Results 11 to 20 of about 559,608 (264)
Critical Speed of Hyperbolic Disks and Eccentricity Effects on The Stability of The Rotor Bearing System [PDF]
Engineering 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
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Applied 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
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Study on the Vibration Characteristics of Yaw Gear System for Large-Capacity Offshore Wind Turbine
한국해양공학회지, 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
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Application of the Athlete's Performance Passport for Doping Control: A Case Report
Frontiers 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
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Tikrit 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
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Model Analysis of Axial PM Bearingless Flywheel Machine
IEEE Access, 2022 The special rotor structure of the axial permanent magnet (PM) bearingless flywheel machine (APM-BFM) makes its critical speed more easily affected at high speed, but there are few studies on its rotor dynamics, especially under load conditions.
Zhiying Zhu +4 more
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Critical Vibration and Control of the Maglev High-Speed Motor Based on μ–Synthesis Control
Sensors, 2022 The Maglev motor has the characteristics of high-speed and high-power density, and is widely used in compressors, molecular pumps and other high-speed rotating machinery.
Yefa Hu +4 more
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NUMERICAL PREDICTION OF SOLITARY WAVE FORMATION OF A PLANING HULL IN SHALLOW WATER CHANNELS
Brodogradnja, 2020 This paper uses a CFD (Computational Fluid Dynamics) analysis to investigate the shallow water effects on prismatic planing hull. The turbulence flow around the hull was described by Reynolds Navier Stokes equations RANSE using the k-ɛ turbulence model ...
Tamer M. Ahmed +4 more
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Mechanical Engineering Journal, 2019 These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number
Hiroyuki FUJIWARA +3 more
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Applied Sciences, 2021 To satisfy the requirements of high speed, large capacity and constant winding, a textile winding rotor needs to work in a wide rotation speed range and frequently pass through critical speed points. Thus, the winding rotor adopts the flexible long shaft
Xunxun Ma +5 more
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