Results 11 to 20 of about 3,523,664 (305)
Nonlinear dynamics of a Jeffcott rotor with torsional deformations and rotor-stator contact
International Journal of Non-Linear Mechanics, 2017 The dynamics of a modified Jeffcott rotor is studied, including rotor torsional deformation and rotor-stator contact. Conditions are studied under which the rotor undergoes either forward synchronous whirling or self-excited backward whirling motions ...
N. Vlajic, A. Champneys, B. Balachandran
semanticscholar +3 more sources
Dynamics and efficiency of Brownian rotors [PDF]
The Journal of Chemical Physics, 2008 Brownian rotors play an important role in biological systems and in future nanotechnological applications. However the mechanisms determining their dynamics, efficiency, and performance remain to be characterized. Here the F0 portion of the F-ATP synthase is considered as a paradigm of the Brownian rotor.
Bauer, W. R., Nadler, W.
openaire +4 more sources
Dynamics of Anisotropically Supported Rotors
International Journal of Rotating Machinery, 1997 The paper discusses dynamic effects occurring in machinery rotors supported in bearings and pedestals with laterally different characteristics. In the considered rotor model the anisotropy of radial stiffness and tangential (“cross”) stiffness components
Agnes Muszynska +2 more
doaj +1 more source
Friction, 2019 In this paper, a square textured parallel slider is considered for a study to improve the hydrodynamic performance of moving parts. The numerical method is employed for the analysis of a square texture with different bottom profiles: flat, triangle T1 ...
Nilesh D. Hingawe, Skylab P. Bhore
doaj +1 more source
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
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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
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
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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
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
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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