Results 1 to 10 of about 2,097 (111)

Experimental study on the lubrication characteristics of porous journal bearings with hydrodynamic shape forming at annular surface under sine-wave vibrated conditions (Examination into the shaft whirling behavior at pivot supported condition by measuring the time history waveform on shaft with parameter of vibrated Frequency changes)

open access: yesNihon Kikai Gakkai ronbunshu, 2018
This report describes the study on the lubrication characteristics of porous journal bearings as a DC spindle motor's bearing system made with oil impregnated sintered materials having some hydrodynamic shapes. Herring Bone (I & II), Three Lobed
Shigeru OHTSUKA   +3 more
doaj   +5 more sources

Experimental study on the lubrication characteristics of porous journal bearings with hydrodynamic shape forming at annular surface under sine-wave vibrated conditions (Examination into the shaft rotating behavior at the starting state by identifying the rotational modes with Frequency Spectrum Analysis of the time history waveform on shaft)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
This report describes the study on the lubrication characteristics of porous journal bearings, which were made with oil impregnated sintered materials having some hydrodynamic shapes, to apply them for a DC Spindle Motor’s bearing system. Herring Bone (I
Shigeru OHTSUKA   +3 more
doaj   +5 more sources

Mechanical oscillations enhance gene delivery into suspended cells. [PDF]

open access: yesSci Rep, 2016
published_or_final_versio
Zhou ZL   +6 more
europepmc   +2 more sources

Rheology of Weakly Vibrated Granular Media [PDF]

open access: yes, 2013
We probe the rheology of weakly vibrated granular flows as function of flow rate, vibration strength and pressure by performing experiments in a vertically vibrated split-bottom shear cell.
Dijksman, Joshua A.   +2 more
core   +3 more sources

Interplay of air and sand: Faraday heaping unravelled [PDF]

open access: yes, 2007
We report on numerical simulations of a vibrated granular bed including the effect of the ambient air, generating the famous Faraday heaps known from experiment.
Gerner, Henk Jan van   +3 more
core   +5 more sources

Low-frequency oscillations in narrow vibrated granular systems [PDF]

open access: yes, 2013
We present simulations and a theoretical treatment of vertically vibrated granular media. The systems considered are confined in narrow quasi-two-dimensional and quasi-one-dimensional (column) geometries, where the vertical extension of the container is ...
Luding, S.   +2 more
core   +4 more sources

On the steady streaming flow due to high-frequency vibration in nearly inviscid liquid bridges [PDF]

open access: yes, 1998
The steady streaming flow due to vibration in capillary bridges is considered in the limiting case when both the capillary Reynolds number and the non-dimensional vibration frequency (based on the capillary time) are large.
Nicolás, José A.   +2 more
core   +2 more sources

Exact stationary solutions of the parametrically driven and damped nonlinear Dirac equation [PDF]

open access: yes, 2019
Two exact stationary soliton solutions are found in the parametrically driven and damped nonlinear Dirac equation. The parametric force considered is a complex ac force. The solutions appear when their frequencies are locked to half the frequency of the
Quintero, Niurka R.   +1 more
core   +1 more source

A Simple Model for Faraday Waves

open access: yes, 1996
We show that the linear-stability analysis of the birth of Faraday waves on the surface of a fluid is simplified considerably when the fluid container is driven by a triangle waveform rather than by a sine wave. The calculation is simple enough to use in
Bechhoefer, John, Johnson, Brad
core   +1 more source

Fourier analysis of wave turbulence in a thin elastic plate

open access: yes, 2010
The spatio-temporal dynamics of the deformation of a vibrated plate is measured by a high speed Fourier transform profilometry technique. The space-time Fourier spectrum is analyzed.
A. Boudaoud   +13 more
core   +4 more sources

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