... 04 2011 27 10 2011 27 10 2011 blades casting crystal orientation elastic constants fatigue finite element analysis geometry nickel turbines Single crystal nickel-based materials, such as CMSX-4 are commonly used for turbine blade applications due to their superior...

... of GFBs. damping elastic constants machine bearings net structures (mechanical) rotors stainless steel 12 04 2011 17 04 2011 27 10 2011 27 10 2011 2012 American Society of Mechanical Engineers ...

... damping elastic constants impact (mechanical) machine bearings rotors stress analysis turbomachinery The metal mesh foil bearing (MMFB) is a novel gas bearing technology that aims to provide reliable support in microturbomachinery ( < 0.5   MW ) operating at high speed...

... of the interfacial fracture toughness for the given pair of materials. The results of DFT calculations of elastic constants and moduli, surface energy and ideal work of adhesion, fracture toughness and interfacial fracture toughness are presented and discussed in this section for single crystals of several...

... model was developed by Scharrer ( 5 ). aerodynamics damping elastic constants flow instability Mach number rotors sealing materials transfer functions 2010 American Society of Mechanical Engineers ...

... 03 2009 25 03 2009 07 06 2010 07 06 2010 damping elastic constants machine bearings matrix algebra rotors stochastic processes uncertainty uncertain rotor uncertain bearings rotordynamics nonparametric stochastic modeling random matrices Notwithstanding...

... ball bearings damping elastic constants Navier-Stokes equations rotors Lund ( 1 ) noted that tilting-pad journal bearings (TPJBs) eliminate oil whip instabilities because they direct the load component of each pad through the journal center, if the effects of pad inertia and pivot friction...

.... Acoust. 0739-3717 10.1115/1.2930343 , 115 , pp. 264 – 270 . 03 04 2008 10 04 2008 13 10 2008 computational fluid dynamics damping dynamic testing elastic constants machine bearings rotors Tilting-pad (TP) journal bearings have long been the bearing of choice...

... as the load increases. Measured results also show a whirl frequency ratio near 0.36 at no-load conditions; however, a zero whirl frequency ratio was obtained at all loaded conditions, indicating an inherently stable bearing from a rotordynamics viewpoint. aerodynamics damping elastic constants finite...

.... However, in recent work by one of the authors and his colleagues ( 2 ), it became evident experimentally that misalignment, in particular, angular misalignment, has significant effects on the stability of journal bearings. damping elastic constants finite difference methods machine bearings...

... elastic constants Hilbert transforms parameter estimation shock absorbers vibrations Traditional rotor-bearing systems use oil based bearing support dampers to mitigate imbalance response and rotordynamic stability ( 1 2 ). With a careful design, squeeze film dampers (SFDs) can provide large...

... bearings is presented. A simple example highlights the needs of nonlinear simulations in order to predict dynamic performance in oil-free turbomachinery. 07 07 2006 27 03 2007 26 12 2007 rotors aerodynamics machine bearings turbomachinery elastic constants damping numerical...

... 2007 27 04 2007 foils machine bearings finite element analysis springs (mechanical) elastic constants shafts friction A bump-type foil bearing is a gas bearing constituted of one or several corrugated sheets covered by one or several smooth sheets. Over the past 20 years...

...Dara Childs 03 01 2007 05 01 2007 seals (stoppers) gas turbines elastic constants confined flow The authors’ predictions that choked flow in an annular gas seal is likely to produce negative direct stiffness was recently borne out in tests conducted...

... performance makes them desirable for the envisioned oil-free applications in high speed micro-turbomachinery. 14 04 2006 02 01 2007 rotors hydrostatics machine bearings turbomachinery elastic constants damping mechanical testing bending gas bearings rotordynamics oil-free...

... effect. This characteristic has never been depicted before. 29 05 2006 30 08 2006 seals (stoppers) flow instability friction channel flow rotors Mach number numerical analysis elastic constants compressible flow Annular gas seals usually work under weak or mild subsonic...

...-4795 ,” 126 ( 4 ), pp. 888 – 894 . 13 06 2006 01 08 2006 magnetic forces magnetic bearings parameter estimation magnetic flux magnetic variables measurement damping elastic constants testing One of the most attractive features of mechatronics is its ability...

... for the four normal loads. The results of the measurements will be shown in Sec. 4 where they will be compared with the predictions. 14 06 2006 06 07 2006 friction shock absorbers mechanical contact elastic constants vibrations blades Friction dampers are used in gas...

..., the dependence of crack propagation resistance on crystallographic orientation arises from the anisotropy of (i) elastic constants, (ii) plastic deformation (or slip), and (iii) the weakest fracture planes (e.g., cleavage planes). Because of the triaxial stress state at the notch tips, many slip systems...

... foils machine bearings turbomachinery damping elastic constants mechanical testing elastic deformation spot welding Gas foil bearing technology has made significant progress during the last 30 years . Foil bearings (FBs) fulfill most...