... to take full advantage of the method. 03 05 2011 07 05 2011 09 01 2012 09 01 2012 blades damping discs (structures) fatigue friction mechanical contact shock absorbers torsion turbines vibrations The availability of advanced linear finite element codes...

... experimental results are given, which have fully confirmed the analytical formulas. friction mechanical contact polynomials rotors seals (stoppers) Rubbing often occurs in rotating machines, due to tight seal clearance, changes in alignment condition, high unbalance response, etc. For many rubs...

...) mechanical contact vibrations In this paper a new model reduction method for the analysis of nonlinear vibrations in structures with contact interfaces is developed. The intention is to create a simple and effective modification of the FRF matrix method. The method allows calculation of the high...

... analysis Galerkin method iterative methods mechanical contact reduced order systems steam turbines thermal stresses time-domain analysis vibrations The rotor blades of a low pressure (LP) steam turbine stage are subjected to high static and dynamic loads during operation. The static loads...

... crack initiation and ultimately, to failures. failure (mechanical) fatigue finite element analysis gas turbines mechanical contact 14 04 2009 07 05 2009 30 03 2010 30 03 2010 2010 American Society of Mechanical Engineers ...

... . 10.1016/j.jsv.2006.02.009 18 04 2008 06 05 2008 30 09 2009 friction mechanical contact turbomachinery wear One of the most important sources of nonlinearities in turbine is due to contact with friction at the interfaces. These nonlinearities often have a positive...

... 2008 13 07 2009 gears mechanical contact valves As valve train designs are required to meet the ever higher demands of the market, individual component optimization in the context of overall valve train system optimization becomes crucial to producing the required system...

... in this paper gives cam designers an easy way to adjust the maximum forward or backward acceleration to prevent these problems. cams (mechanical) design engineering mechanical contact wear cam acceleration cams cam wear cam profile follower jump 18 06 2008 30 06 2008 12 02...

... 14 04 2008 30 12 2008 blades damping discs (structures) engines finite element analysis friction mechanical contact sensitivity analysis Cameron , T. M. , and Griffin , J. H. , 1989 , “ An Alternating Frequency/Time Domain Method for Calculating Steady...

... 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...

... assembling blades damping engines fasteners friction iterative methods mechanical contact surface roughness turbines vibrations To prevent low pressure (LP) steam turbine blades from high cyclic fatigue (HCF) failures, caused either by harmonic or by nonengine excitation such as flutter...

... blisc with underplatform dampers are provided. blades discs (structures) finite element analysis friction mechanical contact sensitivity analysis shock absorbers stochastic processes vibrations The cases of two most influential UPD parameters are considered here: (i) damper mass (Fig...

... analysis friction mechanical contact shock absorbers Due to the high modal density of natural frequencies of realistic bladed disks and of a broad spectrum of aerodynamic excitation forces, complete prevention of the occurrence of resonance regimes is not feasible. Hence, special devices...

... 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...

... March 2004 09 02 2005 engines ball bearings friction lubrication thermal properties heat transfer mechanical contact rotation The study reported here is concerned with friction levels in the crankshaft main bearings, and specifically, the interaction between friction...

.... Manuscript received by IGTI, Dec. 2000, final revision, Mar. 2001. Associate Editor: R. Natole. 04 June 2001 01 Dec 2000 01 Mar 2001 24 09 2002 stators aerospace engines sliding friction damping mechanical contact mechanical testing parameter estimation modelling...

.... 1999; final revision received by ASME Headquarters Feb. 2000. Associate Editor: D. Wisler. 08 May 2000 01 11 1999 01 02 2000 26 03 2002 mechanical contact fatigue cracks stress analysis failure (mechanical) gas turbines...

... Ignition Engines ,” Combust. Sci. Technol. , 109 , pp. 205 – 226 . Min, K., and Cheng, W. K., 1996, “Oil Layer as a Source of Hydrocarbon Emissions in SI Engine,” submitted to the Fall ASME ICE Conference, October. engines lubrication interface phenomena sliding friction mechanical contact...

... to reduce the maximum normalized relative misalignment between seal faces and, therefore, eliminate seal face contact. Clearance is measured by proximity probes and varied through a pneumatic adjustment mechanism. Contact is determined phenomenologically from pattern recognition of probe signals...

... compressors machining machine tools mechanical contact numerical control reliability 01 January 1999 18 September 1999 Contributed by the Gas Turbine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES...