Results 31 to 40 of about 78,101 (302)

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

مجله 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   +1 more source

Multistability and localization in forced cyclic symmetric structures modelled by weakly-coupled Duffing oscillators [PDF]

, 2018
Many engineering structures are composed of weakly coupled sectors assembled in a cyclic and ideally symmetric configuration, which can be simplified as forced Duffing oscillators.
Ciavarella, M., Fontanela, F., Grolet, A., Hoffmann, N., Papangelo, A.   +4 more
core   +6 more sources

Influence of anisotropic support of tool for self-excited chatter in end-milling

Nihon Kikai Gakkai ronbunshu
In end milling, chatter vibration generated during processing becomes a problem in processing accuracy. Chatter vibration is classified into forced chatter and self-excited chatter depending on the cause of the vibration.
Kenichiro MATSUZAKI, Takahiro RYU, Takashi NAKAE, Keizo TSUKAMOTO, Ryuta SAMESHIMA   +4 more
doaj   +1 more source

Numerical Vibration Displacement Solutions of Fractional Drawing Self-Excited Vibration Model Based on Fractional Legendre Functions

Complexity, 2019
In practice, due to the fact that the phenomenon of drawing self-excited vibration can be deemed as one of the hunting phenomena of the mechanical system, this study focuses on investigating the drawing self-excited vibration process through proposing ...
Jiaquan Xie, Yongjiang Zheng, Zhongkai Ren, Tao Wang, Guangxian Shen   +4 more
doaj   +1 more source

Self-Excited Torsional Vibration in the Flexible Coupling of a Marine Propulsion Shafting System Employing Cardan Shafts

Journal of Marine Science and Engineering, 2020
The reliability of propulsion shafting systems is a major concern for ocean-going vessels because mid-ocean repairs can be time-consuming and spare parts must be available.
Myeong-Ho Song, Taek-Kun Nam, Jae-ung Lee   +2 more
doaj   +1 more source

Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device

Sensors, 2021
In this study, we propose a high-sensitivity sensorless viscometer based on a piezoelectric device. Viscosity is an essential parameter frequently used in many fields.
Shinpachiro Urasaki, Hiroshi Yabuno, Yasuyuki Yamamoto, Sohei Matsumoto   +3 more
doaj   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Numerical Study of Forced Vibration Suppression by Parametric Anti-Resonance

Archives of Acoustics, 2016
The parametric anti-resonance phenomenon as an active damping tool for suppression of externally excited resonant vibration is numerically studied herein. It is well known fact that the anti-resonance phenomenon, i.e.
Ludĕk PEŠEK, Petr ŠULC, Ladislav PŮST   +2 more
doaj   +1 more source

On the Suppression of Self-excited Vibration by Servodamper

Bulletin of JSME, 1980
This paper deals with a technique to suppress the self-excited chatter vibration in machine tools by servodamper method proposed by the authors in the previous papers. Firstly, it is shown that the servodamper designed by applying an output feedback control theory is capable of increasing stability in cutting process against the occurrence of the ...
Nobuo TANAKA, Masakazu MIYASHITA, Noboru SUZUKI, Yoshiaki IWATA, Akira KANAI   +4 more
openaire   +2 more sources

Lock-in of the vortex-induced vibrations of a long tensioned beam in shear flow [PDF]

, 2011
The occurrence of lock-in, defined as the local synchronization between the vortex shedding frequency and the cross-flow structural vibration frequency, is investigated in the case of a tensioned beam of length to diameter ratio 200, free to move in both
Bourguet, Rémi, Karniadakis, George E., Triantafyllou, Michael S.   +2 more
core   +1 more source