Results 231 to 240 of about 67,126 (262)

Response of a flexible marine column to base excitation

2010
The 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, 1998
Large 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

2003
Theoretical 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, 1995
zbMATH 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, 1993
Abstract 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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Laterally Excited Flexible Tanks with Nonuniform Density Liquid

Journal of Engineering Mechanics, 1996
A 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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Assessment of excitation mechanisms and structural flexibility influence in excitation propagation in multi-megawatt wind turbine gearboxes: Experiments and flexible multibody model optimization

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, Ben Marrant, Frederik Vanhollebeke, Filip De Coninck, Dries Berckmans, Dirk Vandepitte, Wim Desmet   +6 more
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Improving the Flexibility of Dynamic Prosody Modification Using Instants of Significant Excitation

Circuits, Systems, and Signal Processing, 2015
Modification 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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Resonant Damping of Flexible Structures Under Random Excitation

2010
Structural vibrations are often dominated by resonant response, and increased efficiency in the damping of these vibrations can often be attained by using the resonant properties of these modes. A typical example is the ‘tuned mass absorber’. While the original design procedure was based on properties of the frequency response graph, it has recently ...
Steen Krenk, Jan Høgsberg
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Microwave re-excitation of femtosecond laser tagging for highly flexible velocimetry

Optics Letters
Molecular tagging velocimetry is typically species specific and limited by excited state/species lifetimes. We utilize laser-generated ionization, long-lived anions, and a time-delayed microwave pulse to monitor the tagged region up to several milliseconds.
Fynn Reinbacher, Sarang Bidwai, James B. Michael   +2 more
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