A new concept of active hydrodynamic bearing for a... - BV FAPESP
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A new concept of active hydrodynamic bearing for application in rotating systems

Texto completo
Autor(es):
Ramos, D. J. [1] ; Daniel, G. B. [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Mech Engn, Dept Integrated Syst, Mendeleyev St 200, Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: TRIBOLOGY INTERNATIONAL; v. 153, JAN 2021.
Citações Web of Science: 2
Resumo

Conventional hydrodynamic journal bearings applied to rotating machines are susceptible to some undesired conditions, such as fluid-induced instability, high increase of temperature and load capacity inefficiency. To avoid these conditions, a new concept of hydrodynamic bearing is proposed in which the own bearing motion is considered, thus making possible to change the average velocity of the lubricating oil film inside the bearing. The rotor dynamic behavior as well as the hydrodynamic forces developed in the bearings are initially evaluated through computational simulation, allowing to verify the advantages and improvements obtained through this new bearing concept. The numerical results show that this new bearing is able to avoid fluid-induce instability in the rotating system, in addition to acting on reducing the oil temperature and bearing load capacity. Based on these results, the new concept of bearing represents a promising alternative to improve the performance of rotating machines. (AU)

Processo FAPESP: 18/11298-4 - Desenvolvimento de um mancal hidrodinâmico ativo para aplicação em sistemas rotativos
Beneficiário:Douglas Jhon Ramos
Modalidade de apoio: Bolsas no Brasil - Doutorado
Processo FAPESP: 15/20363-6 - Identificação e controle tolerantes a falhas em sistemas rotativos
Beneficiário:Katia Lucchesi Cavalca Dedini
Modalidade de apoio: Auxílio à Pesquisa - Temático