Results 251 to 260 of about 226,936 (306)

Actuator and Exciter Placement for Flexible Structures

Journal of Guidance, Control, and Dynamics, 1997
Summary: Systematic approaches to select the optimal candidate sets for actuator and exciter placement are developed. The performance of control and system identification for flexible structures depends strongly on the locations of actuators and exciters.
Roh, HS, Park, YJ Park, Youngjin
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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
openaire   +1 more source

Flexible control of the parametrically excited pendulum

Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1996
The purpose is not only to study the behaviour of a parametrically excited pendulum, but also to present the topological theory of dynamical systems in order to select in parameter and phase space the desired orbits from a large variety of unstable solutions.
Bishop, S. R., Xu, D. L., Clifford, M. J.   +2 more
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Underwater Propulsion Using Forced Excitation of a Flexible Beam

Journal of Vibration and Acoustics, 2023
Abstract Aquatic animals commonly oscillate their fins, tails, or other structures to propel and control themselves in water. These elements are not perfectly rigid, so the interplay between their stiffness and the fluid loading dictates their dynamics.
Sanders Aspelund, Mahmoud Abdullatif, Ranjan Mukherjee, Aren Hellum   +3 more
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Particle current on flexible surfaces excited by harmonic waves

Physical Review E, 2013
In this paper, a study on the directed particle current on flexible surfaces excited by a harmonic wave is reported. The proposed theory considers three different models for the kinematics of the surface, namely the Euler-Bernoulli, Timoshenko, and Rayleigh surface wave models.
Neeta, Verma, Anirvan, DasGupta
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On the extreme response of heave-excited flexible risers

Applied Ocean Research, 2000
The focus of this paper is on the development of a high effective practical approach to assess the short-term extreme response statistics of flexible risers excited by the first-order heave motion of a floating unit. The extreme response statistics is obtained by fitting a probability distribution directly to a sample of extreme response values.
L.V.S. Sagrilo, M.Q. Siqueira, G.B. Ellwanger, E.C.P. Lima, E.J.B. Ribeiro, C.A.D. Lemos   +5 more
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Nonlinear Dynamics of a Transversely Excited Flexible Cantilever Beam

Volume 3A: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration of Nonlinear, Random, and Time-Varying Systems, 1995
Abstract Some experimental results concerning the nonlinear dynamics of a transversely excited beam are presented. The excitation is harmonic. A frequency sweep around the fourth natural frequency of the beam reveals some interesting modal interactions. The first phenomenon is the transfer of energy from the fourth mode, approximately 33.
Mahmood Tabaddor, Ali H. Nayfeh
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Parametrically Excited Electrostatic MEMS Cantilever Beam With Flexible Support

Journal of Vibration and Acoustics, 2016
Parametric resonators that show large amplitude of vibration are highly desired for sensing applications. In this paper, a microelectromechanical system (MEMS) parametric resonator with a flexible support that uses electrostatic fringe fields to achieve resonance is introduced.
Mark Pallay, Shahrzad Towfighian
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Quenching of an excitation moving on a flexible polymer

The Journal of Chemical Physics, 2003
We study theoretically the irreversible quenching of an excitation migrating on a polymer by small quencher molecules. Using a simplified superposition approximation, we solve the hierarchical reaction-diffusion equations and obtain the quenching rate and survival probability of the excitation. Depending upon the excitation mobility as well as upon the
Pyeong Jun Park, Sangyoub Lee
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Fuzzy-logic control of parametrically excited impacting flexible system

Archive of Applied Mechanics (Ingenieur Archiv), 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marghitu, D. B., Diaconescu, C., Boghiu, D.   +2 more
openaire   +2 more sources