Results 11 to 20 of about 38,273 (265)

Gas hold-up in a three-phase reciprocating plate column [PDF]

open access: yesJournal of the Serbian Chemical Society, 2005
The influence of the geometry of a reciprocating plate column (diameter), superficial gas velocity, vibration intensity and content of the solid phase in the column on the gas hold-up in a three phase column (G-L-S) were investigated in this study.
Nikolić Ljubiša B.   +3 more
doaj   +3 more sources

Cause analysis of pipeline vibration in natural gas station [PDF]

open access: yesE3S Web of Conferences, 2021
Natural gas station is an important part of the whole natural gas pipeline transmission system, in which the pipeline vibration is a hidden danger that cannot be ignored for the safe operation of the station.
Wu Jia, Kong Shuai, Xia Li, Tang Ping
doaj   +1 more source

Modal analysis and harmonic response analysis of energy-absorbing and anti-scouring columns

open access: yesFrontiers in Earth Science, 2023
Many field observations have found that damage to the support did not increase with the magnitude of the impact ground pressure. To enhance the impact protection performance of “support and surrounding rock” system. From the perspective of preventing the
Zhi Tang   +4 more
doaj   +1 more source

Oxygen mass transfer in a 16.6 cm i. d. multiphase reciprocating plate column [PDF]

open access: yesJournal of the Serbian Chemical Society, 2007
The effects of vibration intensity, superficial gas velocity and content of solid particles on the volumetric oxygen mass transfer coefficient (k1a) in a 16.6 cm i.d. multiphase reciprocating plate column were strudied.
LJUBISA S. VASIC   +4 more
doaj   +3 more sources

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

Effect of Re-vibration Process on Axial Capacity of Short Reinforced Concrete Circular Columns [PDF]

open access: yesEngineering and Technology Journal, 2017
A considerable amount of research work has been performed on the effects of vibrating of fresh concrete on the reduction of shrinkage and creep, the improvement bond stress between reinforcing bar and concrete, reduction the concrete permeability and ...
S.A. Abbas
doaj   +1 more source

Vibration Damping in Bolted Friction Beam-Columns [PDF]

open access: yesVolume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 2009
In this paper we consider dynamic friction within a bolted structure deliberately used to improve damping properties of engineering structures. The model considered for this paper consists of two steel beam-columns bolted together allowing dynamic friction to occur at the interface.
Bournine, Hadjila, Wagg, DJ, Neild, SA
openaire   +3 more sources

Improving seismic resistance using absorbing nodes [PDF]

open access: yesE3S Web of Conferences, 2023
A flexible gusset is a device that improves the seismic resistance and energy dissipation capacity of a structure. To achieve these solo vibration characteristics, the flexible gusset is designed to remain elastic, resulting in reduced vibration to the ...
Skachkov S. V., Kotenko M. P.
doaj   +1 more source

Interstitial gas effect on vibrated granular columns [PDF]

open access: yesPhysical Review E, 2014
Vibrated granular materials have been intensively used to investigate particle segregation, convection, and heaping. We report on the behavior of a column of heavy grains bouncing on an oscillating solid surface. Measurements indicate that, for weak effects of the interstitial gas, the temporal variations of the pressure at the base of the column are ...
Pastenes, Javier   +2 more
openaire   +3 more sources

Analysis of vibration performance of combined long columns based on characteristic frequencies of hydrogenerator

open access: yesShuili Shuiyun Gongcheng Xuebao, 2018
In order to improve the usability and seismic performance of the structures in hydropower station, taking the characteristic frequency of the hydrogenerator as the key parameter index, the modal analysis and resonance check of 4 models including ...
HU Shaowei   +3 more
doaj   +1 more source

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