Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Osami MATSUSHITA"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 885, Pp 18-00460-18-00460 (2020)
Oil film bearings are often used in large rotating machinery because they have large load capacity and damping coefficients. They, however, generate fluid forces and cause unstable vibrations such as oil whirl and oil whip at high rotational speed. B
Externí odkaz:
https://doaj.org/article/ffa0a94aa0ca4085a2e34bb746dec527
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 879, Pp 18-00500-18-00500 (2019)
Selected from various Eigen modes of blading, nodal diameter κ= 0 and κ= 1 are both related to shaft torsional and/or axial vibration and shaft bending vibrations respectively. In order to avoid the possibility of 2f (f=power system frequency) from
Externí odkaz:
https://doaj.org/article/0cc852d82aab4b0aaccbac70b58f2023
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 85, Iss 876, Pp 19-00018-19-00018 (2019)
Because horizontal multi-stage pumps have journal bearings and a balancing piston with narrow gap, it is needed to prevent self-excited vibrations caused by fluid forces in these gaps. For the rotor system, because it is challenging to find the stabi
Externí odkaz:
https://doaj.org/article/1f7464a6fb0042b185cbb28b64b9d975
Publikováno v:
Mechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00481-18-00481 (2019)
These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the nu
Externí odkaz:
https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e63
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 866, Pp 17-00298-17-00298 (2018)
Selected from various eigenmodes of blading, nodal diameter κ= 0 and κ= 1 are both related to shaft torsional and/or axial vibration and shaft bending vibrations respectively. In order to avoid the possibility of 2f (f=power system frequency) from
Externí odkaz:
https://doaj.org/article/f5bad3840e604a32ac88d2e62c0af9ae
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 82, Iss 834, Pp 15-00500-15-00500 (2016)
Oil film bearings are applied for large rotational machineries owing to their large load capacity and damping effect. However, a swirling flow of the lubricant induces self-excitation at high rotational speed. The stability margin changes during many
Externí odkaz:
https://doaj.org/article/d05a35cfc6374dd898b9edb0a3914352
Experimental study of coupled shaft bending - blade umbrella mode vibration of a turbine rotor model
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 80, Iss 812, Pp TRANS0077-TRANS0077 (2014)
This paper describes an experimental study on the characteristics of blade-shaft coupled bending vibration of a rotor system with a bladed disk. In a rotor with relatively long blades such as low-pressure steam turbines, the coupled vibration of shaf
Externí odkaz:
https://doaj.org/article/38266d2bd39640e3959c2a7f236be6e0
Publikováno v:
International Journal of Rotating Machinery, Vol 6, Iss 1, Pp 67-78 (2000)
The main part of turbo machinery is conventionally supported by oil film lubricated bearings. The rotor vibrations can be suppressed within low levels as to satisfy vibration criteria, e.g., ISO standards for general rotors and API 617 for process co
Externí odkaz:
https://doaj.org/article/54e86d50066c46a68e1d39253205b863
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 235:4273-4282
A flexible bearing support structure is effective for stabilizing the self-excited vibration of a bearing, such as oil whirl. The stabilization effect is increased if the structure has static tangential stiffness, where the reaction force is perpendi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2489153a88d14e2d9872d02d4e9988b5
https://doi.org/10.1177/0954406220967965
https://doi.org/10.1177/0954406220967965
Publikováno v:
The Proceedings of the Dynamics & Design Conference. 2022:601
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d784d45dd68817728e587c460e7f92f7
https://doi.org/10.1299/jsmedmc.2022.601
https://doi.org/10.1299/jsmedmc.2022.601