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The dynamic behavior of articulated pipes conveying fluid with periodic flow rate.The plane motion of two rigid, straight articulated pipes conveying fluid is examined. In contrast to previous work, the flow rate is not taken as constant, but is allowed to have small periodic oscillations about a mean value, as would be expected in a pump-driven system. It is shown that in the presence of such disturbances, both parametric and combination resonances are possible. When the system can also admit loss of stability by static buckling or by flutter, it is found that the presence of small periodic disturbances constitutes a destabilizing effect. Floquet theory and converging infinite determinant expansions are used to illustrate a basic difference between systems which lose stability by divergence and those that lose stability by flutter. An algebraic criterion is obtained for the minimum amplitude of flow-rate oscillation required for the system to be affected by the presence of small disturbances.
Document ID
19730058090
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bohn, M. P.
Herrmann, G.
(Stanford University Stanford, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1973
Subject Category
Structural Mechanics
Report/Patent Number
ASME PAPER 73-APMW-32
Accession Number
73A42892
Funding Number(s)
CONTRACT_GRANT: NGL-05-020-397
CONTRACT_GRANT: AF-AFOSR-70-1905
Distribution Limits
Public
Copyright
Other

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