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Journal Articles

Friction Saturated Limit Cycle Oscillations—Test Rig Design and Validation of Numerical Prediction Methods

Stefan Schwarz, Johannes Reil, Johann Gross, Andreas Hartung, David Rittinger, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2024, 146(5): 051020.
Paper No: GTP-23-1367
https://doi.org/10.1115/1.4063769
Published Online: December 26, 2023
View Article titled, Friction Saturated Limit Cycle Oscillations—Test Rig Design and Validation of Numerical Prediction Methods
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Topics: Damping, Design, Feedback, Friction, Limit cycles, Oscillations, Simulation, Excitation systems, Excitation
Proceedings Papers

Friction Saturated Limit Cycle Oscillations – Test Rig Design and Validation of Numerical Prediction Methods

Stefan Schwarz, Johannes Reil, Johann Gross, Andreas Hartung, David Rittinger, Malte Krack
Proc. ASME. GT2023, Volume 11B: Structures and Dynamics — Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V11BT27A007, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-101671
https://doi.org/10.1115/GT2023-101671
View Paper titled, Friction Saturated Limit Cycle Oscillations – Test Rig Design and Validation of Numerical Prediction Methods
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Topics: Design, Friction, Limit cycles, Oscillations
Proceedings Papers

Validation of New Numerical Analysis Tools for Nonlinear Forced Response in Anisotropy-Mistuned Bladed Disks With Friction Joints

Adam Koscso, Andreas Hartung, E. P. Petrov
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A014, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82040
https://doi.org/10.1115/GT2022-82040
View Paper titled, Validation of New Numerical Analysis Tools for Nonlinear Forced Response in Anisotropy-Mistuned Bladed Disks With Friction Joints
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Topics: Anisotropy, Disks, Friction, Numerical analysis, Blades, Aircraft engines, Computational methods, Crystals, Dampers, Excitation
Proceedings Papers

The Impact of Excitation and Mode Shape on Non-Linear Blade Vibrations

Johannes Linhard, Andreas Hartung, Stefan Schwarz, Hans-Peter Hackenberg, Mateusz Sienko
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A013, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14670
https://doi.org/10.1115/GT2020-14670
View Paper titled, The Impact of Excitation and Mode Shape on Non-Linear Blade Vibrations
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Topics: Blades, Excitation, Mode shapes, Vibration
Journal Articles

Validation of a Turbine Blade Component Test With Frictional Contacts by Phase-Locked-Loop and Force-Controlled Measurements

Stefan Schwarz, Lukas Kohlmann, Andreas Hartung, Johann Gross, Maren Scheel, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2020, 142(5): 051006.
Paper No: GTP-19-1376
https://doi.org/10.1115/1.4044772
Published Online: March 27, 2020
View Article titled, Validation of a Turbine Blade Component Test With Frictional Contacts by Phase-Locked-Loop and Force-Controlled Measurements
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Topics: Blades, Damping, Excitation, Modal analysis, Turbine blades, Frequency response, Control equipment, Force measurement, Friction, Vibration
Proceedings Papers

Validation of a Turbine Blade Component Test With Frictional Contacts by Phase-Locked-Loop and Force-Controlled Measurements

Stefan Schwarz, Lukas Kohlmann, Andreas Hartung, Johann Gross, Maren Scheel, Malte Krack
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT35A019, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91374
https://doi.org/10.1115/GT2019-91374
View Paper titled, Validation of a Turbine Blade Component Test With Frictional Contacts by Phase-Locked-Loop and Force-Controlled Measurements
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Topics: Turbine blades, Blades, Frequency response, Chain, Control equipment, Damping, Excitation, Feedback, Force measurement, Friction
Journal Articles

Rotational Speed-Dependent Contact Formulation for Nonlinear Blade Dynamics Prediction

Torsten Heinze, Lars Panning-von Scheidt, Jörg Wallaschek, Andreas Hartung
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2019, 141(4): 042503.
Paper No: GTP-18-1332
https://doi.org/10.1115/1.4040843
Published Online: December 5, 2018
View Article titled, Rotational Speed-Dependent Contact Formulation for Nonlinear Blade Dynamics Prediction
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Topics: Blades, Disks, Dynamics (Mechanics), Equations of motion, Frequency response, Friction, Interpolation, Stiffness, Errors, Computation
Journal Articles

Rig and Engine Validation of the Nonlinear Forced Response Analysis Performed by the Tool OrAgL

Andreas Hartung, Hans-Peter Hackenberg, Malte Krack, Johann Gross, Torsten Heinze, Lars Panning-von Scheidt
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2019, 141(2): 021019.
Paper No: GTP-18-1414
https://doi.org/10.1115/1.4041160
Published Online: October 4, 2018
View Article titled, Rig and Engine Validation of the Nonlinear Forced Response Analysis Performed by the Tool OrAgL
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Topics: Blades, Engines, Excitation, Resonance, Vibration, Dampers, Simulation, Friction, Disks
Proceedings Papers

Rig and Engine Validation of the Non-Linear Forced Response Analysis Performed by the Tool OrAgL

Andreas Hartung, Hans-Peter Hackenberg, Malte Krack, Johann Gross, Torsten Heinze, Lars Panning-von Scheidt
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT35A003, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75186
https://doi.org/10.1115/GT2018-75186
View Paper titled, Rig and Engine Validation of the Non-Linear Forced Response Analysis Performed by the Tool OrAgL
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Topics: Engines, Friction, Simulation, Blades, Dampers, Disks, Modeling, Nonlinear vibration, Stiffness, Temperature
Proceedings Papers

A Study of Dynamic Phenomena Caused by Impulse Mistuning in Case of Self-Excitation

Peter Müller, Andreas Hartung, Hans-Peter Hackenberg
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT35A004, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75188
https://doi.org/10.1115/GT2018-75188
View Paper titled, A Study of Dynamic Phenomena Caused by Impulse Mistuning in Case of Self-Excitation
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Topics: Excitation, Impulse (Physics), Damping, Vibration, Blades, High cycle fatigue, Energy transformation, Flutter (Aerodynamics), Friction, Stress
Proceedings Papers

Rotational Speed-Dependent Contact Formulation for Nonlinear Blade Dynamics Prediction

Torsten Heinze, Lars Panning-von Scheidt, Jörg Wallaschek, Andreas Hartung
Proc. ASME. GT2018, Volume 7C: Structures and Dynamics, V07CT35A006, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75290
https://doi.org/10.1115/GT2018-75290
View Paper titled, Rotational Speed-Dependent Contact Formulation for Nonlinear Blade Dynamics Prediction
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Topics: Blades, Dynamics (Mechanics), Algorithms, Approximation, Computation, Disks, Errors, Frequency response, Friction, Stiffness
Proceedings Papers

Nodal Diameter-Dependent Modal Damping Method for Nonlinear Blade Dynamics Prediction Considering Variable Rotational Speed

Torsten Heinze, Lars Panning-von Scheidt, Jörg Wallaschek, Andreas Hartung
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT35A018, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63999
https://doi.org/10.1115/GT2017-63999
View Paper titled, Nodal Diameter-Dependent Modal Damping Method for Nonlinear Blade Dynamics Prediction Considering Variable Rotational Speed
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Topics: Blades, Damping, Dynamics (Mechanics), Degrees of freedom, Excitation, Disks, Equations of motion, Friction, Vibration analysis
Journal Articles

Impulse Mistuning of Blades and Vanes

Andreas Hartung, Ulrich Retze, Hans-Peter Hackenberg
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2017, 139(7): 072502.
Paper No: GTP-16-1451
https://doi.org/10.1115/1.4035594
Published Online: February 14, 2017
View Article titled, Impulse Mistuning of Blades and Vanes
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Topics: Blades, Dampers, Damping, Impulse (Physics), Friction, Excitation, Energy dissipation
Journal Articles

A Taylor Series Expansion Approach for Nonlinear Blade Forced Response Prediction Considering Variable Rotational Speed

Torsten Heinze, Lars Panning-von Scheidt, Jörg Wallaschek, Andreas Hartung
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2017, 139(6): 062503.
Paper No: GTP-16-1466
https://doi.org/10.1115/1.4035286
Published Online: January 24, 2017
View Article titled, A Taylor Series Expansion Approach for Nonlinear Blade Forced Response Prediction Considering Variable Rotational Speed
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Topics: Blades, Condensation, Disks, Eigenvalues, Engines, Equations of motion, Interpolation, Stiffness, Damping, Dimensions
Proceedings Papers

A Taylor Series Expansion Approach for Nonlinear Blade Forced Response Prediction Considering Variable Rotational Speed

Torsten Heinze, Lars Panning-von Scheidt, Jörg Wallaschek, Andreas Hartung
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A005, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56375
https://doi.org/10.1115/GT2016-56375
View Paper titled, A Taylor Series Expansion Approach for Nonlinear Blade Forced Response Prediction Considering Variable Rotational Speed
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Topics: Algebra, Blades, Degrees of freedom, Dimensions, Disks, Eigenvalues, Friction, Nonlinear systems, Stiffness, Tradeoffs
Proceedings Papers

Impulse Mistuning of Blades and Vanes

Andreas Hartung, Ulrich Retze, Hans-Peter Hackenberg
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A006, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56433
https://doi.org/10.1115/GT2016-56433
View Paper titled, Impulse Mistuning of Blades and Vanes
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Topics: Blades, Impulse (Physics), Absorption, Resonance, Energy dissipation, Friction, Vibration, Dampers, Damping, Design
Proceedings Papers

A Practical Approach for Evaluation of Equivalent Linear Damping From Measurements of Mistuned and/or Non-Linear Stages and Forced Response Validation

Andreas Hartung, Hans-Peter Hackenberg
Proc. ASME. GT2016, Volume 7A: Structures and Dynamics, V07AT32A007, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56435
https://doi.org/10.1115/GT2016-56435
View Paper titled, A Practical Approach for Evaluation of Equivalent Linear Damping From Measurements of Mistuned and/or Non-Linear Stages and Forced Response Validation
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Topics: Damping, Blades, Design, Nonlinear systems, Signals
Journal Articles

An Approach for Estimating the Effect of Transient Sweep Through a Resonance

Hans-Peter Hackenberg, Andreas Hartung
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2016, 138(8): 082502.
Paper No: GTP-15-1554
https://doi.org/10.1115/1.4032664
Published Online: March 15, 2016
View Article titled, An Approach for Estimating the Effect of Transient Sweep Through a Resonance
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Topics: Damping, Resonance, Transients (Dynamics), Engines, Excitation
Proceedings Papers

An Approach for Estimating the Effect of Transient Sweep Through a Resonance

Hans-Peter Hackenberg, Andreas Hartung
Proc. ASME. GT2015, Volume 7B: Structures and Dynamics, V07BT32A004, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-42163
https://doi.org/10.1115/GT2015-42163
View Paper titled, An Approach for Estimating the Effect of Transient Sweep Through a Resonance
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Topics: Resonance, Transients (Dynamics), Aircraft engines, Blades, Damping, Air jets, Airfoils, Compressors, Degrees of freedom, Disks
Proceedings Papers

Reduced Order Modeling Based on Complex Nonlinear Modal Analysis and its Application to Bladed Disks With Shroud Contact

Malte Krack, Lars Panning-von Scheidt, Jörg Wallaschek, Christian Siewert, Andreas Hartung
Proc. ASME. GT2013, Volume 7B: Structures and Dynamics, V07BT31A010, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-94560
https://doi.org/10.1115/GT2013-94560
View Paper titled, Reduced Order Modeling Based on Complex Nonlinear Modal Analysis and its Application to Bladed Disks With Shroud Contact
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Topics: Disks, Modal analysis, Modeling, Damping, Design, Flutter (Aerodynamics), Limit cycles, Oscillations, Resonance, Algebra