Results 41 to 50 of about 858,761 (200)

Principal Parameters Analysis of the Double-Elastic-Constrained Flapping Hydrofoil for Tidal Current Energy Extraction

open access: yesJournal of Marine Science and Engineering, 2022
Taking the rigid NACA0012 airfoil as the object, the key structural parameters of the spring–mass system that govern the dynamics of the double-elastic-constrained flapping hydrofoil are numerically studied in this paper.
Junwei Zhou   +4 more
doaj   +1 more source

Analysis of Damping Characteristics in Wind Turbine‐Energy Storage Hybrid Systems Based on Path Module

open access: yesIET Cyber-Physical Systems
Current analytical methods are inadequate in uncovering the internal propagation mechanisms of disturbances and the interconnections between subsystems in the wind turbine‐storage integrated grid connected system, which faces stability issues. Therefore,
Shanshan Cheng   +6 more
doaj   +1 more source

Performance Comparison of Adaptive Estimation Techniques for Power System Small-Signal Stability Assessment

open access: yesThe Journal of Engineering Research, 2010
This paper demonstrates the assessment of the small-signal stability of a single-machine infinite- bus power system under widely varying loading conditions using the concept of synchronizing and damping torques coefficients.
E. A. Feilat
doaj   +1 more source

Influence of dash-pot with controllable damping coefficient on damping efficiency of TMDI [PDF]

open access: yesMATEC Web of Conferences, 2018
In this paper we study the dynamics of two degree freedom system, which is consist of main body and tuned mass damper with inerter (TMDI). We add the dash-pot with variable damping coefficient to TMDI to study the overall efficiency of the device. The shape of non-linear characteristic of the dash-pot is dependent on one control parameter which governs
Lazarek Mateusz   +2 more
openaire   +2 more sources

Determining the nonlinear damping function using experiments

open access: yesОмский научный вестник
In this article, the coefficients of the nonlinear damping function of a mechanical system with one translational degree of freedom are determined from an experimentally obtained oscillogram of free vibrations.
B. A. Kalashnikov   +2 more
doaj   +1 more source

Wave radiation by a horizontal circular cylinder submerged in deep water with ice-cover

open access: yesJournal of Ocean Engineering and Science, 2019
Using the multipoles method, we formulate the problems of water wave radiation (both heave and surge) by a submerged circular cylinder in water with an ice-cover, the ice-cover being modelled as an elastic plate of very small thickness.
Dilip Das, Manomita Sahu
doaj   +1 more source

Estimation of Damping Coefficient of Acoustic Vibration.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1996
Acoustic resonant vibration occurs in a cavity with a tube bundle when flow velocity reaches some value. The vibration mode is usually transverse to the flow direction and its prevention is easy. However, recently, parallel mode vibration sometimes occurs. The mechanism of vibration was discussed in our previous paper and it seems that the vibration is
YAN, Zhongsen   +3 more
openaire   +2 more sources

The initial research of dynamic parameters for composite structures containing Zeolite

open access: yesBudownictwo i Architektura, 2013
The article aims at presenting the initial results of damping parameters of vibrations in constructions with zeolite. The initial part of the article describes the properties and application of zeolite. The influence of zeolite on concrete parameters was
Jacek Szulej
doaj   +1 more source

PASSIVE DAMPING OF SPACECRAFT SANDWICH PANELS [PDF]

open access: yes, 2007
For reusable and expendable launch vehicles as well as for other spacecraft structural vibration loads are safety critical design drivers impacting mass and lifetime. Here, the improvement of reliability and safety, the reduction of mass, the extension
Romberg, Oliver   +6 more
core  

On the robustness of the average power ratios in damping estimation: application in the structural health monitoring of composites beams [PDF]

open access: yes, 2010
In composites structures, cracking, delamination will cause changes in the measured dynamic response of structure and so on experimentally modal parameters.
J. Morlier   +4 more
core   +1 more source

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