Buscar
Mostrando ítems 21-30 de 50
Aeroelastic analysis and characterization of three-degree-of-freedom systems with discontinuous nonlinearity
(2020-01-01)
The effects of freeplay, multi-segmented, and impact nonlinearities in the pitch and control surface degree of freedoms on the behavior of a three-degree of freedom aeroelastic system are investigated. The aeroelastic ...
Aeroelastic Stability Analysis Using Linear Matrix Inequalities
(Springer, 2012-01-01)
The present work describes an alternative methodology for identification of aeroelastic stability in a range of varying parameters. Analysis is performed in time domain based on Lyapunov stability and solved by convex ...
Frequency domain unsteady transonic aerodynamics for flutter and limit cycle oscillation prediction
(Associação Brasileira de Engenharia e Ciências Mecânicas - ABCM, 2010)
The purpose of this study was to develop new approaches for predicting transonic flutter and limit cycle oscillations (LCO) using computational methods. The TSD equation is separated into the in-phase and out-of-phase ...
Constructive Aerodynamic Interference in a Network of Weakly Coupled Flutter-Based Energy Harvesters
(Molecular Diversity Preservation International, 2020-12)
Converting flow-induced vibrations into electricity for low-power generation has received growing attention over the past few years. Aeroelastic phenomena, good candidates to yield high energy performance in renewable wind ...
Airfoil control surface discontinuous nonlinearity experimental assessment and numerical model validation
(2016-04-01)
A variety of dynamic behaviors that may be encountered in aeroelastic systems with discontinuous nonlinearities has motivated investigations that may support future applications in flight controls design, flutter prediction, ...
Comprehensive nonlinear aeroelastic modeling and comparative analysis of continuous wing-based systems
(2021-01-01)
Nowadays, wing-based systems represent imperative built-in constituents of many structures in a variety of fields. Consequently, robust modeling capable of accurately predicting such systems’ responses is an intriguing key ...
Fast multipole accelerated unsteady vortex lattice method based computations
(American Institute of Aeronautics and Astronautics Inc., 2019-06)
The authors present an accelerated aerodynamic computational model derived from the integration of the fast multipole method (FMM) with the unsteady vortex lattice method (UVLM) based aerodynamic model. It is determined ...
Influence of structural nonlinearities in stall-induced aeroelastic response of pitching airfoils
(European Assoc Structural Dynamics, 2015)
Enhanced aeroelastic energy harvesting by exploiting combined nonlinearities: theory and experiment
(IOP PUBLISHING LTD, 2011)
Converting aeroelastic vibrations into electricity for low power generation has received growing attention over the past few years. In addition to potential applications for aerospace structures, the goal is to develop ...