Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up
The next few years will be marked by major changes in the mobility sector in order to come closer to CO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></ms...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-06-01
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| Series: | Machines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-1702/10/6/447 |
| _version_ | 1797485055743885312 |
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| author | Hannes Schmiedeke Jan-Hinrich Sick Michael Sinapius |
| author_facet | Hannes Schmiedeke Jan-Hinrich Sick Michael Sinapius |
| author_sort | Hannes Schmiedeke |
| collection | DOAJ |
| description | The next few years will be marked by major changes in the mobility sector in order to come closer to CO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> neutrality. Especially in the commercial vehicle sector, fuel cells can make an important contribution. In order to achieve this, the efficiency of all subcomponents of a vehicle has to be improved. This also includes the bearings in the electrical air compressors. The frequent start–stop cycles are critical, as they can lead to higher wear and thus a shorter service life. One solution is a prototype that can actively switch between a triangular profile and a round bearing shape. In this work, the two switching states are investigated experimentally. Instead of the thin bearing sleeve of the prototype, rigid sleeves are used for each switching shape. This allows the shape itself to be studied without the contribution of the stiffness of the thin bearing sleeve along with the actuators. The examination includes static load tests and run-out tests in the range of the lift-off speed. Alongside this, the difficulties of the bearing production and the improvement of the test rig used are pointed out. |
| first_indexed | 2024-03-09T23:13:22Z |
| format | Article |
| id | doaj.art-0e93f44ee9604014997c9fd4cdb75765 |
| institution | Directory Open Access Journal |
| issn | 2075-1702 |
| language | English |
| last_indexed | 2024-03-09T23:13:22Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Machines |
| spelling | doaj.art-0e93f44ee9604014997c9fd4cdb757652023-11-23T17:39:15ZengMDPI AGMachines2075-17022022-06-0110644710.3390/machines10060447Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-UpHannes Schmiedeke0Jan-Hinrich Sick1Michael Sinapius2Institute of Mechanics and Adaptronics, TU Braunschweig, 38106 Braunschweig, GermanySBS Sondermaschinen GmbH, 38104 Braunschweig, GermanyInstitute of Mechanics and Adaptronics, TU Braunschweig, 38106 Braunschweig, GermanyThe next few years will be marked by major changes in the mobility sector in order to come closer to CO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> neutrality. Especially in the commercial vehicle sector, fuel cells can make an important contribution. In order to achieve this, the efficiency of all subcomponents of a vehicle has to be improved. This also includes the bearings in the electrical air compressors. The frequent start–stop cycles are critical, as they can lead to higher wear and thus a shorter service life. One solution is a prototype that can actively switch between a triangular profile and a round bearing shape. In this work, the two switching states are investigated experimentally. Instead of the thin bearing sleeve of the prototype, rigid sleeves are used for each switching shape. This allows the shape itself to be studied without the contribution of the stiffness of the thin bearing sleeve along with the actuators. The examination includes static load tests and run-out tests in the range of the lift-off speed. Alongside this, the difficulties of the bearing production and the improvement of the test rig used are pointed out.https://www.mdpi.com/2075-1702/10/6/447active foil bearingbump-typedrag torquelift-off speedbearing stiffnessfoil manufacturing |
| spellingShingle | Hannes Schmiedeke Jan-Hinrich Sick Michael Sinapius Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up Machines active foil bearing bump-type drag torque lift-off speed bearing stiffness foil manufacturing |
| title | Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up |
| title_full | Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up |
| title_fullStr | Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up |
| title_full_unstemmed | Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up |
| title_short | Experimental Investigation of Two Switching States of an Active Foil Bearing during Start-Up |
| title_sort | experimental investigation of two switching states of an active foil bearing during start up |
| topic | active foil bearing bump-type drag torque lift-off speed bearing stiffness foil manufacturing |
| url | https://www.mdpi.com/2075-1702/10/6/447 |
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