Results 201 to 210 of about 803 (262)

BEATRIX: An open source humanoid head platform for robotics teaching and research. [PDF]

HardwareX
Al GA, Hedworth N, Tilley D, Ahmed S, Afeawo R, Martinez-Hernandez U.   +5 more
europepmc   +1 more source

Magnetic voluntary head-fixation in transgenic rats enables lifespan imaging of hippocampal neurons. [PDF]

Nat Commun
Rich PD, Thiberge SY, Scott BB, Guo C, Tervo DGR, Brody CD, Karpova AY, Daw ND, Tank DW.   +8 more
europepmc   +1 more source

Performance characterization of a novel semi-active exoskeleton for overhead work. [PDF]

Wearable Technol
Schiebl J, Maufroy C, Ziegenspeck N, Giers C, Elmakhzangy B, Schneider U, Bauernhansl T.   +6 more
europepmc   +1 more source

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Ball motion in angular contact bearings

Wear, 1968
Abstract The nature of the frictional forces and moments applied to an angular contact bearing ball is examined in terms of slip, pivoting, spin and precession. Experimental methods for determining these quantities are given, together with results which indicate that the ball is retainer-controlled for pivoting, and race-controlled for slip.
openaire   +2 more sources

Diagnosing Faults of Angular Contact Ball Bearing

Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology, 2006
This paper presents experimental results for diagnosing faults in angular contact ball bearing in rotating systems such as motors or space actuators that nowadays can be found in a variety of consumer products. Some measuring methods of torque in small motors have been summarized.
Ahmad Ghanbari, Sohrab Khanmohamadi, Ghasem Alizadeh, Mohsen Bahrami   +3 more
openaire   +1 more source

Thermo-mechanical analysis of angular contact ball bearing

Journal of Mechanical Science and Technology, 2016
The thermal-mechanical character, which is difficult to ensure because of the lack of a corresponding theory and tool, has a significant effect on the dynamics of bearings. It even leads to a sudden failure of bearings in a working situation. In this research, a thermal deformation model was established, based on the analysis of temperature effect on ...
Wei Bian, Zhenhua Wang, Juntang Yuan, Weiwei Xu   +3 more
openaire   +1 more source

Angular-Contact Ball Bearing Optimization Study.

1995
Abstract : Ongoing studies have indicated that advanced engines will be required to operate at higher temperatures and increased rotor speeds. The object of this project was to find the optimum internal geometry for a high speed, hybrid thrust bearing, which produces minimum heat generation.
Lewis Rosado, Chris Lykins
openaire   +1 more source

Ball Contact Locus in an Angular Contact Bearing

Journal of Lubrication Technology, 1983
The path of contact on the surface of a bearing ball is derived for pure spin and regular precession. Ball-race and ball-ball contacts are considered in a retainerless bearing. Track broadening and equatorial offset are found; quantitative experimental agreement is shown.
openaire   +1 more source

Angular contact ball bearing experimental spall propagation observations

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2014
Modern applications require bearings to survive in severe environments or when subjected to extreme loads and speeds. Some application designs require that a damaged bearing survives a specified duration. In particular, a clearer understanding of spall propagation in bearings may help design engineers prevent rapid damage propagation events and ...
Michael L French, William M Hannon
openaire   +1 more source

Multi-Body Contact Dynamics Analysis of Angular Contact Ball Bearing

Applied Mechanics and Materials, 2013
The 3-D multi-body contact dynamics simulation model was built by ADAMS base on the Hertz contact theory and multi-body contact dynamics, which considered the dynamics relationship among the ball, ring and cage of the bearing. Considering the clearancesfrictions and loads, results that contained deformation and displacement of the bearing, trajectory ...
Kun Feng Jin, Ting Qiang Yao
openaire   +1 more source