Notes regarding the supply and drain pressure effects on a squeeze film damper
Squeeze film dampers (SFD) are perhaps the most efficient devices that, can be used nowadays to control the shafts in airworthy turbo-compressors. Various other devices can be successfully used in land-based rotating machinery; however, due to space and weight constraints they can not be used for th...
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| Format: | Article |
| Language: | English |
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National Institute for Aerospace Research “Elie Carafoli” - INCAS
2018-12-01
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| Series: | INCAS Bulletin |
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| Online Access: | http://bulletin.incas.ro/files/moraru__vol_10_iss_4.pdf |
| Summary: | Squeeze film dampers (SFD) are perhaps the most efficient devices that, can be used nowadays to control the shafts in airworthy turbo-compressors. Various other devices can be successfully used in land-based rotating machinery; however, due to space and weight constraints they can not be used for the lateral vibrations control in on-board ball bearings supported turbines. SFDs are basically thin oil films (surrounding the ball bearing housings), that provide the stiffness and damping required for adequate shaft behavior in conjunctions with various elastic elements and anti-rotational devices Fluid films in SFDs are strongly influenced by the oil supply and drain pressures. Some aspects regarding the effects of the supply and drain pressures on a SFD are discussed below. |
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| ISSN: | 2066-8201 2247-4528 |