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Jörg Wallaschek
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Proceedings Papers

Reduced Order Modeling of Forced Response in a Multistage Compressor Under Mistuning and Aerocoupling

Niklas Maroldt, Joerg R. Seume, Lukas Schwerdt, Lars Panning von-Scheidt, Jörg Wallaschek, Ricarda Berger, Raimund Rolfes
Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A007, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-81090
https://doi.org/10.1115/GT2022-81090
View Paper titled, Reduced Order Modeling of Forced Response in a Multistage Compressor Under Mistuning and Aerocoupling
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Topics: Compressors, Modeling, Vibration, Rotors, Blades, Damping, Engineering simulation, Fatigue life, High cycle fatigue, Simulation
Journal Articles

Reduced Order Modeling of Forced Response in a Multistage Compressor Under Mistuning and Aerocoupling

Niklas Maroldt, Lukas Schwerdt, Ricarda Berger, Lars Panning-von Scheidt, Raimund Rolfes, Jörg Wallaschek, Joerg R. Seume
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2022, 144(11): 111017.
Paper No: GTP-22-1317
https://doi.org/10.1115/1.4055368
Published Online: September 22, 2022
View Article titled, Reduced Order Modeling of Forced Response in a Multistage Compressor Under Mistuning and Aerocoupling
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Topics: Acoustics, Blades, Compressors, Damping, Excitation, Fatigue, Rotors, Stiffness, Vibration, Modeling
Proceedings Papers

Development of a Multi-Shaker-Control to Investigate the Influence of the Interblade Phase Angle on Frictionally Damped Turbine Blades

Florian Jäger, Ferhat Kaptan, Lars Panning-Von Scheidt, Jörg Wallaschek
Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT29A018, June 7–11, 2021
Publisher: American Society of Mechanical Engineers
Paper No: GT2021-59272
https://doi.org/10.1115/GT2021-59272
View Paper titled, Development of a Multi-Shaker-Control to Investigate the Influence of the Interblade Phase Angle on Frictionally Damped Turbine Blades
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Topics: Blades, Control algorithms, Control systems, Dampers, Damping, Degrees of freedom, Friction, Mode shapes, Stress, Turbine blades
Journal Articles

Single Nodal Diameter Excitation of Turbine Blades: Experimental and Theoretical Study

Thomas Hoffmann, 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. September 2021, 143(9): 091028.
Paper No: GTP-21-1129
https://doi.org/10.1115/1.4051172
Published Online: August 11, 2021
View Article titled, Single Nodal Diameter Excitation of Turbine Blades: Experimental and Theoretical Study
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Topics: Disks, Excitation, Blades, Turbine blades
Journal Articles

A Model Reduction Method for Bladed Disks With Large Geometric Mistuning Using a Partially Reduced Intermediate System Model

Lukas Schwerdt, 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. July 2021, 143(7): 071031.
Paper No: GTP-20-1571
https://doi.org/10.1115/1.4049357
Published Online: March 31, 2021
View Article titled, A Model Reduction Method for Bladed Disks With Large Geometric Mistuning Using a Partially Reduced Intermediate System Model
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Topics: Blades, Compressors, Disks, Modal analysis, Prisms (Optics), Errors, Maintenance, Simulation, Damage, Finite element analysis
Journal Articles

Equivalent Linearization of Bladed Disk Assemblies With Friction Nonlinearities Under Random Excitation

Alwin Förster, 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. May 2021, 143(5): 051005.
Paper No: GTP-20-1396
https://doi.org/10.1115/1.4048407
Published Online: March 11, 2021
View Article titled, Equivalent Linearization of Bladed Disk Assemblies With Friction Nonlinearities Under Random Excitation
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Topics: Coulombs, Disks, Excitation, Friction, Manufacturing, Random excitation, Displacement, Errors, Energy dissipation, Turbomachinery
Proceedings Papers

A Survey of the Present State of Friction Modelling in the Analytical and Numerical Investigation of Brake Noise Generation

Jörg Wallaschek, Karl-Heinz Hach, Ulrich Stolz, Parimal Mody
Proc. ASME. DETC99, Volume 7B: 17th Biennial Conference on Mechanical Vibration and Noise, 2299-2310, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8357
https://doi.org/10.1115/DETC99/VIB-8357
View Paper titled, A Survey of the Present State of Friction Modelling in the Analytical and Numerical Investigation of Brake Noise Generation
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Topics: Brakes, Friction, Modeling, Noise (Sound), Automotive brakes, Design, Rotors, Vibration, Wear, Braking
Proceedings Papers

Single Nodal Diameter Excitation of Turbine Blades: Experimental and Theoretical Study

Thomas Hoffmann, Lars Panning-von Scheidt, Jörg Wallaschek
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A008, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14282
https://doi.org/10.1115/GT2020-14282
View Paper titled, Single Nodal Diameter Excitation of Turbine Blades: Experimental and Theoretical Study
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Topics: Excitation, Turbine blades, Blades, Engines, Vibration, Spectra (Spectroscopy), Aerodynamics, Disks, Fluid-dynamic forces, Geometry
Proceedings Papers

A Model Reduction Method for Bladed Disks With Large Geometric Mistuning Using a Partially Reduced Intermediate System Model

Lukas Schwerdt, Lars Panning-von Scheidt, Jörg Wallaschek
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14199
https://doi.org/10.1115/GT2020-14199
View Paper titled, A Model Reduction Method for Bladed Disks With Large Geometric Mistuning Using a Partially Reduced Intermediate System Model
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Topics: Disks, Geometry, Prisms (Optics), Blades, Compressors, Damage, Finite element analysis, Maintenance, Simulation, System dynamics
Proceedings Papers

Equivalent Linearization of Bladed Disk Assemblies With Friction Nonlinearities Under Random Excitation

Alwin Förster, Lars Panning-von Scheidt, Jörg Wallaschek
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A005, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14264
https://doi.org/10.1115/GT2020-14264
View Paper titled, Equivalent Linearization of Bladed Disk Assemblies With Friction Nonlinearities Under Random Excitation
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Topics: Disks, Friction, Random excitation, Excitation, Dampers, Degrees of freedom, Manufacturing, Energy dissipation, Linear systems, Nonlinear equations
Journal Articles

Measured and Simulated Forced Response of a Rotating Turbine Disk With Asymmetric and Cylindrical Underplatform Dampers

Thomas Hoffmann, 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. May 2020, 142(5): 051002.
Paper No: GTP-19-1297
https://doi.org/10.1115/1.4045337
Published Online: February 14, 2020
View Article titled, Measured and Simulated Forced Response of a Rotating Turbine Disk With Asymmetric and Cylindrical Underplatform Dampers
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Topics: Blades, Dampers, Disks, Excitation, Turbines, Rotation, Resonance, Simulation, Dynamics (Mechanics), Frequency response
Journal Articles

Analysis of Contacts in Friction Damped Turbine Blades Using Dimensionless Numbers

Thomas Hoffmann, 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. December 2019, 141(12): 121023.
Paper No: GTP-19-1188
https://doi.org/10.1115/1.4044481
Published Online: November 20, 2019
View Article titled, Analysis of Contacts in Friction Damped Turbine Blades Using Dimensionless Numbers
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Topics: Friction, Turbine blades, Dimensionless numbers, Displacement
Journal Articles

Discussion of “Dynamic Modeling and Projection-Based Reduction Methods for Bladed Disks With Nonlinear Frictional and Intermittent Contact Interfaces” (Mitra, M., Epureanu, B. I., 2018, ASME Appl. Mech. Rev., 71 (5), p. 050803)

Jörg Wallaschek, Sebastian Willeke, Lars Panning-von Scheidt
Journal: Applied Mechanics Reviews
Publisher: ASME
Article Type: Discussions
Appl. Mech. Rev. September 2019, 71(5): 055502.
Paper No: AMR-19-1069
https://doi.org/10.1115/1.4044933
Published Online: October 9, 2019
View Article titled, Discussion of “Dynamic Modeling and Projection-Based Reduction Methods for Bladed Disks With Nonlinear Frictional and Intermittent Contact Interfaces” (Mitra, M., Epureanu, B. I., 2018, ASME Appl. Mech. Rev., 71 (5), p. 050803)
Open the PDF for Discussion of “Dynamic Modeling and Projection-Based Reduction Methods for Bladed Disks With Nonlinear Frictional and Intermittent Contact Interfaces” (Mitra, M., Epureanu, B. I., 2018, ASME Appl. Mech. Rev., 71 (5), p. 050803) in another window
Topics: Disks, Dynamic modeling, Modeling, Vibration, Dynamics (Mechanics), Turbomachinery, Friction
Journal Articles

Reduced-Order Modeling of Bladed Disks Considering Small Mistuning of the Disk Sectors

Lukas Schwerdt, Sebastian Willeke, 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. May 2019, 141(5): 052502.
Paper No: GTP-18-1393
https://doi.org/10.1115/1.4041071
Published Online: December 10, 2018
View Article titled, Reduced-Order Modeling of Bladed Disks Considering Small Mistuning of the Disk Sectors
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Topics: Blades, Disks
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

Influence of Geometric Design Parameters Onto Vibratory Response and High-Cycle Fatigue Safety for Turbine Blades With Friction Damper

Matthias Hüls, 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 2019, 141(4): 041022.
Paper No: GTP-18-1290
https://doi.org/10.1115/1.4040732
Published Online: December 4, 2018
View Article titled, Influence of Geometric Design Parameters Onto Vibratory Response and High-Cycle Fatigue Safety for Turbine Blades With Friction Damper
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Topics: Blades, Chain, Dampers, Design, Friction, High cycle fatigue, Resonance, Stress, Turbine blades, Airfoils
Journal Articles

Intentional Response Reduction by Harmonic Mistuning of Bladed Disks With Aerodynamic Damping

Sebastian Willeke, Lukas Schwerdt, 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. December 2018, 140(12): 121010.
Paper No: GTP-18-1292
https://doi.org/10.1115/1.4040898
Published Online: October 24, 2018
View Article titled, Intentional Response Reduction by Harmonic Mistuning of Bladed Disks With Aerodynamic Damping
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Topics: Blades, Damping, Disks
Journal Articles

Approximate Solution of the Fokker–Planck Equation for a Multidegree of Freedom Frictionally Damped Bladed Disk Under Random Excitation

Alwin Förster, 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. January 2019, 141(1): 011004.
Paper No: GTP-18-1279
https://doi.org/10.1115/1.4040740
Published Online: September 14, 2018
View Article titled, Approximate Solution of the Fokker–Planck Equation for a Multidegree of Freedom Frictionally Damped Bladed Disk Under Random Excitation
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Topics: Disks, Fokker-Planck equation, Random excitation, Approximation, Computation, Differential equations, Probability, Polynomials
Proceedings Papers

Approximate Solution of the Fokker-Planck Equation for a Multi-Degree of Freedom Frictionally Damped Bladed Disk Under Random Excitation

Alwin Förster, Lars Panning-von Scheidt, Jörg Wallaschek
Proc. ASME. GT2018, Volume 7A: Structures and Dynamics, V07AT32A002, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75755
https://doi.org/10.1115/GT2018-75755
View Paper titled, Approximate Solution of the Fokker-Planck Equation for a Multi-Degree of Freedom Frictionally Damped Bladed Disk Under Random Excitation
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Topics: Disks, Fokker-Planck equation, Random excitation, Excitation, Density, Finite element methods, Air flow, Blades, Computation, Degrees of freedom
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
Open the PDF for Rotational Speed-Dependent Contact Formulation for Nonlinear Blade Dynamics Prediction in another window
Topics: Blades, Dynamics (Mechanics), Algorithms, Approximation, Computation, Disks, Errors, Frequency response, Friction, Stiffness