This study is concerned with the theoretical and quantitative experimental determination of critical loads which separate stable from unstable states of equilibrium of a mechanical system subjected to the action of an impinging fluid jet. It was found that the type of loss of stability is determined by the properties of the surface upon which the jet impinges. For a smooth surface, stability was lost by divergence (static buckling), whereas for a surface with a screen of certain mesh size, stability was lost by flutter (oscillations with increasing amplitudes). The experimental results have been compared with a theoretical stability analysis of this nonconservative system and a satisfactory correlation of numerical values is shown to exist, particularly if the peculiar effects of damping are accounted for.
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December 1969
Research Papers
Instability of a Mechanical System Induced by an Impinging Fluid Jet
W. T. Feldt,
W. T. Feldt
Department of Materials Engineering, University of Illinois at Chicago Circle, Chicago, Ill.
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S. Nemat-Nasser,
S. Nemat-Nasser
Department of the Aerospace and Mechanical Sciences, University of California at San Diego, La Jolla, Calif.
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S. N. Prasad,
S. N. Prasad
Department of Civil Engineering, University of Mississippi, University, Miss.
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G. Herrmann
G. Herrmann
Department of Civil Engineering, Northwestern University, Evanston, Ill.
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W. T. Feldt
Department of Materials Engineering, University of Illinois at Chicago Circle, Chicago, Ill.
S. Nemat-Nasser
Department of the Aerospace and Mechanical Sciences, University of California at San Diego, La Jolla, Calif.
S. N. Prasad
Department of Civil Engineering, University of Mississippi, University, Miss.
G. Herrmann
Department of Civil Engineering, Northwestern University, Evanston, Ill.
J. Appl. Mech. Dec 1969, 36(4): 693-701 (9 pages)
Published Online: December 1, 1969
Article history
Received:
June 25, 1968
Revised:
February 3, 1969
Online:
September 14, 2011
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Citation
Feldt, W. T., Nemat-Nasser, S., Prasad, S. N., and Herrmann, G. (December 1, 1969). "Instability of a Mechanical System Induced by an Impinging Fluid Jet." ASME. J. Appl. Mech. December 1969; 36(4): 693–701. https://doi.org/10.1115/1.3564758
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