A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications
Numerical investigations of capped T-ring (CTR) seals performance in reciprocating motion for landing gear shock absorber applications are presented. A lubrication model using the Elastohydrodynamic lubrication theory and deformation mechanics is developed in a multi-material contact zone, and a pro...
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| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/9/12/271 |
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| author | Aaron Feria Alanis Ahmed A. Sheikh Al-Shabab Antonis F. Antoniadis Panagiotis Tsoutsanis Martin Skote |
| author_facet | Aaron Feria Alanis Ahmed A. Sheikh Al-Shabab Antonis F. Antoniadis Panagiotis Tsoutsanis Martin Skote |
| author_sort | Aaron Feria Alanis |
| collection | DOAJ |
| description | Numerical investigations of capped T-ring (CTR) seals performance in reciprocating motion for landing gear shock absorber applications are presented. A lubrication model using the Elastohydrodynamic lubrication theory and deformation mechanics is developed in a multi-material contact zone, and a procedure for coupling fluid and deformation mechanics is introduced. By conducting Finite Element Method (FEM) simulations, the static contact pressure is obtained, which subsequently is used within the model developed herein consisting of a modified Reynolds equation and an asperity contact model, to calculate the fluid film pressure, and the deformation of the fluid channel is determined using an elastic deformation model applied to a multi-component multi-mechanical property channel. These computational results are used for estimations of the seal leakage and friction under various conditions. In addition, the influence of asperity orientation is compared with other parameters, such as sealing pressure and piston velocity. A correlation between asperity orientation and leakage was found, and a general trend of reduced leakage with longitudinally oriented asperities was established. |
| format | Article |
| id | doaj-art-3ad8dddefd92470d93bb248edaa1bcd5 |
| institution | DOAJ |
| issn | 2311-5521 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj-art-3ad8dddefd92470d93bb248edaa1bcd52025-08-20T02:56:06ZengMDPI AGFluids2311-55212024-11-0191227110.3390/fluids9120271A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber ApplicationsAaron Feria Alanis0Ahmed A. Sheikh Al-Shabab1Antonis F. Antoniadis2Panagiotis Tsoutsanis3Martin Skote4Faculty of Engineering and Applied Sciences, Cranfield University, Cranfield MK43 0AL, UKFaculty of Engineering and Applied Sciences, Cranfield University, Cranfield MK43 0AL, UKFaculty of Engineering and Applied Sciences, Cranfield University, Cranfield MK43 0AL, UKFaculty of Engineering and Applied Sciences, Cranfield University, Cranfield MK43 0AL, UKFaculty of Engineering and Applied Sciences, Cranfield University, Cranfield MK43 0AL, UKNumerical investigations of capped T-ring (CTR) seals performance in reciprocating motion for landing gear shock absorber applications are presented. A lubrication model using the Elastohydrodynamic lubrication theory and deformation mechanics is developed in a multi-material contact zone, and a procedure for coupling fluid and deformation mechanics is introduced. By conducting Finite Element Method (FEM) simulations, the static contact pressure is obtained, which subsequently is used within the model developed herein consisting of a modified Reynolds equation and an asperity contact model, to calculate the fluid film pressure, and the deformation of the fluid channel is determined using an elastic deformation model applied to a multi-component multi-mechanical property channel. These computational results are used for estimations of the seal leakage and friction under various conditions. In addition, the influence of asperity orientation is compared with other parameters, such as sealing pressure and piston velocity. A correlation between asperity orientation and leakage was found, and a general trend of reduced leakage with longitudinally oriented asperities was established.https://www.mdpi.com/2311-5521/9/12/271mixed-elastohydrodynamic lubricationcapped T-ring sealreciprocating seallanding gears |
| spellingShingle | Aaron Feria Alanis Ahmed A. Sheikh Al-Shabab Antonis F. Antoniadis Panagiotis Tsoutsanis Martin Skote A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications Fluids mixed-elastohydrodynamic lubrication capped T-ring seal reciprocating seal landing gears |
| title | A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications |
| title_full | A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications |
| title_fullStr | A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications |
| title_full_unstemmed | A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications |
| title_short | A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-Ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications |
| title_sort | mixed elastohydrodynamic lubrication model of a capped t ring seal with a sectioned multi material film thickness in landing gear shock absorber applications |
| topic | mixed-elastohydrodynamic lubrication capped T-ring seal reciprocating seal landing gears |
| url | https://www.mdpi.com/2311-5521/9/12/271 |
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