Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support
Kinematic and dynamic features of flexible rotor rolling of an unlubricated uneven-stiffness gapped support are shown with the help of a theoretical model and full-scale tests. A combination of original approaches and well-known analytical and experimental methods is used. In particular, the motio...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Samara National Research University
2019-07-01
|
| Series: | Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение |
| Subjects: | |
| Online Access: | https://journals.ssau.ru/index.php/vestnik/article/view/6768 |
| _version_ | 1829520613079777280 |
|---|---|
| author | A. N. Nikiforov G. Ya. Panovko A. Ye. Shokhin |
| author_facet | A. N. Nikiforov G. Ya. Panovko A. Ye. Shokhin |
| author_sort | A. N. Nikiforov |
| collection | DOAJ |
| description | Kinematic and dynamic features of flexible rotor rolling of an unlubricated uneven-stiffness gapped support are shown with the help of a theoretical model and full-scale tests. A combination of original approaches and well-known analytical and experimental methods is used. In particular, the motion equations are Lagrangian, derived in complex and complex-conjugate coordinates, and their solutions are sought in the exponential form, by excluding contact forces from consideration and by introducing a small parameter. Vibration measurements are not made on the rig frame using accelerometers, but at the source of vibration, i.e. by direct tracking of the rotor axle by a pair of eddy-current contactless displacement sensors installed in a XY configuration. Hence, the preciseness of the experimental data does not depend on the mechanical conductivity of the parts between the source rotor and the receiver sensors. As a result, the frequency, amplitude and existence domain of retrograde precession are reliably determined, and a conclusion is drawn that rolling under a certain combination of parameters is impossible in principle. |
| first_indexed | 2024-12-16T15:00:02Z |
| format | Article |
| id | doaj.art-6e486d4a63c14c35b365624d7d4069b0 |
| institution | Directory Open Access Journal |
| issn | 2542-0453 2541-7533 |
| language | English |
| last_indexed | 2024-12-16T15:00:02Z |
| publishDate | 2019-07-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение |
| spelling | doaj.art-6e486d4a63c14c35b365624d7d4069b02022-12-21T22:27:18ZengSamara National Research UniversityВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение2542-04532541-75332019-07-0118215616810.18287/2541-7533-2019-18-2-156-168Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic supportA. N. Nikiforov0G. Ya. Panovko1A. Ye. Shokhin2Mechanical Engineering Research Institute of the Russian Academy of Sciences, Russian FederationMechanical Engineering Research Institute of the Russian Academy of Sciences, Russian FederationMechanical Engineering Research Institute of the Russian Academy of Sciences, Russian FederationKinematic and dynamic features of flexible rotor rolling of an unlubricated uneven-stiffness gapped support are shown with the help of a theoretical model and full-scale tests. A combination of original approaches and well-known analytical and experimental methods is used. In particular, the motion equations are Lagrangian, derived in complex and complex-conjugate coordinates, and their solutions are sought in the exponential form, by excluding contact forces from consideration and by introducing a small parameter. Vibration measurements are not made on the rig frame using accelerometers, but at the source of vibration, i.e. by direct tracking of the rotor axle by a pair of eddy-current contactless displacement sensors installed in a XY configuration. Hence, the preciseness of the experimental data does not depend on the mechanical conductivity of the parts between the source rotor and the receiver sensors. As a result, the frequency, amplitude and existence domain of retrograde precession are reliably determined, and a conclusion is drawn that rolling under a certain combination of parameters is impossible in principle.https://journals.ssau.ru/index.php/vestnik/article/view/6768Anisotropic rotor systemmathematical and experimental modelrollingslippingprecession rate |
| spellingShingle | A. N. Nikiforov G. Ya. Panovko A. Ye. Shokhin Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение Anisotropic rotor system mathematical and experimental model rolling slipping precession rate |
| title | Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| title_full | Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| title_fullStr | Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| title_full_unstemmed | Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| title_short | Experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| title_sort | experimental and theoretical research of continuous motion of rotor on anisotropic gapped elastic support |
| topic | Anisotropic rotor system mathematical and experimental model rolling slipping precession rate |
| url | https://journals.ssau.ru/index.php/vestnik/article/view/6768 |
| work_keys_str_mv | AT annikiforov experimentalandtheoreticalresearchofcontinuousmotionofrotoronanisotropicgappedelasticsupport AT gyapanovko experimentalandtheoreticalresearchofcontinuousmotionofrotoronanisotropicgappedelasticsupport AT ayeshokhin experimentalandtheoreticalresearchofcontinuousmotionofrotoronanisotropicgappedelasticsupport |