Results 251 to 260 of about 1,446,654 (290)
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On a theory for the vortex-excited oscillations of flexible cylindrical structures
Journal of Sound and Vibration, 1975The periodic shedding of vortices that accompanies the cross-flow past a bluff cylindrical body can excite the body into resonant transverse oscillations when the vortex shedding frequency and a body natural frequency are sufficiently close to one another.
Skop, R. A., Griffin, O. M.
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The excitation of waves on a flexible panel in a uniform flow
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1998The author applies theoretical and numerical methods to study the wave-bearing behaviour of a finite flexible plate in a uniform flow under oscillatory excitation. It is found that the plate can respond to the frequences other than that of the driver; these frequences may either be present in the start-up procedure or be generated by wave conversions ...
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Response of a flexible marine column to base excitation
2010The displacement response of a flexible, surface-piercing cylinder subjected to a unidirectional base motion is considered in this study. Laboratory experiments have been performed with a circular, fixed-base model using sinusoidal and scaled seismic input motion.
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Acoustically excited jet flowing through flexible membranes
36th AIAA Aerospace Sciences Meeting and Exhibit, 1998Large amplitude pressure oscillations are sometimes encountered in the combustion chamber of solid rocket motors. In the case of segmented propellant, a possible cause of excitation of these oscillations is the presence of flexible inhibitors placed between the segments.
L. Fouilhac, E. Gutmark, T. Garrison
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Wave Excitation on Flexible Walls in The Presence of a Fluid Flow
2003Theoretical and computational investigations of wave excitation and evolution in fully-coupled flow-structure systems are discussed. A distinguishing feature of the body of work reviewed is its attempt to shed light on how and where waves come into being in response to some form of applied excitation.
A. D. Lucey, N. Peake
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Surface wave excitation on a fluid-loaded flexible structure
Wave Motion, 1995zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Smith, B. J., Tew, R. H.
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Experimental Study of Chaos in a Flexible Parametrically Excited Beam
14th Biennial Conference on Mechanical Vibration and Noise: Dynamics and Vibration of Time-Varying Systems and Structures, 1993Abstract Nonlinear vibrations in an axially driven limber cantilever beam are studied experimentally to determine whether the observed aperiodic motions are chaotic, and to find the attractor dimension. Using the method of delays and time series calculations, the largest Lyapunov exponent is found to be positive, indicating that the ...
C. P. Baker, M. E. Genaux, T. D. Burton
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Mechanical Systems and Signal Processing, 2013
Abstract Reliable gearbox design calculations require sufficient insight in gearbox dynamics, which is determined by the interaction between the different excitation mechanisms and the gearbox modal behavior. Both external gearbox excitation originating from the wind turbine drive train and internal gearbox excitation are important.
Jan Helsen +6 more
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Abstract Reliable gearbox design calculations require sufficient insight in gearbox dynamics, which is determined by the interaction between the different excitation mechanisms and the gearbox modal behavior. Both external gearbox excitation originating from the wind turbine drive train and internal gearbox excitation are important.
Jan Helsen +6 more
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Improving the Flexibility of Dynamic Prosody Modification Using Instants of Significant Excitation
Circuits, Systems, and Signal Processing, 2015Modification of suprasegmental features such as pitch and duration of original speech by fixed scaling factors is referred to as static prosody modification. In dynamic prosody modification, the prosodic scaling factors (time-varying modification factors) are defined for all the pitch cycles present in the original speech.
D. Govind 0001, Tinu Theckel Joy
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Laterally Excited Flexible Tanks with Nonuniform Density Liquid
Journal of Engineering Mechanics, 1996A study of the dynamic responses of flexible tanks containing nonuniform liquid under horizontal base excitations is presented. The system considered is an upright, circular cylindrical tank filled with an incompressible and inviscid liquid in which the density increases with the liquid depth. Only the impulsive components of response are considered in
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