The Arts et Métiers teams Arts et Métiers those at the Valeo site in Amiens (Transmission Systems) have followed up on the signing of the 2018 industrial chair with numerous projects.
Reducing vibrations through nonlinearities: theses for advancing the subject
The chair aims to work on noise and vibration control in the automotive powertrains of the future.
Three theses are currently underway: the first focuses on studying and reducing vibrations in gear transmissions in electric or hybrid powertrains; the second concerns a purely mechanical device for reducing these vibrations, making maximum use of non-linearities. A third thesis will be completed at the end of November 2020. It has focused on semi-active anti-vibration devices based on coupling mechanical vibrations to an electrical circuit using an electromagnetic transducer. These three theses, co-supervised by Olivier Thomas, Christophe Giraud-Audine, and Aurélien Grolet, in collaboration with Valeo, aim to better control the nonlinearities of current devices, either to reduce them or to take advantage of them and design more efficient technical objects. The goal is both to generate knowledge on upstream concepts, validated by academic publications, and to participate in the development of their industrial implementation with Valeo, valued by patents.
Share the knowledge you have acquired
With the aim of sharing the knowledge acquired through the industrial chair, engineers from Valeo's Amiens site (Transmission Systems) continue to contribute to the third-year TETRA expertise courses in the Grande École Program. "Last year, we added a module dedicated to the control of nonlinear vibration phenomena to the TETRA expertise program, taught by A. Grolet and O. Thomas,"explains the latter, a specialist in vibration mechanics at Arts et Métiers holder of the chair.
Another opportunity: Valeo's financial participation in the ENOC (European Nonlinear Dynamics Conference) international scientific congress in July 2021, during which Olivier Thomas and his team will present their research at the mini-symposium entitled "Nonlinear dynamics in acoustics," which he is co-organizing.
