Results 261 to 270 of about 11,806 (306)

Vibration Localization Analysis of Bladed Disk with Grouped Blades

Advanced Materials Research, 2010
Vibration localization of bladed disk turns to be much complex when a number of blades are assembled into periodic groups. This work focused on natural frequency distribution and modal localization of bladed disks with grouped blades based on the lumped parameter models, and effects of the blade number in each group on natural frequency were studied ...
Ai Lun Wang, Bo Hai Sun, Jin Bo Chen
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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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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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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 Vibration of Airscrew Blades

Aeronautical journal (London, England : 1897), 1922
Airscrews are generally made of wood and owing to the relatively low Young's modulus of timber the blades of an airscrew have a large measure of flexibility. This flexibility is reflected in the comparatively low frequency of vibration of the blades with consequent undesirable effects.
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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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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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Vibrations of Twisted Rotating Blades

Journal of Vibration and Acoustics, 1984
The literature dealing with vibrations of turbomachinery blades is voluminous, but the vast majority of it treats the blades as beams. In a previous paper a two-dimensional analytical procedure was developed and demonstrated on simple models of blades having camber.
A. W. Leissa, J. K. Lee, A. J. Wang
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Turbine-Blade Vibration and Strength

Journal of Fluids Engineering, 1955
Abstract In the design of turbines, the strength of the blades is a matter of great importance since blading is the heart of the turbine. The authors discuss the factors which affect the strength of turbine blades and show what recent progress has been made and what studies are under way toward improved blade designs.
W. E. Trumpler, H. M. Owens
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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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