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Malte Krack
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Journal Articles

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

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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 Articletitled, 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
Journal Articles

Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency Versus Time Domain Methods

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Christian Berthold, Johann Gross, Christian Frey, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2023, 145(7): 071009.
Paper No: GTP-22-1397
https://doi.org/10.1115/1.4062408
Published Online: May 25, 2023
View Articletitled, Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency Versus Time Domain Methods
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Topics: Fluid structure interaction, Fluids, Flutter (Aerodynamics), Limit cycles, Vibration, Blades, Oscillations, Resonance
Journal Articles

Identification of Mistuning Based on Forced Response Measurements and Assessment for a Real Compressor Blisk

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Benjamin Seeger, Lukas Kohlmann, Harald Schoenenborn, Stefan Schwarz, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2022, 144(9): 091006.
Paper No: GTP-22-1116
https://doi.org/10.1115/1.4055019
Published Online: August 1, 2022
View Articletitled, Identification of Mistuning Based on Forced Response Measurements and Assessment for a Real Compressor Blisk
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Topics: Blades, Cantilevers, Damping, Frequency response, Stiffness, Compressors, Resonance, Excitation, Vibration, Electromagnetic spectrum
Journal Articles

Modeling Complex Contact Conditions and Their Effect on Blade Dynamics

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Chiara Gastaldi, Johann Gross, Maren Scheel, Teresa M. Berruti, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2021, 143(1): 011007.
Paper No: GTP-20-1469
https://doi.org/10.1115/1.4049186
Published Online: December 24, 2020
View Articletitled, Modeling Complex Contact Conditions and Their Effect on Blade Dynamics
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Topics: Blades, Dampers, Hardening, Simulation, Stiffness, Pressure, Modeling, Friction, Vibration, Dynamics (Mechanics)
Journal Articles

Analysis of Friction-Saturated Flutter Vibrations With a Fully Coupled Frequency Domain Method

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Christian Berthold, Johann Gross, Christian Frey, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2020, 142(11): 111007.
Paper No: GTP-20-1508
https://doi.org/10.1115/1.4048650
Published Online: October 20, 2020
View Articletitled, Analysis of Friction-Saturated Flutter Vibrations With a Fully Coupled Frequency Domain Method
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Topics: Aerodynamics, Damping, Deflection, Deformation, Flow (Dynamics), Fluid-dynamic forces, Flutter (Aerodynamics), Friction, Limit cycles, Shapes
Journal Articles

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

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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 Articletitled, 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
Journal Articles

Multi-Wave Vibration Caused by Flutter Instability and Nonlinear Tip-Shroud Friction

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Johann Gross, Malte Krack
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. February 2020, 142(2): 021013.
Paper No: GTP-19-1463
https://doi.org/10.1115/1.4044884
Published Online: January 13, 2020
View Articletitled, Multi-Wave Vibration Caused by Flutter Instability and Nonlinear Tip-Shroud Friction
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Topics: Flutter (Aerodynamics), Traveling waves, Vibration, Waves, Damping, Blades, Friction, Attractors, Resonance
Journal Articles

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

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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 Articletitled, 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
Journal Articles

On the Interaction of Multiple Traveling Wave Modes in the Flutter Vibrations of Friction-Damped Tuned Bladed Disks

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Malte Krack, Lars Panning-von Scheidt, Jörg Wallaschek
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2017, 139(4): 042501.
Paper No: GTP-16-1403
https://doi.org/10.1115/1.4034650
Published Online: October 18, 2016
View Articletitled, On the Interaction of Multiple Traveling Wave Modes in the Flutter Vibrations of Friction-Damped Tuned Bladed Disks
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Topics: Disks, Flutter (Aerodynamics), Friction, Oscillations, Steady state, Traveling waves, Vibration, Waves, Limit cycles
Journal Articles

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

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Malte Krack, Lars Panning-von Scheidt, Jörg Wallaschek, Christian Siewert, Andreas Hartung
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2013, 135(10): 102502.
Paper No: GTP-13-1187
https://doi.org/10.1115/1.4025002
Published Online: August 30, 2013
View Articletitled, Reduced Order Modeling Based on Complex Nonlinear Modal Analysis and Its Application to Bladed Disks With Shroud Contact
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Topics: Damping, Design, Disks, Excitation, Friction, Modal analysis, Resonance, Vibration, Limit cycles, Optimization
Journal Articles

Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results

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Jacob Laborenz, Malte Krack, Lars Panning, Jörg Wallaschek, Markus Denk, Pierre-Alain Masserey
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2012, 134(4): 042504.
https://doi.org/10.1115/1.4004734
Published Online: February 1, 2012
View Articletitled, Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results
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Topics: Dampers, Damping, Eddies (Fluid dynamics), Finite element analysis, Finite element model, Permanent magnets, Eddy currents (Electricity), Turbines, Copper, Blades