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Topological optimisation of friction dampers for nonlinear resonances mitigation

Enora Denimal 1, 2 Ludovic Renson 1 Loic Salles 1
1 Department of Mechanical Engineering [Imperial College London]
2 I4S - Statistical Inference for Structural Health Monitoring
Inria Rennes – Bretagne Atlantique , COSYS - Département Composants et Systèmes
Abstract : 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. The present work exploits topological optimization to identify damper geometries that minimize 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 Optimization (EGO) algorithm is used for the optimization.
Keywords : topological optimisation moving morphable component efficient global optimisation friction damping
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https://hal.inria.fr/hal-03165602
Contributor : Enora Denimal <>
Submitted on : Wednesday, March 10, 2021 - 5:43:15 PM
Last modification on : Thursday, March 18, 2021 - 1:57:44 PM

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Enora Denimal, Ludovic Renson, Loic Salles. Topological optimisation of friction dampers for nonlinear resonances mitigation. Nodycon 2021 - Second International Nonlinear Dynamics Conference, Feb 2021, Roma / Virtual, Italy. pp.1-12. ⟨hal-03165602⟩

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