Results 41 to 50 of about 21,307 (261)

Limit cycle oscillation prediction based on Finite Element-Modal approach [PDF]

Archive of Mechanical Engineering, 2018
The central theme of this work was to analyze high aspect ratio structure having structural nonlinearity in low subsonic flow and to model nonlinear stiffness by finite element-modal approach.
Kamran Ahmad, Shigang Wu, Hammad Rahman
doaj   +1 more source

Active Fluid Gurney Flaps, Controllable Lift Enhancement Toward Wind Turbine Power Production Regulation

Wind Energy, Volume 29, Issue 1, January 2026.
ABSTRACT Meeting the rising demand for renewable energy requires innovative solutions to enhance wind power extraction, particularly given demographic and geographic constraints on wind farm deployment. Active high‐lift devices, such as the Active Fluid Gurney Flap (AFGF), offer a promising approach that can dynamically modify aerodynamic performance ...
Mario Lucas, Jorge Saavedra
wiley   +1 more source

Multi-Fidelity Gradient-Based Optimization for High-Dimensional Aeroelastic Configurations

Algorithms, 2022
The simultaneous optimization of aircraft shape and internal structural size for transonic flight is excessively costly. The analysis of the governing physics is expensive, in particular for highly flexible aircraft, and the search for optima using ...
Andrew S. Thelen, Dean E. Bryson, Bret K. Stanford, Philip S. Beran   +3 more
doaj   +1 more source

Experimental Seismic Response Assessment of Tall Buildings With Large Mass Damping

Earthquake Engineering &Structural Dynamics, Volume 54, Issue 15, Page 3707-3725, December 2025.
ABSTRACT This paper describes an experimental investigation into the seismic performance of a novel integrated damping system. The proposed damping concept mobilises a portion of the building's own mass to generate damping from its differential motion relative to the lateral load‐resisting system.
Miguel Martinez‐Paneda, Ahmed Y. Elghazouli, Kevin Gouder, William Algaard   +3 more
wiley   +1 more source

Uncertainty quantification of structural blade parameters for the aeroelastic damping of wind turbines: a code-to-code comparison [PDF]

Wind Energy Science
Uncertainty quantification (UQ) is a well-established category of methods to estimate the effect of parameter variations on a quantity of interest based on a solid mathematical foundation.
H. Verdonck, O. Hach, J. D. Polman, O. Schramm, C. Balzani, S. Müller, J. Rieke   +6 more
doaj   +1 more source

Joint Actuator and Sensor Fault Diagnosis in Wind Turbine Systems

Wind Energy, Volume 28, Issue 12, December 2025.
ABSTRACT This paper presents a fault diagnosis method for wind turbine systems that can simultaneously detect and estimate both actuator and sensor faults. Unlike previous studies that treat these faults separatelyand focus mainly on pitch angle‐related variables, our study recognizes the interdependence between actuator and sensor faults and expands ...
Evi Elisa Ambarita, Anniken Karlsen, Agus Hasan   +2 more
wiley   +1 more source

Flutter Analysis of a Morphing Wing Technology Demonstrator: Numerical Simulation and Wind Tunnel Testing [PDF]

INCAS Bulletin, 2016
As part of a morphing wing technology project, the flutter analysis of two finite element models and the experimental results of a morphing wing demonstrator equipped with aileron are presented.
Andreea KOREANSCHI, Mehdi ben HENIA, Olivier GUILLEMETTE, Francois MICHAUD, Yvan TONDJI, Oliviu SUGAR GABOR, Ruxandra Mihaela BOTEZ, Manuel FLORES SALINAS   +7 more
doaj   +1 more source

On the Aeroelasticity of the Active Span and Passive Pitching Polymorphing Wing: A Parametric Study

Aerospace, 2022
This paper presents an aeroelastic analysis of a polymorphing wing capable of active span extension and passive pitch variation. The wing is split into two segments: an inboard segment responsible for span extension/retraction and an outboard segment ...
Zawar Haider, Rafic M. Ajaj, Lakmal Seneviratne   +2 more
doaj   +1 more source

Dynamic Performance of Advanced Composite Towers in Offshore Wind Farms: Experimental and Numerical Investigation

Wind Energy, Volume 28, Issue 12, December 2025.
ABSTRACT Conventional steel towers face challenges such as insufficient stiffness and structural instability, making them increasingly unsuitable for supporting large multi‐megawatt wind turbines. This study investigates the dynamic performance of concrete‐filled double‐skin steel tubular (CFDST) wind turbine towers as a novel structural member ...
Xiaogang Jia, Kuangmin Gong, Kaiyuan Liu, Shiping Lan   +3 more
wiley   +1 more source

Comparison of Unsteady Low- and Mid-Fidelity Propeller Aerodynamic Methods for Whirl Flutter Applications

Applied Sciences
Aircraft configurations with propellers have been drawing more attention in recent times, partly due to new propulsion concepts based on hydrogen fuel cells and electric motors.
Christopher Koch, Nils Böhnisch, Hendrik Verdonck, Oliver Hach, Carsten Braun   +4 more
doaj   +1 more source