Results 71 to 80 of about 618,709 (247)

The oscillations of ship lock bottom [PDF]

open access: yesИнженерно-строительный журнал, 2012
The article deals with the dynamic characteristics of the ship lock. The accurate design relations intended to study the natural and forced vibrations of the bottom of the ship lock are provided.
N.Yu. Kuzmin, Yu.E. Senitskiy
doaj  

Interaction of Parametric and Forced Vibrations in High Speed Rotor-Bearing-Systems

open access: yesInternational Journal of Rotating Machinery, 1997
In this paper the interaction of periodic parameter excitation with forced excitations of in general non commensurable basic frequencies is under consideration.
Bernhardt Weyh
doaj   +1 more source

Field testing and dynamic analysis of old continuous truss steel bridge

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2018
Paper presents dynamic field test and analysis results of a three span railway steel continuous truss bridge over river Neris in Jonava. Bridge was originally constructed in 1914.
Artūras Kilikevičius   +6 more
doaj   +1 more source

Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport

open access: yesAdvanced Functional Materials, EarlyView.
Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar   +1 more
wiley   +1 more source

Statistical valuation of vibrations at the rock drilling [PDF]

open access: yesActa Montanistica Slovaca, 2006
The paper describes a measuring device providing a monitoring of forced vibrations arising at the rock cutting by impregnated diamond drilling tools at quasi-constant revolutions and thrust levels.
Zuzana Chlebová   +5 more
doaj  

Steady-state forced vibrations

open access: yes, 1966
International audienceThe following concepts are defined: (i) periodic functions possessing an amplitude, (ii) cosine-like functions, (iii) steady-state forced vibrations. The following theorems are proved: I. If, in $\ddot{x} + f(x) = P g(t) P g(t + T)$,
Rosenberg, Reinhardt
core   +1 more source

Pressure‐Assisted Dimensional Transformation of 2D Hydrogenated Borophene into 0D Boron Quantum Dots

open access: yesAdvanced Functional Materials, EarlyView.
Hydrogenated borophene (HB) is transformed into distinct boron nanostructures through a solvent‐free thermal process. Under flowing nitrogen, hydrogen escape promotes reconstruction into B2O3 nanoplatelets, whereas hydrogen‐induced pressure under sealed conditions facilitates fragmentation into boron quantum dots.
Ozden Gunes Yildiz   +11 more
wiley   +1 more source

Estimation of the composition of the forced and free vibrations of the casing of the steel rope roof of Ukraine Cinema & Concert Hall located in Kharkov over the area of main line tunnel of working metropolitan railway

open access: yesMATEC Web of Conferences, 2018
The paper discusses issues related to the dynamic parameters of the metro train influence on the building construction of Ukraine Cinema & Concert Hall complicated in terms of construction located in Kharkiv City.
Shmukler Valeriy   +2 more
doaj   +1 more source

Investigation of the Rail-Induced Vibrations on a Masonry Historical Building [PDF]

open access: yes, 2010
Increasingly historic masonry buildings are subjected to higher levels of traffic and rail vibrations due to urbanization and population growth. Deterioration and destabilisation of these buildings may result, especially if they were previously damaged ...
Aykut Erkal   +11 more
core   +1 more source

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