A Study of the Stability of an Externally-Pressurized Gas-Lubricated Thrust Bearing With a Flexible Damped SupportSource: Journal of Tribology:;1978:;volume( 100 ):;issue: 003::page 364Author:D. A. Boffey
DOI: 10.1115/1.3453186Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Externally-pressurized gas bearings are prone to a dynamic instability known as pneumatic hammer. This paper examines the possibility of using a flexible damped bearing support to suppress the instability. A circular thrust bearing having a central feed hole and pocket is employed in the feasibility study. The linearized gas film dynamic coefficients are derived using an adaptation of an existing solution to Reynolds equation for a long rectangular bearing. Only stability of the equilibrium position is considered. Results obtained for a support having a stiffness comparable to the stiffness of the gas film show that damping in the support can substantially improve stability.
keyword(s): Stability , Thrust bearings , Stiffness , Bearings , Damping , Equations , Gas bearings , Hammers AND Equilibrium (Physics) ,
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| contributor author | D. A. Boffey | |
| date accessioned | 2017-05-08T23:05:43Z | |
| date available | 2017-05-08T23:05:43Z | |
| date copyright | July, 1978 | |
| date issued | 1978 | |
| identifier issn | 0742-4787 | |
| identifier other | JOTRE9-28618#364_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/91561 | |
| description abstract | Externally-pressurized gas bearings are prone to a dynamic instability known as pneumatic hammer. This paper examines the possibility of using a flexible damped bearing support to suppress the instability. A circular thrust bearing having a central feed hole and pocket is employed in the feasibility study. The linearized gas film dynamic coefficients are derived using an adaptation of an existing solution to Reynolds equation for a long rectangular bearing. Only stability of the equilibrium position is considered. Results obtained for a support having a stiffness comparable to the stiffness of the gas film show that damping in the support can substantially improve stability. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Study of the Stability of an Externally-Pressurized Gas-Lubricated Thrust Bearing With a Flexible Damped Support | |
| type | Journal Paper | |
| journal volume | 100 | |
| journal issue | 3 | |
| journal title | Journal of Tribology | |
| identifier doi | 10.1115/1.3453186 | |
| journal fristpage | 364 | |
| journal lastpage | 368 | |
| identifier eissn | 1528-8897 | |
| keywords | Stability | |
| keywords | Thrust bearings | |
| keywords | Stiffness | |
| keywords | Bearings | |
| keywords | Damping | |
| keywords | Equations | |
| keywords | Gas bearings | |
| keywords | Hammers AND Equilibrium (Physics) | |
| tree | Journal of Tribology:;1978:;volume( 100 ):;issue: 003 | |
| contenttype | Fulltext |