RESONANCE 2023

Session

12 juil. 2023 à 14:00

Toulouse

Présidents de session

Survishino 11 / Passive control of Vibrations

• Régis Dufour ()

Liste des contributions Ordre du jour

239. "PACO#1 - Vibration response of a machine structure filled with high-damping material"

Martini Alberto

12/07/2023 14:00

This work focuses on the use of a polymer concrete as a filling material of structural parts to damp vibrations in machine tools. The goal of the overall project is to improve the dynamic behavior of CNC lathe systems by limiting at most the vibrations triggered in operative conditions, in order to guarantee a high productivity of the machine tool while keeping the machining quality of the...

240. "PACO#2 - Nonlinear damper approaches to flutter mitigation in highly-flexible wings"

Alcorta Roberto

12/07/2023 14:20

The High-Altitude, Long Endurance (HALE) aircraft is an innovative concept with great potential in telecommunications and surveillance applications due to its ability to function as a "pseudo-satellite" within the stratosphere. Its unique features are accomplished in practice through numerous design requirements that ensure maximal efficiency. Regarding the airframe in particular, these lead...

241. "PACO#3 - Nonlinear passive control of galloping of overhead transmission lines: design and numerical verifications"

Leroux Matthieu

12/07/2023 14:40

In the field of power delivery, the vibration of overhead conductors affects the sustainability of transmission lines. The passive control of galloping of conductors is the subject of this study. Galloping oscillations are caused by ice accretion on a cable that creates an aerodynamic instability. The consequences of galloping on transmission lines are electrical outages, fatigue failure of...

242. "PACO#4 - Understanding vibroimpact damping through a numerical energy based approach"

Sadoulet-Reboul Emeline

12/07/2023 15:00

Vibroimpact damping classically consists in the integration in a main vibrating structure of oscillating masses. The energy is dissipated thanks to the impact interactions with the main vibrating structure. An assumption is that an energy transfer towards high frequencies occurs thanks to nonlinear effects, leading to a faster and more efficient energy dissipation compared to lower...

243. "PACO#5 - A passive nonlinear absorber for controlling pathological tremors of human arm"

Gebai Sarah

12/07/2023 15:20

Mechanical vibration absorbers are applied in different domains to protect structures and machines from undesired vibrations. One of the precise applications of such control systems is reducing tremors of the human arm caused by some neurological disorders such as essential tremors. In recent studies, active and linear passive controllers are designed, in the form of a wearable bracelets, to...

330. PACO#6 - Control based continuation of autonomous system — Stabilization mechanisms

Etienne Gourc

12/07/2023 15:40

Experimental analysis of nonlinear dynamical system is always a complicated task because these system can exhibit bifurcations, multi-stability or unstable behavior. When a mathematical system is available, numerical continuation algorithm constitute a powerful tool to investigate the so-called bifurcation diagram. Sieber and Krauskopf introduced the idea of control based continuation,...