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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
Journal Articles

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

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 Article titled, 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
Proceedings Papers

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

Christian Berthold, Johann Groß, Christian Frey, Malte Krack
Proc. ASME. GT2022, Volume 8A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Engineering Design, Analysis, and Additive Manufacturing; Fatigue, Fracture, and Life Prediction, V08AT21A001, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-77999
https://doi.org/10.1115/GT2022-77999
View Paper titled, Fully Coupled Analysis of Flutter Induced Limit Cycles: Frequency vs. Time Domain Methods
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Topics: Flutter (Aerodynamics), Limit cycles, Fluid structure interaction, Oscillations, Blades, Friction, Vibration, Aircraft engines, Boundary-value problems, Damping
Journal Articles

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

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 Article titled, 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

How Intrusive Are Accelerometers for Measuring Nonlinear Vibrations? A Case Study on a Compressor Blade Subjected to Vibro-Impact Dynamics

Lukas Woiwode, Florian Müller, Johann Groß, Maren Scheel, Malte Krack
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2022, 144(4): 041002.
Paper No: VIB-21-1321
https://doi.org/10.1115/1.4053357
Published Online: January 13, 2022
View Article titled, How Intrusive Are Accelerometers for Measuring Nonlinear Vibrations? A Case Study on a Compressor Blade Subjected to Vibro-Impact Dynamics
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Topics: Accelerometers, Blades, Excitation, Vibration, Damping, Dynamics (Mechanics), Sensors, Compressors
Proceedings Papers

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

Christian Berthold, Johann Gross, Christian Frey, Malte Krack
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A032, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16253
https://doi.org/10.1115/GT2020-16253
View Paper titled, Analysis of Friction-Saturated Flutter Vibrations With a Fully-Coupled Frequency Domain Method
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Topics: Flutter (Aerodynamics), Friction, Vibration, Oscillations, Damping, Limit cycles, Aerodynamics, Algorithms, Boundary-value problems, Deflection
Proceedings Papers

Modeling Complex Contact Conditions and Their Effect on Blade Dynamics

Chiara Gastaldi, Johann Gross, Maren Scheel, Teresa M. Berruti, Malte Krack
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A011, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14630
https://doi.org/10.1115/GT2020-14630
View Paper titled, Modeling Complex Contact Conditions and Their Effect on Blade Dynamics
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Topics: Blades, Dynamics (Mechanics), Modeling, Dampers, Disks, Friction, Pressure, Springs, Coulombs, Design
Journal Articles

Modeling Complex Contact Conditions and Their Effect on Blade Dynamics

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 Article titled, 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

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 Article titled, 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

Effect of Modal Interactions on Friction-Damped Self-Excited Vibrations

Lukas Woiwode, Johann Gross, Malte Krack
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. June 2021, 143(3): 031003.
Paper No: VIB-20-1312
https://doi.org/10.1115/1.4048396
Published Online: October 6, 2020
View Article titled, Effect of Modal Interactions on Friction-Damped Self-Excited Vibrations
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Topics: Damping, Excitation, Friction, Limit cycles, Oscillations, Resonance, Stability, Vibration, Dry friction
Journal Articles

Special Issue: Tribomechadynamics

Matthew R. W. Brake, Malte Krack, Christoph W. Schwingshackl
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Guest Editorial
J. Vib. Acoust. October 2020, 142(5): 050301.
Paper No: VIB-20-1395
https://doi.org/10.1115/1.4048185
Published Online: August 26, 2020
View Article titled, Special Issue: Tribomechadynamics
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Topics: Contact mechanics, Nonlinear dynamics, Tribology, Wear, Workshops (Work spaces), Design, Manufacturing, Aerospace industry, Belts, Damping
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
Journal Articles

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

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 Article titled, 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
Proceedings Papers

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

Johann Gross, Malte Krack
Proc. ASME. GT2019, Volume 7A: Structures and Dynamics, V07AT36A002, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-90247
https://doi.org/10.1115/GT2019-90247
View Paper titled, Multi-Wave Vibration Caused by Flutter Instability and Nonlinear Tip Shroud Friction
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Topics: Flutter (Aerodynamics), Friction, Vibration, Waves, Traveling waves, Blades, Chain, Disks, Dynamics (Mechanics), Eigenvalues
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

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
Journal Articles

Analysis of the Effect of Multirow and Multipassage Aerodynamic Interaction on the Forced Response Variation in a Compressor Configuration—Part II: Effects of Additional Structural Mistuning

Johann Gross, Malte Krack, Harald Schoenenborn
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. May 2018, 140(5): 051005.
Paper No: TURBO-17-1127
https://doi.org/10.1115/1.4038869
Published Online: February 28, 2018
View Article titled, Analysis of the Effect of Multirow and Multipassage Aerodynamic Interaction on the Forced Response Variation in a Compressor Configuration—Part II: Effects of Additional Structural Mistuning
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Topics: Excitation, Blades, Disks
Proceedings Papers

Analysis of the Effect of Multi-Row and Multi-Passage Aerodynamic Interaction on the Forced Response Variation in a Compressor Configuration: Part 2 — Effects of Additional Structural Mistuning

Johann Gross, Malte Krack, Harald Schoenenborn
Proc. ASME. GT2017, Volume 7B: Structures and Dynamics, V07BT36A003, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63019
https://doi.org/10.1115/GT2017-63019
View Paper titled, Analysis of the Effect of Multi-Row and Multi-Passage Aerodynamic Interaction on the Forced Response Variation in a Compressor Configuration: Part 2 — Effects of Additional Structural Mistuning
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Topics: Compressors, Blades, Disks, Acoustics, Design, Excitation, Finite element model, Mechanical properties, Rotation, Spin (Aerodynamics)