Results 11 to 20 of about 589,600 (262)

Unbalance Response Analysis of a Rotor Kit with Two Identical Discs Located Between Bearings

open access: yesTehnički Glasnik, 2023
In this paper, the dynamic behavior of a rotor kit with two identical disks located between the plain bearings was analyzed. Modal and harmonic analysis of this rotor kit configuration were performed in the Ansys software package.
Marko Katinić   +3 more
doaj   +1 more source

Experimental research of ice cuttings transport by air while drilling of the snow-firn layer

open access: yesЛëд и снег, 2023
The snow-firn layer of the glaciers of Antarctica and Greenland contains data on the composition of the atmosphere in the past, volcanic eruptions, forest fires, anthropogenic pollution, and many other unique information.
S. A. Ignatiev   +4 more
doaj   +1 more source

Predicting Critical Speed of Railway Tracks Using Artificial Intelligence Algorithms

open access: yesVibration, 2023
Motivated by concerns regarding safety and maintenance, the operational speed of a railway line must remain significantly below the critical speed associated with the track–ground system. Given the large number of track sections within a railway corridor
Ana Ramos   +4 more
doaj   +1 more source

A Study on the Design of Rotor for 10 kWh Flywheel Energy Storage System [PDF]

open access: yes한국정밀공학회지, 2019
The importance of environmentally-friendly energy production has been growing globally, and studies on energy storage technologies are underway, to supply produced energy to consumers.
Beom Soo Kang, Deuk Kyu Lee
doaj   +1 more source

Critical Speed of Hyperbolic Disks and Eccentricity Effects on The Stability of The Rotor Bearing System [PDF]

open access: yesEngineering and Technology Journal, 2007
The critical speed of hyperbolic disks for the selected model is calculatedin three different cases, anisotropic material and thermal case, isotropicmaterial and thermal case finally isotropic material and thermal withgenerated heat case. The second case
Muhannad Zedan Khalifa
doaj   +1 more source

Modal Analysis and Rotor-Dynamics of an Interior Permanent Magnet Synchronous Motor: An Experimental and Theoretical Study

open access: yesApplied Sciences, 2020
This paper investigates mechanical vibrations of an interior permanent magnet (IPM) synchronous electrical motor designed for a wide range of speeds by virtue of the modal and rotordynamic theory.
Selma Čorović, Damijan Miljavec
doaj   +1 more source

Remote Determination of Critical Speed and Critical Power in Recreational Runners

open access: yesInternational Journal of Sports Physiology and Performance, 2023
Purpose: This study aimed to compare estimations of critical speed (CS) and work completed above CS (D′), and their analogies for running power (critical power [CP] and W′), derived from raw data obtained from habitual training (HAB) and intentional maximal efforts in the form of time trials (TTs) and 3-minute all-out tests (3MTs) in recreational ...
Hunter, Ben   +2 more
openaire   +3 more sources

Application of the Athlete's Performance Passport for Doping Control: A Case Report

open access: yesFrontiers in Physiology, 2018
The efficient use of testing resources is a key issue in the fight against doping. The longitudinal tracking of sporting performances to identify unusual improvements possibly caused by doping, so-called “athlete's performance passport” (APP) is a new ...
Sergei Iljukov   +3 more
doaj   +1 more source

Study on the Vibration Characteristics of Yaw Gear System for Large-Capacity Offshore Wind Turbine

open access: yes한국해양공학회지, 2023
Vibration and noise must be considered to maximize the efficiency of a yaw system and reduce the fatigue load acting on a wind turbine. This study investigated a method for analyzing yaw-system vibration based on the change in the load-duration ...
HyoungWoo Lee   +2 more
doaj   +1 more source

Assessment of the Affecting Elements on the Quality of Life and Human Well-being in Congested Urban Centers; Case Study: Sulaymaniah City

open access: yesTikrit Journal of Engineering Sciences, 2019
This Study is an empiric-analytical research in city planning discipline was conducted in Sulaymaniyah city from Dec. 2015 until July 2017. Geographically Sulaymaniah situates north-east of Republic of Iraq.
Othman Kareem Mohammed   +1 more
doaj   +1 more source

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