Results 1 to 10 of about 77,548 (281)

Vibration control of self-excited system and forced self-excited system by dynamic vibration absorber

open access: yesNihon Kikai Gakkai ronbunshu, 2021
It is desired that the forced self-excited vibrations of structures subjected to the vortex excitation and the long-period earthquake are quenched. Therefore, this paper deals with the vibration control of self-excited system and forced self-excited ...
Yutaka YOSHITAKE   +5 more
doaj   +3 more sources

Micro-milling self-excited vibrations reduction using vibration absorbers [PDF]

open access: yesمجله مدل سازی در مهندسی, 2017
The goal of this paper is to minimize self-excited vibration in the micro-milling process. This goal is achieved by using passive linear and nonlinear vibration absorbers.
Saleh Shakeri, Farhad Sheykh Samani
doaj   +2 more sources

Analysis of Generalized Self-Excited Vibrations

open access: yesEngineering Transactions, 1994
The asymptotic nonlinear method is applied to salve the generalized equation of the self-excited vibration. In the last several decades, increased interest in the study of asymptotic analysis is observed, based mainly on application of the exact ...
K. Wernerowski
doaj   +1 more source

Numerical Investigation on Torsional Mode Self-Excited Vibration of Guide Vane in a Reversible Pump-Turbine during Pump Mode’s Starting Up [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
In reversible pump-turbines, guide vane vibrations are considered to have potentially severe consequences of noise and structural damage. Unstable torsional mode self-excited vibrations of guide vanes have been reported at small guide vane openings ...
W. Kang, Q. Liang, L. Zhou, Z. Wang
doaj   +1 more source

Research on Ditching Mechanism of Self-Excited Vibration Ditching Machine

open access: yesAgronomy, 2023
A vibration ditching machine is a machine that can effectively reduce ditching resistance and energy consumption. In this paper, taking a self-developed, self-excited vibration ditching machine as the research object, we explore its internal dynamic ...
Jun Li   +7 more
doaj   +1 more source

Polygonal Wear Mechanism of High-Speed Train Wheels Based on Lateral Friction Self-Excited Vibration

open access: yesMachines, 2022
This work details research on the formation mechanism of wheel polygonalization in high-speed trains and its effect factors by numerical modeling in order to prevent the increasingly prevalent problem of wheel polygonal wear.
Yahong Dong, Shuqian Cao
doaj   +1 more source

Variational study of the Holstein polaron [PDF]

open access: yes, 2002
The paper deals with the ground and the first excited state of the polaron in the one dimensional Holstein model. Various variational methods are used to investigate both the weak coupling and strong coupling case, as well as the crossover regime between
Candler G.V., Sun Q., Wang W.-L.
core   +6 more sources

Study on the friction damping characteristics of bladed disk (Comparison of microslip model and macroslip model)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
The vibration characteristics of a bladed disk with the continuous ring type structure have been studied extensively, and the vibration response analyses considering the friction damping between adjacent shrouds have been performed in the recent blade ...
Yasutomo KANEKO   +3 more
doaj   +1 more source

Discrete Element Analysis of Ice-Induced Vibrations of Offshore Wind Turbines in Level Ice

open access: yesJournal of Marine Science and Engineering, 2023
Self-excited vibrations of offshore structures interacting with sea ice, characterized by low frequency and high amplitudes, pose significant hazards to offshore wind turbines (OWTs) in cold seas. This study employs the discrete element method (DEM) with
Xue Long, Lu Liu, Shunying Ji
doaj   +1 more source

Self-excited vibration of whole vehicle with multiple limit cycles induced by shimmy of front wheels

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2020
Front wheel shimmy may induce the self-excited vibration of whole vehicle with multiple limit cycles. This kind of shimmy is difficult to control and can do great harm to the vehicle.
Daogao Wei   +5 more
doaj   +1 more source

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