| contributor author | Tiesheng Zheng | |
| contributor author | Shuhua Yang | |
| contributor author | Zhonghui Xiao | |
| contributor author | Wen Zhang | |
| date accessioned | 2017-05-09T00:12:09Z | |
| date available | 2017-05-09T00:12:09Z | |
| date copyright | March, 2004 | |
| date issued | 2004 | |
| identifier issn | 0021-8936 | |
| identifier other | JAMCAV-26575#219_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/129515 | |
| description abstract | Based on the free boundary theory and variational method, this paper presents a Ritz method to compute the instantaneous hydrodynamic forces of a real bearing subject to any perturbed motions of the rotor. The given method manipulates the cavitation region by simply introducing a parameter to match the free boundary condition and, as a result, a very simple approximate formula of oil-film pressure were obtained leading to great saving of computing time. The numerical examples show the high accuracy of the proposed formulas. This oil-film force model is also used to analyze the nonlinear dynamics of a rigid unbalanced rotor with elliptical bearing support. The results well agree with those of the oil-film force model computed by the finite element method and the computing time is saved greatly. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Ritz Model of Unsteady Oil-Film Forces for Nonlinear Dynamic Rotor-Bearing System | |
| type | Journal Paper | |
| journal volume | 71 | |
| journal issue | 2 | |
| journal title | Journal of Applied Mechanics | |
| identifier doi | 10.1115/1.1640369 | |
| journal fristpage | 219 | |
| journal lastpage | 224 | |
| identifier eissn | 1528-9036 | |
| keywords | Force | |
| keywords | Bearings | |
| keywords | Rotors | |
| keywords | Pressure | |
| keywords | Formulas AND Finite element methods | |
| tree | Journal of Applied Mechanics:;2004:;volume( 071 ):;issue: 002 | |
| contenttype | Fulltext | |