1-16 of 16
Christian Siewert
Close
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Articles

Detection of Cracks in Turbomachinery Blades by Online Monitoring

Manish Kumar, Roger Heinig, Mark Cottrell, Christian Siewert, Henning Almstedt, Drew Feiner, Jerry Griffin
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2023, 145(4): 041023.
Paper No: GTP-20-1830
https://doi.org/10.1115/1.4053705
Published Online: February 27, 2023
View Article titled, Detection of Cracks in Turbomachinery Blades by Online Monitoring
Open the PDF for Detection of Cracks in Turbomachinery Blades by Online Monitoring in another window
Topics: Blades, Fracture (Materials)
Proceedings Papers

Development of a Last Stage Blade Row Coupled by Damping Elements: Numerical Assessment of its Vibrational Behavior and its Experimental Validation During Spin Pit Measurements

Christian Siewert, Frank Sieverding, William J. McDonald, Manish Kumar, James R. McCracken
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T29A018, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63630
https://doi.org/10.1115/GT2017-63630
View Paper titled, Development of a Last Stage Blade Row Coupled by Damping Elements: Numerical Assessment of its Vibrational Behavior and its Experimental Validation During Spin Pit Measurements
Open the PDF for Development of a Last Stage Blade Row Coupled by Damping Elements: Numerical Assessment of its Vibrational Behavior and its Experimental Validation During Spin Pit Measurements in another window
Topics: Blades, Damping, Particle spin, Rotation, Spin (Aerodynamics), Stress, Steam, Vibration, Airfoils, Centrifugal force
Proceedings Papers

Optimization of the Vibration Behavior at Speed-Synchronous Resonance of a Large Turbine Blade During Speed-Up and Coast-Down Under Consideration of Mistuning

Bertold Lübbe, Christian Siewert
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T29A013, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: GT2017-63550
https://doi.org/10.1115/GT2017-63550
View Paper titled, Optimization of the Vibration Behavior at Speed-Synchronous Resonance of a Large Turbine Blade During Speed-Up and Coast-Down Under Consideration of Mistuning
Open the PDF for Optimization of the Vibration Behavior at Speed-Synchronous Resonance of a Large Turbine Blade During Speed-Up and Coast-Down Under Consideration of Mistuning in another window
Topics: Optimization, Resonance, Shorelines, Turbine blades, Vibration, Blades, Excitation, Rotors, Transients (Dynamics), Turbines
Proceedings Papers

Transient Forced Response Analysis of Mistuned Steam Turbine Blades During Start-Up and Coast-Down

Christian Siewert, Heinrich Stüer
Proc. ASME. GT2014, Volume 1B: Marine; Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V01BT27A022, June 16–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: GT2014-25654
https://doi.org/10.1115/GT2014-25654
View Paper titled, Transient Forced Response Analysis of Mistuned Steam Turbine Blades During Start-Up and Coast-Down
Open the PDF for Transient Forced Response Analysis of Mistuned Steam Turbine Blades During Start-Up and Coast-Down in another window
Topics: Blades, Shorelines, Steam turbines, Transients (Dynamics), Disks, Vibration, Flutter (Aerodynamics), Dynamics (Mechanics), Eigenvalues, Statistics
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
Open the PDF for Reduced Order Modeling Based on Complex Nonlinear Modal Analysis and its Application to Bladed Disks With Shroud Contact in another window
Topics: Disks, Modal analysis, Modeling, Damping, Design, Flutter (Aerodynamics), Limit cycles, Oscillations, Resonance, Algebra
Proceedings Papers

Multiharmonic Analysis and Design of Shroud Friction Joints of Bladed Disks Subject to Microslip

Malte Krack, Anna Herzog, Lars Panning-von Scheidt, Jörg Wallaschek, Christian Siewert, Andreas Hartung
Proc. ASME. IDETC-CIE2012, Volume 1: 24th Conference on Mechanical Vibration and Noise, Parts A and B, 1083-1092, August 12–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: DETC2012-70184
https://doi.org/10.1115/DETC2012-70184
View Paper titled, Multiharmonic Analysis and Design of Shroud Friction Joints of Bladed Disks Subject to Microslip
Open the PDF for Multiharmonic Analysis and Design of Shroud Friction Joints of Bladed Disks Subject to Microslip in another window
Topics: Design, Disks, Friction, Resonance, Vibration, Ansätze (Mathematics), Coulombs, Damping, Dynamics (Mechanics), Elasticity
Proceedings Papers

Robust Design of Friction Interfaces of Bladed Disks With Respect to Parameter Uncertainties

Malte Krack, Lars Panning, Jörg Wallaschek, Christian Siewert, Andreas Hartung
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 1193-1204, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68578
https://doi.org/10.1115/GT2012-68578
View Paper titled, Robust Design of Friction Interfaces of Bladed Disks With Respect to Parameter Uncertainties
Open the PDF for Robust Design of Friction Interfaces of Bladed Disks With Respect to Parameter Uncertainties in another window
Topics: Design, Disks, Friction, Uncertainty, Coulombs, Damping, Equations of motion, Excitation, Optimization, Probability
Proceedings Papers

Forced Response Analysis of Mistuned Turbine Bladings

Christian Siewert, Heinrich Stu¨er
Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 1145-1156, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-23782
https://doi.org/10.1115/GT2010-23782
View Paper titled, Forced Response Analysis of Mistuned Turbine Bladings
Open the PDF for Forced Response Analysis of Mistuned Turbine Bladings in another window
Topics: Damping, Disks, Dynamics (Mechanics), Stiffness, Turbines
Proceedings Papers

A Substructure Based Reduced Order Model for Mistuned Bladed Disks

Andreas Hohl, Christian Siewert, Lars Panning, Jo¨rg Wallaschek
Proc. ASME. IDETC-CIE2009, Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 899-906, August 30–September 2, 2009
Publisher: American Society of Mechanical Engineers
Paper No: DETC2009-87459
https://doi.org/10.1115/DETC2009-87459
View Paper titled, A Substructure Based Reduced Order Model for Mistuned Bladed Disks
Open the PDF for A Substructure Based Reduced Order Model for Mistuned Bladed Disks in another window
Topics: Disks, Blades, Waves, Degrees of freedom, Modal analysis
Journal Articles

Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces

Christian Siewert, Lars Panning, Jörg Wallaschek, Christoph Richter
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2010, 132(8): 082501.
https://doi.org/10.1115/1.4000266
Published Online: May 26, 2010
View Article titled, Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces
Open the PDF for Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces in another window
Topics: Turbines, Vibration, Displacement, Friction, Blades, Excitation, Stiffness, Stress, Failure
Journal Articles

Eddy Current Damping: A Concept Study for Steam Turbine Blading

Jacob Laborenz, Christian Siewert, Lars Panning, Jörg Wallaschek, Christoph Gerber, Pierre-Alain Masserey
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2010, 132(5): 052505.
https://doi.org/10.1115/1.3205032
Published Online: March 5, 2010
View Article titled, Eddy Current Damping: A Concept Study for Steam Turbine Blading
Open the PDF for Eddy Current Damping: A Concept Study for Steam Turbine Blading in another window
Topics: Damping, Eddies (Fluid dynamics), Eddy currents (Electricity), Blades, Vibration, Steam turbines
Proceedings Papers

Eddy Current Damping: A Concept Study for Steam Turbine Blading

Jacob Laborenz, Christian Siewert, Lars Panning, Jo¨rg Wallaschek, Christoph Gerber, Pierre-Alain Masserey
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 333-342, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59593
https://doi.org/10.1115/GT2009-59593
View Paper titled, Eddy Current Damping: A Concept Study for Steam Turbine Blading
Open the PDF for Eddy Current Damping: A Concept Study for Steam Turbine Blading in another window
Topics: Damping, Eddies (Fluid dynamics), Eddy currents (Electricity), Steam turbines, Blades, Dampers, Failure, Friction, High cycle fatigue, Machinery
Proceedings Papers

Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces

Christian Siewert, Lars Panning, Jo¨rg Wallaschek, Christoph Richter
Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 231-243, June 8–12, 2009
Publisher: American Society of Mechanical Engineers
Paper No: GT2009-59201
https://doi.org/10.1115/GT2009-59201
View Paper titled, Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces
Open the PDF for Multiharmonic Forced Response Analysis of a Turbine Blading Coupled by Nonlinear Contact Forces in another window
Topics: Blades, Centrifugal force, Damage, Damping, Design, Displacement, Energy dissipation, Excitation, Failure, Friction
Proceedings Papers

Numerical and Experimental Damping Prediction of a Nonlinearly Coupled Low Pressure Steam Turbine Blading

Christian Siewert, Lars Panning, Christoph Gerber, Pierre-Alain Masserey
Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 531-542, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-51073
https://doi.org/10.1115/GT2008-51073
View Paper titled, Numerical and Experimental Damping Prediction of a Nonlinearly Coupled Low Pressure Steam Turbine Blading
Open the PDF for Numerical and Experimental Damping Prediction of a Nonlinearly Coupled Low Pressure Steam Turbine Blading in another window
Topics: Damping, Pressure, Steam turbines, Blades, Vibration, Damage, Design, Energy dissipation, Friction, Nonlinear equations
Proceedings Papers

Nonlinear Vibration Analysis of Gas Turbine Bladings With Shroud Coupling

Andreas Hohl, Christian Siewert, Lars Panning, Andreas Kayser
Proc. ASME. GT2008, Volume 5: Structures and Dynamics, Parts A and B, 425-433, June 9–13, 2008
Publisher: American Society of Mechanical Engineers
Paper No: GT2008-50787
https://doi.org/10.1115/GT2008-50787
View Paper titled, Nonlinear Vibration Analysis of Gas Turbine Bladings With Shroud Coupling
Open the PDF for Nonlinear Vibration Analysis of Gas Turbine Bladings With Shroud Coupling in another window
Topics: Gas turbines, Nonlinear vibration, Vibration, Damping, Dampers, Equations of motion, Excitation, Finite element analysis, Finite element model, Fluids
Proceedings Papers

The Estimation of the Contact Stiffness for Directly and Indirectly Coupled Turbine Blading

Christian Siewert, Lars Panning, Annika Schmidt-Fellner, Andreas Kayser
Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 841-853, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-90473
https://doi.org/10.1115/GT2006-90473
View Paper titled, The Estimation of the Contact Stiffness for Directly and Indirectly Coupled Turbine Blading
Open the PDF for The Estimation of the Contact Stiffness for Directly and Indirectly Coupled Turbine Blading in another window
Topics: Stiffness, Turbines, Computation, Damage, Dampers, Damping, Vibration