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Keywords: blade vibration
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Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A016, June 13–17, 2022
Paper No: GT2022-82208
... the maximum forced response at part-speed conditions. intentional mistuning blade vibration flutter forced response steam turbine Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-82208 APPLICATION...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A006, June 13–17, 2022
Paper No: GT2022-80643
... of the mistuning pattern and the actually machined implementation due to manufacturing deviations. mistuning blade vibration damping Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-80643 MISTUNING...
Proceedings Papers

Proc. ASME. GT2022, Volume 5: Education; Electric Power; Fans and Blowers, V005T10A004, June 13–17, 2022
Paper No: GT2022-80190
... away from the trailing edge. Such behavior may influence the acoustic signature of VS, and, as such, it is to be considered in fan noise modelling. KEYWORDS blade vibration, fan noise, low-speed axial fan, minimal model, Reynolds-averaged Navier-Stokes equation, vortex shedding NOMENCLATURE Latin...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT29A019, June 7–11, 2021
Paper No: GT2021-59283
... is approach for fast estimating damping ratios in the design phase. analyzed in view of both free vibration and forced response. Due Keywords: Mistuning, blade vibration, damping to random blade mistuning resulting from unavoidable inaccuracies in manufacture or material inhomogeneities, NOMENCLATURE...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT29A001, June 7–11, 2021
Paper No: GT2021-02411
... considered test cases there were the measured data. no strain gauges available, therefore proposed method was the only means to study blades vibratory response The data above constitute the set to which various analysis techniques are applied to identify blade vibration frequency, Keywords: blade tip timing...
Topics: Blades, Signals
Proceedings Papers

Proc. ASME. GT2020, Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine, V009T23A003, September 21–25, 2020
Paper No: GT2020-14280
... of 30 mm. Blade vibration monitoring sensors, so called last stage blade tip-timing, were also installed. The blade tip-timing acquisition hardware was used to monitor rotor blades tip amplitude. Due to the obtained experimental data, it was possible to verify the behaviour of the last stage...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A014, September 21–25, 2020
Paper No: GT2020-14753
... ABSTRACT Based on the blade vibration theory of turbomachinery and the basic principle of blade timing systems, a sparse reconstruction model is derived for the tip timing signal under an arbitrary sensor circumferential placement distribution. The proposed approach uses the sparsity of the tip timing...
Topics: Blades, Vibration
Proceedings Papers

Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1333-1344, June 11–15, 2012
Paper No: GT2012-69789
.... The high efficiency and accuracy of the optimization algorithms is assessed in comparison with computationally very demanding exhaustive search results. Keywords: blade damping, damping optimization, intentional mistuning, bladed disk, blade vibration. NOMENCLATURE c = damping coefficient of each blade...
Proceedings Papers

Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1345-1353, June 11–15, 2012
Paper No: GT2012-69797
... that the optimum achieved without considering such uncertainty/variability is robust with respect to it. Keywords: blade damping, damping optimization, intentional mistuning, bladed disk, blade vibration. NOMENCLATURE BD/BB = denotes Blade-Disk or Blade-Blade dampers c = damping coefficient of each blade without...
Proceedings Papers

Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1133-1142, June 11–15, 2012
Paper No: GT2012-69760
... compressor impeller blade vibration strain gauges laser scanning vibrometer 1 Copyright © 2012 by ASME Proceedings of ASME Turbo Expo 2012 GT2012 June 11-15, 2012, Copenhagen, Denmark GT2012-69760 EXPERIMENTAL AND NUMERICAL INVESTIGATIONS ON A ROTATING CENTRIFUGAL COMPRESSOR Patricio Almeida...
Proceedings Papers

Proc. ASME. GT2010, Volume 5: Industrial and Cogeneration; Microturbines and Small Turbomachinery; Oil and Gas Applications; Wind Turbine Technology, 777-787, June 14–18, 2010
Paper No: GT2010-23745
... and a driven industrial compressor are used to illustrate how the method is used. Blade Vibration Failure Analysis High Cycle Fatigue Compressor Surge 1 Copyright © 2010 by ASME 3URFHHGLQJV RI WKH $60( 7XUERSR3RZHU IRU /DQG 6HD DQG $LU *7 -XQHODVJRZ 8. *7 ,038/6( 7(67,1126,08/$7,21 722...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 649-658, June 14–18, 2010
Paper No: GT2010-22736
...) results. Blade Vibration Fokker-Planck equation Finite difference method Mistuning Reliability Friction Damper Proceedings of GT2010 ASME Turbo Expo 2010: Power for Land, Sea and Air June 14-18, 2010, Glasgow, UK GT2010-22736 1 Copyright 2010 by ASME RESPONSE STATISTICS AND RELIABILITY...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 981-994, June 14–18, 2010
Paper No: GT2010-23062
... of the number of blades on the different stages, damping in the system, stage coupling strength, etc are discussed in details. mistuning amplification factor optimization bladed disk multi stage models modal optimization blade vibration Proceedings of ASME Turbo Expo 2010: Power for Land, Sea...
Proceedings Papers

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 323-332, June 8–12, 2009
Paper No: GT2009-59580
... stochastic modeling random matrices blade vibration I e h in 7 9 9 e approach and a local modeling of the interface. Then, both model and data uncertainties are introduced in this model using the nonparametric stochastic that indic mistuned frequenci blade fre a higher a Keywo stochastic INTROD The e...
Proceedings Papers

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 1341-1350, June 9–13, 2008
Paper No: GT2008-50736
... numerically to examine some features of chaotic and stochastic response of nonlinear rotor systems. Fokker-Planck equation Path integral Finite element method Chaos Reliability Nonlinear stochastic dynamics Blade vibration Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008...
Proceedings Papers

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 611-616, June 9–13, 2008
Paper No: GT2008-51446
... forced response as compared to the tuned system. These findings were obtained on both single-degree-of-freedom per blade disk models and a reduced order model of a blisk. blade damping damping optimization intentional mistuning bladed disk blade vibration Proceedings of ASME Turbo Expo 2008...
Proceedings Papers

Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 601-609, June 9–13, 2008
Paper No: GT2008-51439
... optimization intentional mistuning bladed disk blade vibration Proceedings of ASME Turbo Expo 2008: Power for Land, Sea and Air GT2008 June 9-13, 2008, Berlin, Germany G D the disk. It is thus desired to find the arrangement of these A and B blades (A/B pattern) that leads to the smallest 99th percentile...
Proceedings Papers

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 351-365, May 14–17, 2007
Paper No: GT2007-27353
... convergence to one of the many local maxima known to often exist. Keywords: mistuning, blade vibration, maximum amplitude, optimization, mode shape. INTRODUCTION Blade-to-blade variations in their geometrical and/or material properties do occur as a result of both the manufacturing process and in-service wear...
Proceedings Papers

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 229-238, May 14–17, 2007
Paper No: GT2007-28102
... to Gaussian white noise excitation as an illustrative example. Fokker-Planck equation Path integral Finite element method Bifurcation Nonlinear stochastic dynamics Blade vibration parameters change. The finite element (FE) scheme is used to cycles, chaotic motion, quasi-periodic, sub, super...
Proceedings Papers

Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 343-349, May 14–17, 2007
Paper No: GT2007-27352
... of Unintentional Mistuning, Journal of Engineering for Gas Turbines and Power, 125, No. 1, pp. 131-140. 7 mistuning bladed disk blade vibration perturbation method intentional mistuning This paper focuses on the formulation and validation of a novel perturbation method for the prediction...
Topics: Blades, Disks