Funded research projects

Competitive research grants

COREVE

Control and Energy Recovery from Vibrations in Wind Turbines

Awarded under the “Academic Initiative Research Projects” (APR IA) call from the Centre-Val de Loire region in July 2023, starting in early 2024

Project description: CoREVE focuses on mitigating harmful vibrations in rotating mechanical systems, with a particular application to wind turbines. Large, flexible turbine blades are prone to high-amplitude vibrations due to aerodynamic loads, which can reduce performance and cause fatigue damage. Traditional passive tuned mass dampers (TMD) are limited in handling non-stationary, multi-frequency vibrations. This project explores the use of bistable nonlinear energy absorbers (BNES) and networks of nonlinear absorbers as effective alternatives to TMDs and monostable NES. These devices can passively reduce low-amplitude vibrations across a wide frequency range. Additionally, integrating piezoelectric transducers allows the harvested vibrational energy to power sensors for structural health monitoring, potentially enhancing both vibration mitigation and energy recovery.

Scientific output:

• Audrey Couineaux, Baptiste Bergeot, Sébastien Berger, and Guylaine Poulin-Vittrant . Slow-Fast analysis of a resonant oscillator coupled to a Bi-Stable Nonlinear Energy Sink and a Piezoelectric element. Journées du GDR ExModeli, 2025, ENSAM, Lille, France.
• Baptiste Bergeot and Sébastien Berger. Fast--slow analysis of passive mitigation of self-sustained oscillations by means of a bistable nonlinear energy sink. Physica D: Nonlinear Phenomena, 460:134063, 2024.
• Baptiste Bergeot and Sébastien Berger. Passive mitigation of self-sustained oscillations by means of a bistable nonlinear energy sink: Numerical investigation and fast-slow analysis. In 11th European Nonlinear Dynamics Conference (ENOC 2024), 2024, Delft, The Netherlands.

BQR VIBREP

Semi-Passive Devices for Vibrational Energy Recovery in Rotating Machines such as Wind Turbines, based on the Energy Pumping Concept and Piezoelectricity

Research Quality Bonus (BQR) 2023-2024, INSA Centre Val de Loire

Project description: On the one hand, the research carried out within the framework of this BQR project is a direct continuation of the DSG TECHMUA project. In particular, during two Master’s level (M2) internships, a model of the experimental device was developed, the test bench was finalized, and the first measurements were obtained. On the other hand, theoretical results have helped deepen the understanding of the dynamic behavior—particularly complex—of a BNES.

Scientific output:

• Baptiste Bergeot, and Sébastien Berger. Atténuation passive de vibrations auto-entretenues au moyen d’un absorbeur dynamique non linéaire bistable. Journées du GDR ExModeli, 2023, FEMTO-ST, Besançon, France.

DSG TECHMUA

Deployment of Technological Platforms in Materials, Mechanics, and Ultrasonic Acoustics

Research and Innovation Project within the INSA CVL Strategic Dialogue and Management program (2021-2022)

Project description: Research and innovation project awarded within the framework of the Dialogue Stratégique et de Gestion (DSG) (Strategic Dialogue and Management) 2021–2022 program of INSA Centre Val de Loire. The project initiated a collaboration between LaMé Laboratory and GREMAN on the topic of nonlinear passive vibration mitigation and energy harvesting. An experimental demonstrator was designed during a Master’s level (M2) internship, finalized thanks to the BQR VIBREP funding, and is currently being used in the COREVE project.