Results 231 to 240 of about 475,895 (274)

Non-linear flapping vibrations of rotating blades

Journal of Sound and Vibration, 1982
Summary: The nonlinear equations of motion of a rotating blade undergoing extensional and flapwise bending vibrations are derived, including nonlinearities up to 0(e3). The strain-displacement relationship derived is compared with expressions derived by earlier investigators and the errors and the approximations made in some of those are brought out ...
Venkatesan, C, Nagaraj, VT
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The Vibration of Propeller Blades

Aircraft Engineering and Aerospace Technology, 1948
THE study of the vibration of a straight elastic bar is a very old one. The vibrations may be classified as lateral (or transverse) torsional and longitudinal. The first two are the more important ones and also the more difficult. We shall consider the lateral and torsional vibrations of a bar clamped at one end and free at the other, which may rotate ...
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Airscrew Blade Vibration

The Journal of the Royal Aeronautical Society, 1937
During development of solid metal airscrews in the U.S.A. many vibration failures occurred and various investigations have been made there and elsewhere with a view to overcoming such troubles. The problem is to avoid airscrew failures while keeping weight as low as possible; its solution involves mathematical analysis, further development of ...
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The Stress Problem of Vibrating Compressor Blades

Journal of Applied Mechanics, 1955
Abstract In order to demonstrate the general nature of the actual vibrations of compressor and turbine blades, the author undertakes a simplified analysis in which a single stiff blade, with one translational and one pitching mode, is studied.
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Vibration supression for turbine blades

The Journal of the Acoustical Society of America, 1982
A method and apparatus for suppressing vibration in turbine blading and the like is disclosed. A damping tube is inserted through an aperture in each of a plurality of turbine blades. By expanding the damping tube after it is inserted in the blades the tube is firmly secured to each blade.
Emil Anner, Harry Brunner, Hans J. Meister   +2 more
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Turbine Blade Vibrations of Turbochargers

SAE Technical Paper Series, 1967
<div class="htmlview paragraph">The causes of turbine blade excitation are described, and the factors that influence amplitudes of vibration are discussed. Blade rotation in an asymmetrical pressure field produces a periodic force on the blade. Harmonics of this periodic force excite the blades at their natural frequencies.
V. A. Zastrow, E. R. Bernson
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Localization of Vibrations in Blade Assemblies

Journal of Vibration and Control, 2010
A simple model of blade interactions through an elastic disk is suggested in this paper. The elasticity of a disk is modeled using a ring on an elastic foundation. The linear discrete model of a bladed disk is obtained using the flexibility matrix.
K.V. Avramov, J. Awrejcewicz
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Free Vibration of Blade Packets

Journal of Mechanical Engineering Science, 1977
The free-vibration characteristics of shrouded blade packets are studied using the finite-element method. The effects of various weight ratios, flexural rigidity ratios and length ratios between the blades and shrouds on the frequencies of vibration of the blade packet are investigated.
J. Thomas, H. T. Belek
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The Vibrations of Laced Turbine Blades

The Journal of the Royal Aeronautical Society, 1957
While the use of blade lacing wires or shrouding is not altogether common in gas turbine practice, occasions may arise when their use is desirable, and the purpose of this note is t o present a method whereby the vibrational characteristics of a number of blades wired together may be conveniently found.
J. P. Ellington, H. McCallion
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The Vibration of Blades in Axial Turbomachinery

ASME 1966 Winter Annual Meeting: GT Papers, 1966
This paper describes a recommended design and development procedure for reducing the possibility of vibrational problems in the blading of axial turbomachinery. The recommendations that are presented are based upon a study undertaken for the Bureau of Ships, United States Navy, under Contract No. NObs-92089.
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