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Examination of stick-slip scenario on lubricated spring-brake systems | ||
| Published in: | Industry, Innovation, and Infrastructure for Sustainable Cities and Communities: Proceedings of the 17th LACCEI International Multi-Conference for Engineering, Education and Technology |  |
| Date of Conference: | July 24-26, 2019 | |
| Location of Conference: | Montego Bay, Jamaica | |
| Authors: | Ilaria Ghezzi (Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-6962, FR) Davide Tonazzi (University of Rome, IT) Michael Rovere (Somfy, R&D Center, FR) Cedric Le Coeur (Somfy, R&D Center, FR) Gilles Pradel (Somfy, R&D Center, FR) Yves Berthier (Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-6962, FR) Francesco Massi (University of Rome, FR) (Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-6962) | |
| Full Paper: | #484 | |
Abstract:Several complex mechanisms can be responsible for undesirable friction-induced vibrations in many mechanical systems. This paper presents a tribological and dynamic analysis of the stick-slip problem, under greased lubrication, taking into account the practical application of a spring-brake system used in electric tubular motors. The main functioning of these brakes is based on the frictional greased contact between a stationary cylinder and a torsional spring, which rotates inside it. The identification of the parameters that most affect the stick-slip appearance in greased contacts requires a complete understanding and appropriate analysis of the entire system, to identify the effects of all physical parameters on the system. Here the global dynamics and the local contact behaviour is analysed, providing an in-depth examination of the stick-slip phenomenon on a greased contact. | ||