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Journal Articles

A New Mistuning Identification Method Based on the Subset of Nominal System Modes Method

Christian U. Waldherr, Patrick Buchwald, Damian M. Vogt

J. Eng. Gas Turbines Power. February 2020, 142(2): 021016.

Paper No: GTP-19-1474

DOI: https://doi.org/10.1115/1.4045517

Published Online: January 16, 2020

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Topics: Blades, Compressors, Eigenvalues, Errors, Mode shapes, Noise (Sound), Probability, Resonance, Stiffness, Traveling waves

Journal Articles

Prediction of Low-Engine-Order Excitation Due to a Nonsymmetrical Nozzle Ring in a Radial Turbine by Means of the Nonlinear Harmonic Approach

Nikola Kovachev, Tobias R. Müller, Christian U. Waldherr, Damian M. Vogt

J. Eng. Gas Turbines Power. December 2019, 141(12): 121004.

Paper No: GTP-19-1502

DOI: https://doi.org/10.1115/1.4045152

Published Online: November 8, 2019

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Topics: Blades, Excitation, Flow (Dynamics), Turbines, Vibration, Pressure, Engines, Nozzles, Symmetry (Physics)

Proceedings Papers

A New Mistuning Identification Method Based on the Subset of Nominal System Modes Method

Christian U. Waldherr, Patrick Buchwald, Damian M. Vogt

Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT35A024, June 17–21, 2019

Paper No: GT2019-91702

DOI: https://doi.org/10.1115/GT2019-91702

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Topics: Compressors, Databases, Degrees of freedom, Finite element analysis, Finite element model, Mode shapes, Noise (Sound), Particle spin, Periodic structures, Rotation

Proceedings Papers

Prediction of Low-Engine-Order Excitation due to a Non-Symmetrical Nozzle Ring in a Radial Turbine by Means of the Nonlinear Harmonic Approach

Nikola Kovachev, Tobias R. Müller, Christian U. Waldherr, Damian M. Vogt

Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT36A003, June 17–21, 2019

Paper No: GT2019-90366

DOI: https://doi.org/10.1115/GT2019-90366

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Topics: Engines, Excitation, Nozzles, Symmetry (Physics), Turbines, Blades, High cycle fatigue, Inflow, Vibration, Annulus

Journal Articles

An Extension of the Classical Subset of Nominal Modes Method for the Model Order Reduction of Gyroscopic Systems

Christian U. Waldherr, Damian M. Vogt

J. Eng. Gas Turbines Power. May 2019, 141(5): 052501.

Paper No: GTP-18-1440

DOI: https://doi.org/10.1115/1.4041117

Published Online: December 7, 2018

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Topics: Blades, Boundary-value problems, Coriolis force, Modeling, Resonance, Compressors, Rotation, Errors, Displacement, Stiffness

Journal Articles

Prediction of Aerodynamically Induced Blade Vibrations in a Radial Turbine Rotor Using the Nonlinear Harmonic Approach

Nikola Kovachev, Christian U. Waldherr, Jürgen F. Mayer, Damian M. Vogt

J. Eng. Gas Turbines Power. February 2019, 141(2): 021007.

Paper No: GTP-18-1346

DOI: https://doi.org/10.1115/1.4040856

Published Online: September 21, 2018

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Topics: Blades, Damping, Excitation, Rotors, Simulation, Turbines, Vibration, Pressure, Resonance, Computational fluid dynamics

Proceedings Papers

An Extension of the Classical Subset of Nominal Modes Method for the Model Order Reduction of Gyroscopic Systems

Christian U. Waldherr, Damian M. Vogt

Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT35A036, June 11–15, 2018

Paper No: GT2018-76742

DOI: https://doi.org/10.1115/GT2018-76742

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Topics: Blades, Boundary-value problems, Computation, Coriolis force, Design, Disks, Finite element methods, Machinery, Modeling, Particle spin

Proceedings Papers

Prediction of Aerodynamically Induced Blade Vibrations in a Radial Turbine Rotor Using the Nonlinear Harmonic Approach

Nikola Kovachev, Christian U. Waldherr, Jürgen F. Mayer, Damian M. Vogt

Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT36A020, June 11–15, 2018

Paper No: GT2018-76814

DOI: https://doi.org/10.1115/GT2018-76814

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Topics: Blades, Rotors, Turbines, Vibration, Computational fluid dynamics, Damping, Engineering simulation, Excitation, Fluid structure interaction, High cycle fatigue

Proceedings Papers

A Comparison of Two Reduced Order Methods for Probabilistic Mistuning Investigations

Christian U. Waldherr, Damian M. Vogt

Proc. ASME. GTINDIA2017, Volume 2: Structures and Dynamics; Renewable Energy (Solar, Wind); Inlets and Exhausts; Emerging Technologies (Hybrid Electric Propulsion, UAV, ...); GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery, V002T05A014, December 7–8, 2017

Paper No: GTINDIA2017-4684

DOI: https://doi.org/10.1115/GTINDIA2017-4684

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Topics: Computation, Design engineering, Finite element model, Machinery, Manufacturing, Periodic structures, Shells, Simulation, Structural dynamics, Turbines

Journal citation

NARROW

A New Mistuning Identification Method Based on the Subset of Nominal System Modes Method

Prediction of Low-Engine-Order Excitation Due to a Nonsymmetrical Nozzle Ring in a Radial Turbine by Means of the Nonlinear Harmonic Approach

A New Mistuning Identification Method Based on the Subset of Nominal System Modes Method

Prediction of Low-Engine-Order Excitation due to a Non-Symmetrical Nozzle Ring in a Radial Turbine by Means of the Nonlinear Harmonic Approach

An Extension of the Classical Subset of Nominal Modes Method for the Model Order Reduction of Gyroscopic Systems

Prediction of Aerodynamically Induced Blade Vibrations in a Radial Turbine Rotor Using the Nonlinear Harmonic Approach

An Extension of the Classical Subset of Nominal Modes Method for the Model Order Reduction of Gyroscopic Systems

Prediction of Aerodynamically Induced Blade Vibrations in a Radial Turbine Rotor Using the Nonlinear Harmonic Approach

A Comparison of Two Reduced Order Methods for Probabilistic Mistuning Investigations

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