Results 11 to 20 of about 40,364 (312)
Applied and Computational Mechanics, 2023 In this work, an coupled end-to-end approach for the optimization of the rotor dynamic behavior of a dual-spool aircraft engine along with fatigue life optimization of squirrel cages (SQC) is presented. A realistic model to simulate the rotor dynamics is
Chatzisavvas I. +2 more
doaj +1 more source
Thermal Bending of the Rotor Due to Rotor-to-Stator Rub
International Journal of Rotating Machinery, 2000 The rotor thermal bending due to the rotor-to-stator rubbing can lead to one of three types of observed rotor lateral motion: (1) spiral with increasing amplitude, (2) oscillating between rub]no-rub conditions, and (3) asymptotical approach to the rotor ...
Paul Goldman +2 more
doaj +1 more source
Measurement + Control, 2023 Rotor unbalance faults are one of the high-frequency faults in rotating machinery. As such, their accurate and timely diagnosis is important. In contrast to traditional methods based on static features, the dynamics features and support vector machines ...
Lan Lan, Xiao Liu, Qian Wang
doaj +1 more source
CFD-based curved tip shape design for wind turbine blades [PDF]
Wind Energy Science, 2022 This work presents a high-fidelity shape optimization framework based on computational fluid dynamics (CFD). The presented work is the first comprehensive curved tip shape study of a wind turbine rotor to date using a direct CFD-based approach. Preceding
M. H. Aa. Madsen +4 more
doaj +1 more source
Vibrational Diagnostics of Rotating Machinery Malfunctions
International Journal of Rotating Machinery, 1995 This paper outlines rotating machinery malfunction diagnostics using vibration data in correlation with operational process data. The advantages of vibration monitoring systems as a part of preventive/predictive maintenance programs are emphasized. After
Agnes Muszynska
doaj +1 more source
Rotor dynamics ― four open questions [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 Despite many years of development in the field of rotor dynamics, many issues still need to be resolved. This is due to the fact that turbomachines, even those with low output power, have a very complex design.
Jan Kiciński
doaj +1 more source
Instability zones for isotropic and anisotropic multiblades rotor configurations [PDF]
, 2010 Helicopter ground resonance is an unstable dynamic phenomenon which can lead to the total destruction of the aircraft during take-off or landing phases. The earliest research in this domain was done by Coleman and Feingold around the 60's decade.
Leonardo Sanches +9 more
core +1 more source
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016 Elastic-damping supports are widely spread in the design of aviation gas-turbine engines. These supports include elastic elements of the squirrel cage type.
S. A. Degtyarev +2 more
doaj +1 more source
Modal Testing of Rotors with Fluid Interaction
International Journal of Rotating Machinery, 1995 Modal testing of rotating structures has specific aspects, and it requires a specialized approach. Classical modal testing when applied to active (rotating) structures does not provide complete results.
Agnes Muszynska
doaj +1 more source
The rotor dynamics of reeling machinery
Applied Mathematical Modelling, 1999 Wide-faced rotors for high-speed reeling operations such as those employed in paper manufacture, printing, coating and laminating are considered, and the torsional behaviour of these units is investigated. Modeling, simulation and analysis techniques are involved enabling the prediction of the torsional vibrational signature of high-speed assemblies ...
Bartlett, H., Whalley, R.
openaire +1 more source