Foil bearing (original) (raw)
A foil bearing, also known as a foil-air bearing, is a type of air bearing. A shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that no contact occurs. The shaft and foil are separated by the air's high pressure, which is generated by the rotation that pulls gas into the bearing via viscosity effects. The high speed of the shaft with respect to the foil is required to initiate the air gap, and once this has been achieved, no wear occurs. Unlike aerostatic or hydrostatic bearings, foil bearings require no external pressurisation system for the working fluid, so the hydrodynamic bearing is self-starting.
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| dbo:abstract | A foil bearing, also known as a foil-air bearing, is a type of air bearing. A shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that no contact occurs. The shaft and foil are separated by the air's high pressure, which is generated by the rotation that pulls gas into the bearing via viscosity effects. The high speed of the shaft with respect to the foil is required to initiate the air gap, and once this has been achieved, no wear occurs. Unlike aerostatic or hydrostatic bearings, foil bearings require no external pressurisation system for the working fluid, so the hydrodynamic bearing is self-starting. (en) Los cojinetes de lámina, también denominados cojinetes de lámina-aire, se caracterizan porque el eje es sostenido mediante una lámina de metal soportada por un fleje elástico. Una vez que el eje se encuentra rotando a una velocidad elevada, el fluido presente (por lo general aire) empuja a la lámina alejándola del eje de forma que ya no exista contacto. El eje y la lámina se encuentran separados por la alta presión de aire que es producida por la rotación que gracias a efectos viscosos succiona al aire hacia el cojinete. Es preciso una alta velocidad de giro del eje respecto a la lámina para que se produzca el huelgo de aire, y una vez que el mismo se ha establecido, ya no puede producirse desgaste. A diferencia de los cojinetes hidrostáticos o aerostáticos, los cojinetes de lámina no requieren de un sistema de presurización externo. (es) 空気軸受（くうきじくうけ）は流体軸受の一種で、作動流体に空気を用いたすべり軸受。軸（ジャーナル）と受け部（スリーブ）との間の空気圧によって荷重を支持する。 圧力の発生方法によって動圧型と静圧型とに大きく分けられる。作動流体が空気であるため、と比べ摩擦損失が少なく、運転可能温度範囲が広い。給廃油（潤滑）装置が不要なため保守が容易で、小型化もしやすい。しかしながら、低負荷容量・低剛性・低減衰性という欠点があり、さまざまな軸受構造が提案されている。 (ja) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Foilbearing.jpg?width=300 |
| dbo:wikiPageExternalLink | http://www.mohawkinnovative.com/products/compliant-foil-bearings/ https://oilfreemachinery.com/bearing-tech http://www.nasa.gov/centers/glenn/about/fs14grc.html http://www.rddynamics.com https://web.archive.org/web/20080726082137/http:/ubisa.kist.re.kr/Teams/ubisa/afb.htm https://web.archive.org/web/20090413134503/http:/www.grc.nasa.gov/WWW/StructuresMaterials/TribMech/ https://web.archive.org/web/20100707181721/http:/www.cerom.lsu.edu/projects_foil.htm https://web.archive.org/web/20110720055621/http:/rotorlab.tamu.edu/Tribgroup/ http://www.uta.edu/mae/turboenergy/research.html |
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| rdfs:comment | A foil bearing, also known as a foil-air bearing, is a type of air bearing. A shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that no contact occurs. The shaft and foil are separated by the air's high pressure, which is generated by the rotation that pulls gas into the bearing via viscosity effects. The high speed of the shaft with respect to the foil is required to initiate the air gap, and once this has been achieved, no wear occurs. Unlike aerostatic or hydrostatic bearings, foil bearings require no external pressurisation system for the working fluid, so the hydrodynamic bearing is self-starting. (en) 空気軸受（くうきじくうけ）は流体軸受の一種で、作動流体に空気を用いたすべり軸受。軸（ジャーナル）と受け部（スリーブ）との間の空気圧によって荷重を支持する。 圧力の発生方法によって動圧型と静圧型とに大きく分けられる。作動流体が空気であるため、と比べ摩擦損失が少なく、運転可能温度範囲が広い。給廃油（潤滑）装置が不要なため保守が容易で、小型化もしやすい。しかしながら、低負荷容量・低剛性・低減衰性という欠点があり、さまざまな軸受構造が提案されている。 (ja) Los cojinetes de lámina, también denominados cojinetes de lámina-aire, se caracterizan porque el eje es sostenido mediante una lámina de metal soportada por un fleje elástico. Una vez que el eje se encuentra rotando a una velocidad elevada, el fluido presente (por lo general aire) empuja a la lámina alejándola del eje de forma que ya no exista contacto. El eje y la lámina se encuentran separados por la alta presión de aire que es producida por la rotación que gracias a efectos viscosos succiona al aire hacia el cojinete. Es preciso una alta velocidad de giro del eje respecto a la lámina para que se produzca el huelgo de aire, y una vez que el mismo se ha establecido, ya no puede producirse desgaste. A diferencia de los cojinetes hidrostáticos o aerostáticos, los cojinetes de lámina no requ (es) |
| rdfs:label | Cojinete de lámina (es) Foil bearing (en) 空気軸受 (ja) |
| owl:sameAs | freebase:Foil bearing wikidata:Foil bearing dbpedia-da:Foil bearing dbpedia-es:Foil bearing dbpedia-ja:Foil bearing dbpedia-sl:Foil bearing https://global.dbpedia.org/id/4k63E |
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