Frequency lock-in in pitch–heave stall flutter

D Poirel, L Goyaniuk, A Benaissa - Journal of Fluids and Structures, 2018 - Elsevier
Coupled pitch–heave oscillations of a rigid but elastically mounted NACA0012 wing are
experimentally investigated in a range of airspeeds corresponding to transitional Reynolds …

Combined selection of the dynamic model and modeling error in nonlinear aeroelastic systems using Bayesian Inference

P Bisaillon, R Sandhu, C Pettit, M Khalil, D Poirel… - Journal of Sound and …, 2022 - Elsevier
We report a Bayesian framework for concurrent selection of physics-based models and
(modeling) error models. We investigate the use of colored noise to capture the mismatch …

Bayesian model selection using automatic relevance determination for nonlinear dynamical systems

R Sandhu, C Pettit, M Khalil, D Poirel… - Computer Methods in …, 2017 - Elsevier
Bayesian model selection is augmented with automatic relevance determination (ARD) to
perform model reduction of complex dynamical systems modelled by nonlinear, stochastic …

Comprehensive compartmental model and calibration algorithm for the study of clinical implications of the population-level spread of COVID-19: a study protocol

B Robinson, JD Edwards, T Kendzerska, CL Pettit… - BMJ open, 2022 - bmjopen.bmj.com
Introduction The complex dynamics of the coronavirus disease 2019 (COVID-19) pandemic
has made obtaining reliable long-term forecasts of the disease progression difficult. Simple …

Nonlinear sparse Bayesian learning for physics-based models

R Sandhu, M Khalil, C Pettit, D Poirel… - Journal of Computational …, 2021 - Elsevier
This paper addresses the issue of overfitting while calibrating unknown parameters of over-
parameterized physics-based models with noisy and incomplete observations. A semi …

Effect of Hopf-Hopf bifurcation on the post-flutter behavior of a three-degree-of-freedom airfoil

X Wu, G Li, Y Yue - Aerospace Science and Technology, 2024 - Elsevier
The post-flutter dynamics of a three-degree-of-freedom nonlinear airfoil with unsteady
aerodynamics are investigated based on the Hopf-Hopf bifurcation theory. Many prior works …

Amplitude annihilation in wake-influenced aeroelastic limit-cycle oscillations

BA Kirschmeier, Z Gianikos, A Gopalarathnam… - AIAA Journal, 2020 - arc.aiaa.org
This paper investigates the dynamics of a pitching and heaving aeroelastic wing undergoing
large-amplitude limit-cycle oscillations influenced by a vortical wake from an upstream …

Encoding nonlinear and unsteady aerodynamics of limit cycle oscillations using nonlinear sparse Bayesian learning

R Sandhu, B Robinson, M Khalil, CL Pettit… - Journal of Sound and …, 2024 - Elsevier
This article investigates the applicability of a recently proposed, nonlinear sparse Bayesian
learning (NSBL) algorithm to identify and estimate the complex aerodynamics of limit cycle …

Hysteresis behavior and generalized Hopf bifurcation in a three-degrees-of-freedom aeroelastic system with concentrated nonlinearities

X Wu, G Li, Y Yue - Communications in Nonlinear Science and Numerical …, 2024 - Elsevier
A three-degrees-of-freedom aeroelastic system with concentrated structural nonlinearities is
considered. The aerodynamic loads in the model are simulated by using unsteady …

Aeroelastic oscillations of a pitching flexible wing with structural geometric nonlinearities: Theory and numerical simulation

B Robinson, L da Costa, D Poirel, C Pettit… - Journal of Sound and …, 2020 - Elsevier
This paper focuses on the derivation of an analytical model of the aeroelastic dynamics of an
elastically mounted flexible wing. The equations of motion obtained serve to help …