratio of the loading velocity in summer vs. winter. Histograms show the one-dimensional distribution of the scatter points. Orange dashed lines indicate \(1\sigma\) and \(2\sigma\) ...