Results 271 to 280 of about 80,941 (296)

Transient flutter analysis of bluff bodies

Journal of Wind Engineering and Industrial Aerodynamics, 2015
Abstract This paper deals with the flutter theory for bridge decks and presents a new approach for the determination of 27 time domain dynamic force coefficients using forced motion of the deck section at either constant absolute speed (triangular wave form) or constant absolute acceleration (parabolic wave form).
Simon Prud'homme, Frederic Legeron, Andre Laneville   +2 more
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Cascade Flutter Analysis of Cantilevered Blades

Journal of Engineering for Gas Turbines and Power, 1984
An analysis has been developed to treat the aeroelastic behavior of a cascade of cantilevered blades. The unique features of the formulation include consideration of (a) coupling between bending and torsion in each of the blade modes, (b) coupling among blade modes, (c) spanwise variation of blade mode shapes, (d) mechanical damping in each mode, (e ...
A. V. Srinivasan, J. A. Fabunmi
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Multimode flutter analysis of Chacao bridge

IABSE Congress Reports, 2016
<p>The Chacao bridge is a two span suspension bridge located in the southern part of Chile. It has continuous aerodynamic steel girder of 2754m with uneven main spans of 1155m and 1055m. To determine the onset velocity of flutter both section model tests and multimodal modal flutter analysis is employed.
Ketil Aas-Jakobsen, Georg A. Bugge, Svein Erik Jakobsen, Aymen Cheikh Mhamed   +3 more
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Flutter Analysis of Circular Panels

Journal of the Aerospace Sciences, 1962
Summary The flutter problem of flat circular panels with edges elastically restrained against rotation has been formulated in terms of smalldeflection plate theory. The panel is subjected to uniform allround tension or compression in its middle plane, in addition to the supersonic compressible flow passing over its upper surface with still air below ...
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Flutter analysis of light aircraft

Acta Mechanica, 1986
The paper presents a method of flutter analysis of aircraft. It is assumed that the aircraft structure is linear-elastic. Displacements of the structure are approximated by superposition of ''rigid modes'' and natural vibration modes. The method of ''harmonic balance'' is applied to nonlinear control systems.
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Mu Analysis for Turbomachinery Stall Flutter

Volume 6: Structures and Dynamics, Parts A and B, 2011
Flutter is an aeroelastic instability phenomenon that can result either in serious damage or complete destruction of a gas turbine blade structure. To assure a reliable and safe operation, potential for blade flutter must be eliminated from the turbo-machinery stages.
Forhad, M. I., Vishwakarma, Puneet, Xu, Yunjun   +2 more
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Nonlinear flutter analysis of composite panels

Modern Physics Letters B, 2018
Nonlinear panel flutter is an interesting subject of fluid–structure interaction. In this paper, nonlinear flutter characteristics of curved composite panels are studied in very low supersonic flow. The composite panel with geometric nonlinearity is modeled by a nonlinear finite element method; and the responses are computed by the nonlinear Newmark ...
Xiaomin An, Yan Wang
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Flutter analysis of the X33

41st Structures, Structural Dynamics, and Materials Conference and Exhibit, 2000
Flutter analysis performed in support of the X33 Advanced Technology Demonstrator is described. Analysis was conducted over a range of flow regimes using several different analysis codes. The finite element and aerodynamic models used in the analysis have undergone several years of development and refinement resulting in a high degree of model detail ...
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Use of Generalized Coordinates in FLUTTER ANALYSIS

SAE Technical Paper Series, 1944
<div class="htmlview paragraph"><b>THIS paper presents some further developments of the method of generalized coordinates in flutter analysis, a method which has been described by the author in a previous paper.<span class="xref">¹</span></b></div> <div class="htmlview paragraph"><b>
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Interval Analysis-Based Flutter Analysis of Airplane Wings

Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 2012
Modern aircrafts require improved performance and maneuverability while they conduct the missions. The flutter, an aeroelastic phenomenon is one of the important situations that limit the aircraft speed. Furthermore, for aircraft operated at high speed, many uncertainties may exist in its structural and aerodynamics characteristics.
Singiresu S. Rao, Luna Majumder
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