Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations
Multi-leaf journal foil bearing (MLJFB) is well known for its applications in the air cycle machines (ACMs) of airplanes. However, its frictional energy dissipation mechanism of overlapped foils has not been theoretically studied and is still not clear to researchers. This paper models the frictiona...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/10/10/261 |
| _version_ | 1797406981521145856 |
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| author | Changlin Li Jianjun Du Jie Li Zhenni Xu |
| author_facet | Changlin Li Jianjun Du Jie Li Zhenni Xu |
| author_sort | Changlin Li |
| collection | DOAJ |
| description | Multi-leaf journal foil bearing (MLJFB) is well known for its applications in the air cycle machines (ACMs) of airplanes. However, its frictional energy dissipation mechanism of overlapped foils has not been theoretically studied and is still not clear to researchers. This paper models the frictional sliding/sticking behaviors between adjacent foil leaves based on the tangent gap, applying the penalty method of contact mechanics. Large foil deformations are calculated to simulate the processes of foil assembly and rotor insertion using nonlinear curve beam elements. Predictions of the frictional hysteresis characteristics of MLJFB are obtained, influenced by foil boundary conditions, leaf number, bearing radial clearance and other foil structural parameters, which correlate well with the test results. This study lays solid theoretical foundations for the static and dynamic research of MLJFB. |
| first_indexed | 2024-03-09T03:34:39Z |
| format | Article |
| id | doaj.art-808154576f1e404ebccca02c90ed5cb6 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-09T03:34:39Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-808154576f1e404ebccca02c90ed5cb62023-12-03T14:50:18ZengMDPI AGLubricants2075-44422022-10-01101026110.3390/lubricants10100261Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and ValidationsChanglin Li0Jianjun Du1Jie Li2Zhenni Xu3School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaSchool of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, ChinaMulti-leaf journal foil bearing (MLJFB) is well known for its applications in the air cycle machines (ACMs) of airplanes. However, its frictional energy dissipation mechanism of overlapped foils has not been theoretically studied and is still not clear to researchers. This paper models the frictional sliding/sticking behaviors between adjacent foil leaves based on the tangent gap, applying the penalty method of contact mechanics. Large foil deformations are calculated to simulate the processes of foil assembly and rotor insertion using nonlinear curve beam elements. Predictions of the frictional hysteresis characteristics of MLJFB are obtained, influenced by foil boundary conditions, leaf number, bearing radial clearance and other foil structural parameters, which correlate well with the test results. This study lays solid theoretical foundations for the static and dynamic research of MLJFB.https://www.mdpi.com/2075-4442/10/10/261multi-leaf foil bearingcoulomb frictioncontact mechanicsnonlinear foil deformation |
| spellingShingle | Changlin Li Jianjun Du Jie Li Zhenni Xu Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations Lubricants multi-leaf foil bearing coulomb friction contact mechanics nonlinear foil deformation |
| title | Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations |
| title_full | Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations |
| title_fullStr | Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations |
| title_full_unstemmed | Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations |
| title_short | Investigations on the Frictional Hysteresis Effect of Multi-Leaf Journal Foil Bearing: Modeling, Predictions and Validations |
| title_sort | investigations on the frictional hysteresis effect of multi leaf journal foil bearing modeling predictions and validations |
| topic | multi-leaf foil bearing coulomb friction contact mechanics nonlinear foil deformation |
| url | https://www.mdpi.com/2075-4442/10/10/261 |
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