Results 21 to 30 of about 115,045 (334)

Synovial joint lubrication – does nature teach more effective engineering lubrication strategies? [PDF]

open access: yes, 2007
Nature shows numerous examples of systems which show energy efficiency, elegance in their design and optimum use of materials. Biomimetics is an emerging field of research in engineering and successes have been documented in the diverse fields of ...
Liskiewicz, T.   +3 more
core   +1 more source

Atomically thin MoS2 with ultra-low friction properties based on strong interface interaction

open access: yesFriction
Atomically thin lubrication materials with anti-friction properties are crucial for reducing energy consumption and extending the service life of micro/nanoelectromechanical systems (MEMS/NEMS).
Xinjian He   +10 more
doaj   +1 more source

Weak solutions to lubrication equations in the presence of strong slippage [PDF]

open access: yes, 2010
The existence of global weak solutions is proved for one-dimensional lubrication models that describe the dewetting process of nanoscopic thin polymer films on hydrophobyzed substrates and take account of large slippage at the polymer-substrate interface.
Kitavtsev, Georgy   +2 more
core   +3 more sources

Comparative analysis of emulsion pump stations of RMI and KAMAT

open access: yesGong-kuang zidonghua, 2019
Overall structure of KAMAT pump station and RMI pump station which have high domestic market share were introduced. Key technologies in terms of deceleration system, hydraulic system, lubrication system, protection system and control system were ...
YE Jia
doaj   +1 more source

Influence of the balancing of the oil supply to the connecting bearings on their operations failures

open access: yesИнтеллект. Инновации. Инвестиции, 2019
The relevance of the study is due to the need to study the laws of processes and phenomena leading to disruption of the normal functioning of the connecting rod bearings of automobile engines in operation and causing sudden costly failures.
A.T. Kulakov   +2 more
doaj   +1 more source

PASSIVE TORQUE SIMULATION OF SMALL ANGULAR CONTACT BEARING AT HIGH SPEED [PDF]

open access: yes, 2017
Description of common ball bearing torque models was presented and adopted to the complex thermo-mechanical model of the high speed spindle. Ball bearing passive torque was measured on the own high-speed spindle design.
Kekula J., Smolík J., Sulitka M.
core   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

open access: yesAdvanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Identification of Bearing Dynamic Parameters and Unbalanced Forces in a Flexible Rotor System Supported by Oil-Film Bearings and Active Magnetic Devices

open access: yesActuators, 2021
As the rotational speed of conventional rotor systems supported by oil-film bearings has increased, vibration problems such as oil whip and oil whirl have become apparent.
Yinsi Chen   +4 more
doaj   +1 more source

Two-speed wheel-drive system without lubrication [PDF]

open access: yes, 1970
System based on sprockets and toothed belts provides high and low speeds in forward drive and high speed in reverse.
Burch, J. L.
core   +1 more source

A coupled finite-volume CFD solver for two-dimensional elasto-hydrodynamic lubrication problems with particular application to rolling element bearings [PDF]

open access: yes, 2016
This paper describes a new computational fluid dynamics methodology for modelling elastohydrodynamic contacts. A finite-volume technique is implemented in the ‘OpenFOAM’ package to solve the Navier-Stokes equations and resolve all gradients in a ...
Dini, D   +3 more
core   +1 more source

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