Topological optimisation; Moving morphable component; Efficient global optimisation; Friction damping
Abstract :
[en] Friction dampers are commonly used to reduce the vibration amplitude of aircraft turbine blades. However, the shape of such friction dampers can affect significantly damping characteristics and the overall nonlinear dynamic behaviour of the structure. This chapter exploits topological optimisation to identify damper geometries that minimise response amplitude. The (near-)maximum responses are efficiently computed by solving the harmonic balance equations and a phase quadrature condition. Moving Morphable Components (MMC) are used to describe the damper geometry, and an Efficient Global Optimisation (EGO) algorithm is used for the optimisation.
Disciplines :
Mechanical engineering
Author, co-author :
Denimal, Enora; Imperial College London > Mechanical Engineering > Dynamics Group
Renson, Ludovic ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux ; Imperial College London > Mechanical Engineering
Salles, Loïc ; Université de Liège - ULiège > Aérospatiale et Mécanique (A&M) ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Vibration of Turbomachines ; Imperial College London > Mechanical Engineering > Vibration University Technology Center
Language :
English
Title :
Topological Optimisation of Friction Dampers for Nonlinear Resonances
Publication date :
21 June 2021
Event name :
NODYCON
Event place :
Roma, Italy
Event date :
2021
Audience :
International
Main work title :
Advances in Nonlinear Dynamics. NODYCON Conference Proceedings Series
