Results 11 to 20 of about 302,661 (226)
Dynamic behaviour of oil lubricated journal bearings [PDF]
, 1983 This thesis is concerned with the dynamic behaviour of oil lubricated journal bearings and particularly with the small vibrations about the equilibrium position known as 'oil whirl'.
Gardner, Mark Thomas
core +7 more sources
On the Instability Threshold of Journal Bearing Supported Rotors
International Journal of Rotating Machinery, 2014 Journal bearing supported rotors present two kinds of self-excited vibrations: oil-whirl and oil-whip. The first one is commonly masked by the rotor unbalance, hence being rarely associated with instability problems.
Ricardo Ugliara Mendes +1 more
doaj +1 more source
Induced Unbalance as a Method for Improving the Dynamic Stability of High-Speed Turbochargers
International Journal of Rotating Machinery, 2011 The high-speed diesel engine turbocharger is known to have subsynchronous vibrations for a wide speed range. The bearing fluid-film instability is the main source of the vibration.
R. Gordon Kirk, Ali A. Alsaeed
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Analysis of the Instability Phenomena Caused by Steam in High-Pressure Turbines
Shock and Vibration, 2011 Instability phenomena in steam turbines may happen as a consequence of certain characteristics of the steam flow as well as of the mechanical and geometrical properties of the seals.
Paolo Pennacchi, Andrea Vania
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Dynamic stability of herringbone-grooved journal gas bearing
Nihon Kikai Gakkai ronbunshu, 2014 As the herringbone-grooved journal gas bearing can rotate silently at high speed with low friction, and moreover it can be small-sized, it is used a lot in the fields such as information appliances.
Katsuhisa FUJITA, Yusuke KIRITANI
doaj +1 more source
Asymptotic inference for nearly unstable AR(p) processes [PDF]
, 1999 In this paper nearly unstable AR( p) processes (in other words, models with characteristic roots near the unit circle) are studied. Our main aim is to describe the asymptotic behavior of the least-squares estimators of the coefficients.
van Zuijlen, Martien C. A. +2 more
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Applied SciencesAircraft configurations with propellers have been drawing more attention in recent times, partly due to new propulsion concepts based on hydrogen fuel cells and electric motors.
Christopher Koch +4 more
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A numerical study on active control for tiltrotor whirl flutter stability augmentation [PDF]
, 2004 The use of active control to augment whirl flutter stability of tiltrotor aircraft is studied by means of a multibody simulation. The numerical model is based on a 1/5 scale semi-span aeroelastic wind tunnel model of a generic tiltrotor concept and ...
Gourinat, Yves +4 more
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FEBS Open Bio, EarlyView.We describe detailed protocols for the purification and preparation of Marchantia polymorpha Auxin Response Factor 2 (MpARF2). This protein is fused to an MBP solubility tag and an mNG fluorescent tag and is purified from Escherichia coli. The presented procedures make it possible to study MpARF2 assemblies, which could arise from phase separation ...
Bas Janssen +5 more
wiley +1 more source
Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif +17 more
wiley +1 more source