Results 31 to 40 of about 152,300 (313)
Dynamic rotor mode in antiferromagnetic nanoparticles [PDF]
Physical Review B, 2015 We present experimental, numerical, and theoretical evidence for a new mode of antiferromagnetic dynamics in nanoparticles. Elastic neutron scattering experiments on 8 nm particles of hematite display a loss of diffraction intensity with temperature, the intensity vanishing around 150 K.
Lefmann, K. +8 more
openaire +5 more sources
Impact of Heat Treatment on the Rubbing Behavior of Bump-Type Foil Journal Bearing
Tribology OnlineUnder low-speed or start/stop conditions, the rubbing of top foil in foil journal bearing (FJB) prompting the application of heat treatment to improve the rubbing behavior of the foil bearing.
Vishal Mourya, Skylab P. Bhore
doaj +1 more source
Modelling of Shaft Orbiting with 3-D Solid Finite Elements
International Journal of Rotating Machinery, 1999 A 3-D solid finite element model which can include bending, torsional, axial and other motions is proposed to analyse dynamic responses of shafts. For uniform shafts, this model shows consistency with beam theories when bending vibration is examined. For
J. Yu, A. Craggs, A. Mioduchowski
doaj +1 more source
Helicopter Roll-Axis Instabilities induced by Pilot Cyclic Control: A Physical Explanation [PDF]
INCAS Bulletin, 2018 The main objective of this paper is to give a basic understanding of the mechanisms through which pilot cyclic inputs in lateral cyclic interacts with high-order rotor dynamics destabilizing the helicopter roll motion.
Marilena D. PAVEL, Achim IONITA
doaj +1 more source
Coupled flight dynamics and CFD - demonstration for helicopters in shipborne environment [PDF]
, 2017 The development of high-performance computing and computational fluid dynamics methods have evolved to the point where it is possible to simulate complete helicopter configurations with good accuracy.
Barakos, G.N., Crozon, C., Steijl, R.
core +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
Cavitation Effects on the Stability of a Submerged Journal Bearing
International Journal of Rotating Machinery, 2004 A computational procedure for the mechanism of shear between the liquid sublayer and air cavity in the cavitation zone of a submerged journal bearing is presented here. Using the mass conservation principle, Elrod's universal equation is modified to take
Jerzy T. Sawicki, T. V. V. L. N. Rao
doaj +1 more source
Computer program analyzes whirl critical speeds and bearing loads for shafts coupled by nonlinear springs to machine housing [PDF]
, 1969 Computerized method of analysis predicts bearing loads, shaft deflections, and critical speeds for shafts coupled by rolling contact bearings to the machine housing.
Severud, L. K.
core +1 more source
Wake structure and kinematics in the vortex ring state [PDF]
, 2009 High-resolution computational simulations of the vortical wake of a rotor operating both near to and within the vortex ring state have been conducted using Brown's vorticity transport model.
Azuma +10 more
core +1 more source
Advanced Functional Materials, EarlyView.Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana +2 more
wiley +1 more source