Zobrazeno 1 - 10
of 306
pro vyhledávání: '"friction forces"'
Publikováno v:
Праці Інституту електродинаміки Національної академії наук України, Vol 2024, Iss 68, Pp 43-49 (2024)
The iterative two-channel feed electric drive (ED) with the summation of movements on the rotating sliding nut (RSN) is designed to increase the speed and accuracy of traditional single-channel ED feed mechanisms (FM) of metal-cutting machines with a
Externí odkaz:
https://doaj.org/article/0e7256702bb845028edd7dea83ae522a
Autor:
Abbas F. Abbas Al-Zubaidi
Publikováno v:
Journal of Engineering, Vol 14, Iss 04 (2024)
In this paper, several sliding friction formulations used in spur gear dynamics are examined and compared in terms of the predictions of interfacial friction forces and off-line-of-action. Computing friction formulations include Coulomb models with t
Externí odkaz:
https://doaj.org/article/52b51b33c0034cdf90c6ccac037e5851
Akademický článek
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Autor:
Leandro Ratamero, Paulo Vencovsky
Publikováno v:
Vetor, Vol 32, Iss 1 (2022)
In internal combustion engines, the valvetrain is responsible for up to 25% of the friction losses, at rotational frequencies below 2000 rpm. Important friction losses in valvetrain come from the contact between the cam and the tappet. Despite to man
Externí odkaz:
https://doaj.org/article/a77538e8b5ba436e9c411dc0fffcedf2
Autor:
S. B. Berezhnoy, G. V. Kurapov
Publikováno v:
Advanced Engineering Research, Vol 21, Iss 1, Pp 82-88 (2021)
Introduction. The power analysis of a chain transmission with a toothed chain and involute sprockets considers the centrifugal forces and the friction coefficients between the plate and the sprocket tooth. The work objectives are to determine all mes
Externí odkaz:
https://doaj.org/article/4852432dfd894595bb355e9cba4b9f5a
Publikováno v:
E3S Web of Conferences, Vol 383, p 04019 (2023)
This article deals with the calculation of friction and wear of working surfaces of sliding friction units on the basis of energy theory. Working surfaces have roughness, i.e., protrusions and depressions, which under the influence of load and as a r
Externí odkaz:
https://doaj.org/article/565d11327d564c9b8066bb56ed367d6e
Publikováno v:
Materials & Design, Vol 212, Iss , Pp 110207- (2021)
Accurate and quantitative evaluation of friction is of fundamental interest for materials science and manufacturing. Driven by the trend towards miniaturization, micro metal forming techniques with characteristic forming dimensions approaching a few
Externí odkaz:
https://doaj.org/article/8fd997b166ea4253a5cd7a74da891176
Autor:
Mehmet Çalışkan
Publikováno v:
Crystals, Vol 12, Iss 9, p 1254 (2022)
Conventional bearing systems and materials, which are important components of machine elements, have often failed to fulfil requirements, especially in places where sealing is required. In such cases, sliding bearings with PTFE- and NBR-based polymer
Externí odkaz:
https://doaj.org/article/e4ae73a4ce394cb8970e54a3a2c004fd
Publikováno v:
Materials, Vol 15, Iss 10, p 3636 (2022)
Many studies are being carried out on the particles released during the implantoplasty process in the machining of dental implants to remove bacterial biofilms. However, there are no studies on the release of particles produced by the insertion of bo
Externí odkaz:
https://doaj.org/article/041d0ef90e8949e4bf41e0256b0ece77
Akademický článek
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