Results 261 to 270 of about 6,166,451 (341)

Armature contact load dynamics

IEEE Transactions on Magnetics, 1995
Railgun armature contact forces are often treated as a "quasi-static" parameter. The magnetic loading of the armature is treated as time varying, but the structural response is treated statically. In this paper, the authors look at the dynamic response of trailing arm armatures to rail variations caused by surface imperfections and barrel straightness.
E.A. Knoth, D.P. Bauer
openaire   +2 more sources

Contact Load and Stiffness of Four-Point Contact Ball Bearings Under Loading

International Journal of Precision Engineering and Manufacturing, 2022
Gilbert Rivera, Van-Canh Tong, Seong-Wook Hong   +2 more
openaire   +2 more sources

Modeling of contact load distribution of planetary threaded roller bearing based on deformation coordination

Mechanics based design of structures and machines, 2021
Planetary threaded roller bearing (PTRB) mainly consists of an outer ring, an inner ring, and rollers and all these parts have multiple annular threads.
J. Ni, Jihui Yin, Dandan Li, Jiuqing Liu, Zhijie Xie   +4 more
semanticscholar   +1 more source

Investigation on the angular contact ball bearings under low speed and heavy load with coupled mixed lubrication and quasi‐dynamic analysis

Lubrication Science, 2020
In this paper, the angular contact ball bearings under low‐speed and heavy‐load conditions is studied with a coupled numerical method of mixed elastohydrodynamic lubrication (EHL) and quasi‐dynamic analysis.
Jiqiang Wu, Liqin Wang, T. He, L. Gu, Chuanwei Zhang, Yufan Lu   +5 more
semanticscholar   +1 more source

Load tap changers: investigations of contacts, contact wear and contact coking

Proceedings of the Forty-Eighth IEEE Holm Conference on Electrical Contacts, 2003
The Electrical Power Research Institute (EPRI) and BC Hydro (British Columbia, Canada) sponsored a project on improving the maintenance of "on-load tap changers" (LTC). The investigation of contacts focused on stationary reversing switch assemblies (Part 1) and diverter switch contacts (Part 2).
H.-U. Schellhase, R.G. Pollock, A.S. Rao, E.C. Korolenko, B. Ward   +4 more
openaire   +1 more source

SpinyHand: Contact Load Sharing for a Human-Scale Climbing Robot

Journal of Mechanisms and Robotics, 2019
We present a hand specialized for climbing unstructured rocky surfaces. Articulated fingers achieve grasps commonly used by human climbers. The gripping surfaces are equipped with dense arrays of spines that engage with asperities on hard rough materials.
Shiquan Wang, Hao Jiang, Tae Myung Huh, Danning Sun, Wilson Ruotolo, Matthew William Miller, William R. T. Roderick, Hannah S. Stuart, M. Cutkosky   +8 more
semanticscholar   +1 more source

Lactoferrin-Loaded Contact Lenses

Cornea, 2015
Tear fluid contains antioxidative compounds, vitamin C, glutathione, superoxide dismutase, and lactoferrin (LF), which protect the corneal epithelium from the effects of ultraviolet irradiation, direct airflow, and chemical agents. However, these natural defenses against oxidative stress can decrease, favoring the development of anterior eye disorders,
PASTORI, VALENTINA, TAVAZZI, SILVIA, LECCHI, MARZIA MARIA   +2 more
openaire   +2 more sources

Oscillatory loading of a viscoelastic adhesive contact

Journal of Colloid and Interface Science, 2006
The cycle of loading and unloading of a spherically-tipped probe against an adhesive, viscoelastic plane specimen is studied by numerical integration of the relations between crack speed and apparent surface energy previously found for a linear 3-element viscoelastic solid with a Maugis-Dugdale law of force across the crack.
J A, Greenwood, K L, Johnson
openaire   +2 more sources