Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings
Tilting pad bearings offer unique dynamic stability enabling successful deployment of high-speed rotating machinery. The model of dynamic stiffness, damping, and added mass coefficients is often used for rotordynamic analyses, and this method does not suffice to describe the dynamic behaviour due to...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2015/531209 |
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| _version_ | 1832566950174130176 |
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| author | Yongliang Wang Yu Gao Ying Cui Zhansheng Liu |
| author_facet | Yongliang Wang Yu Gao Ying Cui Zhansheng Liu |
| author_sort | Yongliang Wang |
| collection | DOAJ |
| description | Tilting pad bearings offer unique dynamic stability enabling successful deployment of high-speed rotating machinery. The model of dynamic stiffness, damping, and added mass coefficients is often used for rotordynamic analyses, and this method does not suffice to describe the dynamic behaviour due to the nonlinear effects of oil film force under larger shaft vibration or vertical rotor conditions. The objective of this paper is to present a nonlinear oil force model for finite length tilting pad journal bearings. An approximate analytic oil film force model was established by analysing the dynamic characteristic of oil film of a single pad journal bearing using variable separation method under the dynamic
π oil film boundary condition. And an oil film force model of a four-tilting-pad journal bearing was established by using the pad assembly technique and considering pad tilting angle. The validity of the model established was proved by analyzing the distribution of oil film pressure and the locus of journal centre for tilting pad journal bearings and by comparing the model established in this paper with the model established using finite difference method. |
| format | Article |
| id | doaj-art-67e06c6f1c424246a7c5cba09214738f |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-67e06c6f1c424246a7c5cba09214738f2025-02-03T01:02:36ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342015-01-01201510.1155/2015/531209531209Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal BearingsYongliang Wang0Yu Gao1Ying Cui2Zhansheng Liu3Marine Engineering College, Dalian Maritime University, Dalian, Liaoning 116026, ChinaMarine Engineering College, Dalian Maritime University, Dalian, Liaoning 116026, ChinaMarine Engineering College, Dalian Maritime University, Dalian, Liaoning 116026, ChinaSchool of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, ChinaTilting pad bearings offer unique dynamic stability enabling successful deployment of high-speed rotating machinery. The model of dynamic stiffness, damping, and added mass coefficients is often used for rotordynamic analyses, and this method does not suffice to describe the dynamic behaviour due to the nonlinear effects of oil film force under larger shaft vibration or vertical rotor conditions. The objective of this paper is to present a nonlinear oil force model for finite length tilting pad journal bearings. An approximate analytic oil film force model was established by analysing the dynamic characteristic of oil film of a single pad journal bearing using variable separation method under the dynamic π oil film boundary condition. And an oil film force model of a four-tilting-pad journal bearing was established by using the pad assembly technique and considering pad tilting angle. The validity of the model established was proved by analyzing the distribution of oil film pressure and the locus of journal centre for tilting pad journal bearings and by comparing the model established in this paper with the model established using finite difference method.http://dx.doi.org/10.1155/2015/531209 |
| spellingShingle | Yongliang Wang Yu Gao Ying Cui Zhansheng Liu Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings International Journal of Rotating Machinery |
| title | Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings |
| title_full | Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings |
| title_fullStr | Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings |
| title_full_unstemmed | Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings |
| title_short | Establishment of Approximate Analytical Model of Oil Film Force for Finite Length Tilting Pad Journal Bearings |
| title_sort | establishment of approximate analytical model of oil film force for finite length tilting pad journal bearings |
| url | http://dx.doi.org/10.1155/2015/531209 |
| work_keys_str_mv | AT yongliangwang establishmentofapproximateanalyticalmodelofoilfilmforceforfinitelengthtiltingpadjournalbearings AT yugao establishmentofapproximateanalyticalmodelofoilfilmforceforfinitelengthtiltingpadjournalbearings AT yingcui establishmentofapproximateanalyticalmodelofoilfilmforceforfinitelengthtiltingpadjournalbearings AT zhanshengliu establishmentofapproximateanalyticalmodelofoilfilmforceforfinitelengthtiltingpadjournalbearings |