Bifurcation tracking of geared systems with parameter-dependent internal excitation

A Mélot, E Rigaud, J Perret-Liaudet - Nonlinear Dynamics, 2022 - Springer
We herein propose an algorithm for tracking smooth bifurcations of nonlinear systems with
interdependent parameters. The approach is based on a complex formulation of the well …

Efficient reduced-order modeling of unsteady aerodynamics robust to flight parameter variations

H Liu, H Hu, Y Zhao, R Huang - Journal of Fluids and Structures, 2014 - Elsevier
In this study, a computational fluid dynamics (CFD) based reduced-order modeling (ROM)
approach robust to flight parameter variations is presented. The approach, which uses …

Flutter generation and control using mistuning in a turbine rotating rig

R Corral, J Beloki, P Calza, R Elliott - AIAA Journal, 2019 - arc.aiaa.org
The paper describes a free-flutter experiment on a stand-alone low-pressure turbine bladed
rotor in a high-speed rotating wind tunnel together with the most relevant design decisions …

Tip leakage flow of a vibrating airfoil in a linear compressor cascade

L Shi, H Ma, L Wang, B Yu, T Wang - Physics of Fluids, 2023 - pubs.aip.org
In turbomachinery, understanding the interaction between blade vibrations and the tip flow is
of great interest due to current trends, which tend to thinner airfoils with higher loading and …

Multi-parametric optimization for controlling bifurcation structures

A Mélot, E Denimal, L Renson - Proceedings of the …, 2024 - royalsocietypublishing.org
Bifurcations organize the dynamics of many natural and engineered systems. They induce
qualitative and quantitative changes to a system's dynamics, which can have catastrophic …

An improved nonlinear reduced-order modeling for transonic aeroelastic systems

Z Yang, R Huang, H Liu, Y Zhao, H Hu - Journal of Fluids and Structures, 2020 - Elsevier
In this study, an improved nonlinear reduced-order model composed of a linear part and a
nonlinear part is explored for transonic aeroelastic systems. The linear part is identified via …

Experimental subsonic flutter of a linear turbine blade cascade with various mode shapes and chordwise torsion axis locations

P Eret, V Tsymbalyuk - Journal of Turbomachinery, 2023 - asmedigitalcollection.asme.org
Axial flow turbomachinery is susceptible to self-excited vibrations known as flutter, primarily
affecting high-aspect ratio rotor blades. Experimental studies of blade flutter are essential to …

Efficient steady and unsteady flow modeling for arbitrarily mis-staggered bladerow under influence of inlet distortion

HM Phan, L He - Journal of Engineering for Gas …, 2021 - asmedigitalcollection.asme.org
Accurate and efficient predictions of the steady and unsteady flow responses due to the
blade-to-blade variation as well as due to the nonaxisymmetric inlet distortion have been …

Experimental validation of numerical blade flutter prediction

VV Vedeneev, M Kolotnikov, P Makarov - Journal of propulsion and …, 2015 - arc.aiaa.org
Blade flutter of modern gas-turbine engines is one of the main issues that engine designers
have to face. The most used numerical method that is employed for flutter prediction is the …

Eddy current-based vibration suppression for finish machining of assembly interfaces of large aircraft vertical tail

W Fan, L Zheng, W Ji, X Zhao… - Journal of …, 2019 - asmedigitalcollection.asme.org
Assembly interface of aircraft vertical tail is a large thin-wall structure and made from titanium
alloys, which causes easily machining vibration, deformation and undercutting in finish …