Results 11 to 20 of about 623 (160)

A dual-mode dual-stator hybrid rotor synchronous and vernier machine for variable speed applications [PDF]

Scientific Reports
This paper presents the design and electromagnetic performance evaluation of a Dual-Mode Dual-Stator Hybrid-Rotor Synchronous and Vernier Machine (DMDS-HRSVM) developed for automatic washing-machine applications.
Sajad Ali, Qasim Ali, Hafiz Mudassir Munir, Hasan A. Zidan   +3 more
doaj   +2 more sources

Data-driven modeling of subharmonic forced response due to nonlinear resonance [PDF]

Scientific Reports
Complex behavior in nonlinear dynamical systems often arises from resonances, which enable intricate energy transfer mechanisms among modes that otherwise would not interact.
Joar Axås, Bastian Bäuerlein, Kerstin Avila, George Haller   +3 more
doaj   +2 more sources

Stability of Normal Modes and Subharmonic Bifurcations in the 3-Body Stokeslet Problem

Journal of Differential Equations, 1995
The authors investigate a model related to the sedimentation under gravity of spheres in a highly viscous fluid. Motivated by experimental and analytic investigations they study the motions of 3 identical point particles. Due to the symmetry of the model it is possibly to reduce the originally 6-dimensional system of ODEs with one conserved quantity to
Lim, C.C., Mccomb, I.H.
exaly   +3 more sources

Ultrafast-induced coherent acoustic phonons in the two-dimensional magnet CrSBr [PDF]

Structural Dynamics
Magnetism in two-dimensional (2D) van der Waals (vdW) crystals offers promising new directions for low-dimensional physics and devices. In this work, mega-electron volt (MeV) ultrafast electron diffraction was employed to investigate the ultrafast atomic
Jayajeewana N. Ranhili, Sumit Khadka, Junjie Li, John Cenker, Alberto M. Ruiz, Andrei Shumilin, José J. Baldoví, Ka Shen, Mikhail Fedurin, Mark Palmer, Daniel G. Chica, Paul Byaruhanga, Shuo Chen, Xiaodong Xu, Xavier Roy, Byron Freelon   +15 more
doaj   +2 more sources

Asymmetry- and Viscosity-Regulated Atomization of Laminar Impinging Microjets: Morphology Map, Modal Dynamics, and Droplet Statistics [PDF]

Micromachines
Despite decades of studies on symmetric impinging-jet atomization, the combined role of controlled pre-impingement asymmetry and viscosity in setting the instability pathways and droplet statistics of laminar microjets remains insufficiently quantified ...
Xiaoyu Tan, Guohui Cai, Bo Wang, Xiaodong Chen   +3 more
doaj   +2 more sources

Glaciers and Paleorecords Tell Us How Atmospheric Circulation Changes and Successive Cooling Periods Occurred in the Fennoscandia during the Holocene

Journal of Marine Science and Engineering, 2021
Two major climatic phenomena that occurred during the Holocene are interpreted from the resonance in subharmonic modes of long-period Rossby waves winding around the North Atlantic gyre, the so-called gyral Rossby waves (GRWs). These are, on the one hand,
Jean-Louis Pinault
doaj   +1 more source

Analysis of Auto Parametric Oscillations at the Subharmonic Frequency in Two-Phase Ferro Resonance Circuits

Proceedings of the International Conference on Applied Innovations in IT, 2023
Oscillatory processes in nonlinear multiphase electro ferromagnetic circuits (EFMC) have an exceptional variety and complexity, and therefore their research is also associated with solving complex physical problems.
Mukhtorhon Ibadullayev
doaj   +1 more source

A Review of the Role of the Oceanic Rossby Waves in Climate Variability

Journal of Marine Science and Engineering, 2022
In this paper, the role of oceanic Rossby waves in climate variability is reviewed, as well as their dynamics in tropical oceans and at mid-latitudes.
Jean-Louis Pinault
doaj   +1 more source

The evolution of a subharmonic mode in a vortex street [PDF]

Journal of Fluid Mechanics, 2005
The development of a subharmonic three-dimensional instability mode in a vortex street is investigated both numerically and experimentally. The flow past a ring is considered as a test case, as a previous stability analysis has predicted that for a range of aspect ratios, the first-occurring instability of the vortex street is subharmonic. For the flow
Sheard, Gregory, Thompson, Mark, Hourigan, Kerry, Leweke, Thomas   +3 more
openaire   +2 more sources

Effects of Differently Located Clearance on the Dynamic Responses of a Two-Degree-of-Freedom Vibration System

Shock and Vibration, 2021
The mechanical model of a two-degree-of-freedom forced harmonic vibration system with multiclearance rigid constraints is established, considering the location schemes of symmetrical both-sided clearance and asymmetrical multiple clearance.
Yan Yang, Guanwei Luo
doaj   +1 more source