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Keywords: elastic constants
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Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2012, 134(1): 012501.
Published Online: October 27, 2011
.... The Secondary angle reference location ψ = 0 deg is defined when the crystallographic direction [100] is in alignment with the X axis of the turbine blade coordinate system. blades casting crystal orientation elastic constants fatigue finite element analysis geometry nickel turbines...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2012, 134(1): 012502.
Published Online: October 27, 2011
... damping elastic constants machine bearings net structures (mechanical) rotors stainless steel Gas foil bearings (GFBs) have been considered as alternatives to traditional bearings due to increasing needs for high speed and temperature operation with high efficiency. Typically, multiple leaves...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2011, 133(11): 112501.
Published Online: May 13, 2011
.../j.triboint.2007.12.009 24 04 2010 06 05 2010 13 05 2011 13 05 2011 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...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2011, 133(4): 042102.
Published Online: November 22, 2010
... in the (110) orientation. 22 04 2010 27 04 2010 22 11 2010 22 11 2010 adhesion brittleness density functional theory elastic constants fracture mechanics fracture toughness gas turbines protective coatings shear modulus transition metals Young's modulus Erosion...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2010, 132(11): 112504.
Published Online: August 11, 2010
... 15,200 rpm) aerodynamics damping elastic constants flow instability Mach number rotors sealing materials transfer functions Labyrinth seals are used widely in turbomachinery to reduce leakage. However, they are known to cause lateral rotordynamic instabilities. A tooth-on-stator...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2010, 132(9): 092501.
Published Online: June 7, 2010
... in the asymmetric case in a frame of reference fixed with the shaft segment considered. Further, the bending deformations will be assumed to take place within the rotating frame; e.g., see Ref. 15 . 24 03 2009 25 03 2009 07 06 2010 07 06 2010 damping elastic constants machine...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2009, 131(6): 062502.
Published Online: July 17, 2009
... friction are neglected. Because of this characteristic, TPJBs are the first choice for high-speed turbomachinery. ball bearings damping elastic constants Navier-Stokes equations rotors 07 11 2008 13 11 2008 17 07 2009 Power loss at 1896 kPa (275 psi) Two...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2009, 131(1): 012507.
Published Online: October 13, 2008
... elastic constants machine bearings rotors Tilting-pad (TP) journal bearings have long been the bearing of choice for high-speed turbomachines. The inherent stability of the bearing gives it substantial advantages over fixed-arc journal bearings. Figure 1 illustrates the “rocker-pivot” pad TP...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2008, 130(5): 052501.
Published Online: June 5, 2008
... 2007 05 06 2008 aerodynamics damping elastic constants finite element analysis laminar flow machine bearings mechanical stability As illustrated in Fig. 1 , pressure-dam bearings are used in many types of rotating machinery because of their higher threshold speed...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 2008, 130(4): 042501.
Published Online: April 9, 2008
... a significant effect on the bearings’ dynamic characteristics. 21 05 2007 17 06 2007 09 04 2008 damping elastic constants finite difference methods machine bearings mechanical contact The effect of misalignment on the journal bearing dynamic characteristics has attracted very...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2008, 130(3): 032503.
Published Online: April 3, 2008
... wire mesh damper materials for stiffness and damping was conducted by Ertas et al. ( 5 ). damping elastic constants Hilbert transforms parameter estimation shock absorbers vibrations 2008 American Society of Mechanical Engineers ...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2008, 130(1): 012503.
Published Online: December 26, 2007
... decades and find increasing applications whenever elevated speeds, low loads, and a high degree of accuracy are necessary. foil bearings rotor dynamics stability gas lubrication rotors aerodynamics machine bearings turbomachinery elastic constants damping numerical...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2007, 129(4): 1047–1057.
Published Online: April 27, 2007
... 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 considerable advancements have...
Journal Articles
Article Type: Discussions
J. Eng. Gas Turbines Power. October 2007, 129(4): 1143.
Published Online: January 5, 2007
... the authors predict for this seal and the test conditions provided above? Additional test results are available for the seal in ( 2 ). seals (stoppers) gas turbines elastic constants confined flow 03 01 2007 05 01 2007 2007 American Society of Mechanical...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2007, 129(4): 1020–1027.
Published Online: January 2, 2007
... Bearings: Analysis and Experimental Validation ,” ASME J. Tribol. 0742-4787 10.1115/1.2194918 , 128 , pp. 551 – 558 . 14 04 2006 02 01 2007 rotors hydrostatics machine bearings turbomachinery elastic constants damping mechanical testing bending gas bearings...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2007, 129(4): 1028–1034.
Published Online: August 30, 2006
... can occur only at the exit section of the parallel channel. seals (stoppers) flow instability friction channel flow rotors Mach number numerical analysis elastic constants compressible flow 2007 American Society of Mechanical Engineers ...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2007, 129(2): 503–510.
Published Online: August 1, 2006
... estimation magnetic flux magnetic variables measurement damping elastic constants testing One of the most attractive features of mechatronics is its ability to render products “smart.” Such a smart machine makes use of the built-in active control to incorporate additional or higher performance...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2007, 129(2): 511–521.
Published Online: July 6, 2006
... force 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...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2005, 127(3): 629–637.
Published Online: June 24, 2005
..., 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...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2006, 128(3): 653–660.
Published Online: March 1, 2004
... 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...