Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model
Motorcycles under heavy braking conditions can experience a self-excited oscillation known as ‘chatter’. A simplified three degrees of freedom model of the rear of a motorcycle is developed to study the stability of this mode with the inclusion of lateral dynamics introduced by roll angle. Since mot...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Shahid Chamran University of Ahvaz
2023-04-01
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| Series: | Journal of Applied and Computational Mechanics |
| Subjects: | |
| Online Access: | https://jacm.scu.ac.ir/article_17795_a31cd1ccc0db2fdf6f7c2a91dad27cab.pdf |
| _version_ | 1811172954091814912 |
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| author | Alexander Schramm Luca Leonelli Silvio Sorrentino |
| author_facet | Alexander Schramm Luca Leonelli Silvio Sorrentino |
| author_sort | Alexander Schramm |
| collection | DOAJ |
| description | Motorcycles under heavy braking conditions can experience a self-excited oscillation known as ‘chatter’. A simplified three degrees of freedom model of the rear of a motorcycle is developed to study the stability of this mode with the inclusion of lateral dynamics introduced by roll angle. Since motorcycles achieve high roll angles during operation, the study of chatter during these manoeuvres is a topic of interest. The equations of motion are linearised about a quasistatic equilibrium and simplified to accommodate symbolic inspection. Power analysis, eigensystem analysis, eigenvalue sensitivity and Routh-Hurwitz stability criterion are used to study the stability of the system in the braking region. It was found that a driveline mode can become unstable at about 19 Hz, and that its tendency towards instability is increased with added roll angle. This mode is sensitive to model parameters affecting the system inertia and stiffness, as well as the chain geometry. Finally, it is found that the lateral dynamics and roll angle play no direct role in chatter but have a significant indirect effect on it through the working point of the force characteristic function of the tyre. |
| first_indexed | 2024-04-10T17:40:13Z |
| format | Article |
| id | doaj.art-a13b85367d614d0a90e14c6aa8a03a89 |
| institution | Directory Open Access Journal |
| issn | 2383-4536 |
| language | English |
| last_indexed | 2024-04-10T17:40:13Z |
| publishDate | 2023-04-01 |
| publisher | Shahid Chamran University of Ahvaz |
| record_format | Article |
| series | Journal of Applied and Computational Mechanics |
| spelling | doaj.art-a13b85367d614d0a90e14c6aa8a03a892023-02-03T15:42:04ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362023-04-019240441810.22055/jacm.2022.41157.370917795Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal ModelAlexander Schramm0Luca Leonelli1Silvio Sorrentino2Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, Via Vivarelli 10, Modena, 41125, ItalyDepartment of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, Via Vivarelli 10, Modena, 41125, ItalyDepartment of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, Via Vivarelli 10, Modena, 41125, ItalyMotorcycles under heavy braking conditions can experience a self-excited oscillation known as ‘chatter’. A simplified three degrees of freedom model of the rear of a motorcycle is developed to study the stability of this mode with the inclusion of lateral dynamics introduced by roll angle. Since motorcycles achieve high roll angles during operation, the study of chatter during these manoeuvres is a topic of interest. The equations of motion are linearised about a quasistatic equilibrium and simplified to accommodate symbolic inspection. Power analysis, eigensystem analysis, eigenvalue sensitivity and Routh-Hurwitz stability criterion are used to study the stability of the system in the braking region. It was found that a driveline mode can become unstable at about 19 Hz, and that its tendency towards instability is increased with added roll angle. This mode is sensitive to model parameters affecting the system inertia and stiffness, as well as the chain geometry. Finally, it is found that the lateral dynamics and roll angle play no direct role in chatter but have a significant indirect effect on it through the working point of the force characteristic function of the tyre.https://jacm.scu.ac.ir/article_17795_a31cd1ccc0db2fdf6f7c2a91dad27cab.pdfmotorcycle dynamicsstabilitychatterdrivelineroll angle |
| spellingShingle | Alexander Schramm Luca Leonelli Silvio Sorrentino Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model Journal of Applied and Computational Mechanics motorcycle dynamics stability chatter driveline roll angle |
| title | Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model |
| title_full | Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model |
| title_fullStr | Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model |
| title_full_unstemmed | Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model |
| title_short | Driveline Stability in Racing Motorcycles: Analysis of a Three Degrees of Freedom Minimal Model |
| title_sort | driveline stability in racing motorcycles analysis of a three degrees of freedom minimal model |
| topic | motorcycle dynamics stability chatter driveline roll angle |
| url | https://jacm.scu.ac.ir/article_17795_a31cd1ccc0db2fdf6f7c2a91dad27cab.pdf |
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