Results 21 to 30 of about 36,708 (168)

Study of Bubble Size, Void Fraction, and Mass Transport in a Bubble Column under High Amplitude Vibration

open access: yesChemEngineering, 2018
Vertical vibration is known to cause bubble breakup, clustering and retardation in gas-liquid systems. In a bubble column, vibration increases the mass transfer ratio by increasing the residence time and phase interfacial area through introducing kinetic
Shahrouz Mohagheghian   +3 more
doaj   +1 more source

Vibration reduction and isolation performance of a platform foundation and column base of an ancient wooden structure based on the energy transfer analysis

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2022
Wooden structures, as the most representative structural types of the ancient Chinese architecture, are very common and have a long history. The special construction methods adopted in ancient wooden structures, such as the platform foundations and ...
Cheng Zhang   +3 more
doaj   +1 more source

Dynamic of a cylindrical column on a vibrating base [PDF]

open access: yesVibroengineering Procedia, 2021
The solution of the problem of cylindrical column on a rigid horizontal foundation motion is presented. It is assumed that the base moves in a horizontal direction, there is no slippage between the column and the base, and the column height is significantly greater than the base diameter.
Munitsyn Alexander, Munitsyna Maria
openaire   +1 more source

Development of biaxial active vibration suppression system with piezoelectric inertial actuator for electron microscope

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Active vibration suppression should have high performance and has been studied and applied over the years. However, its practical applications are limited to large objects due to its implementation cost or design man-hour.
Hiroki TAKAHASHI   +2 more
doaj   +1 more source

Stability and Vibration of Imperfect Column

open access: yesProcedia Engineering, 2012
AbstractA special problem of the frequency of the column loaded in compression is presented. In the case of the linearised stability and if the force is close to the elastic critical load, the natural frequency limits to zero. Taking into account the nonlinear theory and the real boundary conditions and for the force near the elastic critical load, the
Nagyová, M., Ravinger, J.
openaire   +1 more source

Study on Fluid-Induced Vibration Power Harvesting of Square Columns under Different Attack Angles

open access: yesGeofluids, 2017
A model of the flow-vibration-electrical circuit multiphysical coupling system for solving square column vortex-induced vibration piezoelectric energy harvesting (VIVPEH) is proposed in this paper. The quasi steady state theory is adopted to describe the
Meng Zhang, Guifeng Zhao, Junlei Wang
doaj   +1 more source

Vibrational Collapse of Hexapod Packings

open access: yesEPJ Web of Conferences, 2017
Columns made of convex noncohesive grains like sand collapse after being released from a confining container. However, structures built from non-convex grains can be stable without external support.
Zhao Yuchen   +6 more
doaj   +1 more source

Effect of Vertical Vibration on the Mixing Time of a Passive Scalar in a Sparged Bubble Column Reactor

open access: yesFluids, 2020
The present study used a sparged bubble column to study the mixing of a passive scalar under bubble-induced diffusion. The effect of gas superficial velocity (up to 69 mm/s) and external vertical vibrations (amplitudes up to 10 mm, frequency <23 Hz ...
Shahrouz Mohagheghian   +2 more
doaj   +1 more source

Grillage Analysis of Plates for Vibration and Stability [PDF]

open access: yesEngineering and Technology Journal, 2007
This study deals with the problem of approximating the dynamic and static analysis of plates by using equivalent grid-framework model. The emphasis, for plate analysis, is on the stability and vibration analysis.
Sabih Al-Sarraf, Ammar Ali
doaj   +1 more source

Vibration and noise measurement of metro depot under urban comprehensive traffic

open access: yesKSCE Journal of Civil Engineering
To promote the process of urban construction, China is vigorously developing the over-track buildings above the metro depot. However, the traffic-induced vibration and noise of over-track buildings greatly affect the quality of life of resident, which ...
Jing Tang   +6 more
doaj   +1 more source

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