The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study
The paper proposes the study of dry friction by means of a short eccentric rotor. The rotor was designed and realised in the laboratory. In an ideal frictionless situation, a rotor actuated by gravity will have an angular velocity which increases indefinitely. The analytical model assumes dry fricti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/11/8/340 |
| _version_ | 1797584005495783424 |
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| author | Stelian Alaci Ilie Musca Carmen Bujoreanu Ionut-Cristian Romanu Nicolae-Adrian Nitu Florina-Carmen Ciornei |
| author_facet | Stelian Alaci Ilie Musca Carmen Bujoreanu Ionut-Cristian Romanu Nicolae-Adrian Nitu Florina-Carmen Ciornei |
| author_sort | Stelian Alaci |
| collection | DOAJ |
| description | The paper proposes the study of dry friction by means of a short eccentric rotor. The rotor was designed and realised in the laboratory. In an ideal frictionless situation, a rotor actuated by gravity will have an angular velocity which increases indefinitely. The analytical model assumes dry friction in the bushing of the rotor and the main result reveals that the angular velocity either stabilizes around a certain value or drops to zero. Two situations of friction were considered for the theoretical model: first only dynamic friction and secondly, both static and dynamic friction are present. The analytical model of the dynamics of the rotor presents the advantage that it can be applied for diverse friction cases, from dry friction to complex dry friction and wet friction. Experimental tests were carried out on the designed and constructed device; they are in very good agreement with the results of the theoretical model. |
| first_indexed | 2024-03-10T23:47:06Z |
| format | Article |
| id | doaj.art-008de8e8293946a3922e4b2e2bacdf18 |
| institution | Directory Open Access Journal |
| issn | 2075-4442 |
| language | English |
| last_indexed | 2024-03-10T23:47:06Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj.art-008de8e8293946a3922e4b2e2bacdf182023-11-19T01:56:10ZengMDPI AGLubricants2075-44422023-08-0111834010.3390/lubricants11080340The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental StudyStelian Alaci0Ilie Musca1Carmen Bujoreanu2Ionut-Cristian Romanu3Nicolae-Adrian Nitu4Florina-Carmen Ciornei5Mechanics and Technologies Department, Stefan cel Mare University of Suceava, 720229 Suceava, RomaniaMechanics and Technologies Department, Stefan cel Mare University of Suceava, 720229 Suceava, RomaniaMechanical Engineering, Mechatronics and Robotics Department, “Gheorghe Asachi” Technical University, 700050 Iasi, RomaniaMechanics and Technologies Department, Stefan cel Mare University of Suceava, 720229 Suceava, RomaniaMechanical Engineering, Mechatronics and Robotics Department, “Gheorghe Asachi” Technical University, 700050 Iasi, RomaniaMechanics and Technologies Department, Stefan cel Mare University of Suceava, 720229 Suceava, RomaniaThe paper proposes the study of dry friction by means of a short eccentric rotor. The rotor was designed and realised in the laboratory. In an ideal frictionless situation, a rotor actuated by gravity will have an angular velocity which increases indefinitely. The analytical model assumes dry friction in the bushing of the rotor and the main result reveals that the angular velocity either stabilizes around a certain value or drops to zero. Two situations of friction were considered for the theoretical model: first only dynamic friction and secondly, both static and dynamic friction are present. The analytical model of the dynamics of the rotor presents the advantage that it can be applied for diverse friction cases, from dry friction to complex dry friction and wet friction. Experimental tests were carried out on the designed and constructed device; they are in very good agreement with the results of the theoretical model.https://www.mdpi.com/2075-4442/11/8/340dry frictionstatic coefficient of frictiondynamic coefficient of frictionnonlinear dynamical systemshort eccentric rotor |
| spellingShingle | Stelian Alaci Ilie Musca Carmen Bujoreanu Ionut-Cristian Romanu Nicolae-Adrian Nitu Florina-Carmen Ciornei The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study Lubricants dry friction static coefficient of friction dynamic coefficient of friction nonlinear dynamical system short eccentric rotor |
| title | The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study |
| title_full | The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study |
| title_fullStr | The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study |
| title_full_unstemmed | The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study |
| title_short | The Effect of Dry Friction upon the Dynamics of a Short Eccentric Rotor: An Analytical and Experimental Study |
| title_sort | effect of dry friction upon the dynamics of a short eccentric rotor an analytical and experimental study |
| topic | dry friction static coefficient of friction dynamic coefficient of friction nonlinear dynamical system short eccentric rotor |
| url | https://www.mdpi.com/2075-4442/11/8/340 |
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