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Keywords: harmonic balance method
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Proceedings Papers

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT32A048, June 13–17, 2022
Paper No: GT2022-84388
... numerical methods. multi-stage turbomachinery unsteady flow blade row interaction mixing-plane method harmonic balance method space-time gradient method Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A009, June 13–17, 2022
Paper No: GT2022-81694
... Abstract The study presented in this paper focuses on the analysis of rubbing interactions — including unilateral contact and dry friction — between a rotating fan blade and a rigid casing by frequency domain methods. Two previously published Harmonic Balance Method-based methodologies...
Topics: Blades, NASA, Rotors
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A018, June 13–17, 2022
Paper No: GT2022-82322
... to efficiently assess the stability of computed solutions are also detailed in order to provide a comprehensive view of the challenges inherent to such numerical developments. harmonic balance method blade-tip/casing contacts rotor/stator interaction Floquet theory Hill’s method stability analysis...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A003, June 13–17, 2022
Paper No: GT2022-79918
.... A procedure is implemented to handle the interpenetration generated by the pre-torsion of the blades, which is the key part of the static loading of the structure. In order to solve this non-linear dynamic problem in the frequency domain, based on the static loading results, the Harmonic Balance Method (HBM...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A001, June 7–11, 2021
Paper No: GT2021-58766
... and airfoil shapes are iterated using conventional Throughflow Keywords: Flutter, Aerodynamic Damping, Tip Shroud, Last methods. High-level aerodynamic design is achieved with the Stage Turbine Blade, Harmonic Balance Method. use of computational fluid dynamics (CFD) solvers where fully viscous 3D flow...
Proceedings Papers

Proc. ASME. GT2021, Volume 9B: Structures and Dynamics — Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V09BT29A020, June 7–11, 2021
Paper No: GT2021-59298
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59298 DEVELOPMENT OF A HARMONIC BALANCE METHOD-BASED NUMERICAL STRATEGY FOR BLADE-TIP/CASING INTERACTIONS: APPLICATION TO NASA ROTOR 37 Yann Colaïtis1 Alain...
Proceedings Papers

Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A005, September 21–25, 2020
Paper No: GT2020-14415
... the system s degrees of freedom (DOFs). Then, in the process of solving the equations by harmonic balance method (HBM) and Newton-Raphson method, an original method for fast calculating tangent stiffness matrix is proposed. Finally, the effects of the crack depth, the anisotropy of bearing and relative angle...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A019, September 21–25, 2020
Paper No: GT2020-14941
..., Mistuning, Polynomial non- linearities, Internal resonance, Harmonic Balance Method NOMENCLATURE M, C, K Mass, damping and stiffness matrices u Vector of nodal displacements I, 0 Identity matrix, zero matrix Matrix of static mode shapes Matrix of normal nonlinear mode with fixed cyclic boundaries q...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A022, September 21–25, 2020
Paper No: GT2020-15959
... and identification of adequate working ranges of the harmonic balance method, which has been widely used for the aeromechanical analysis of turbomachines, are also presented in this work. This paper will bridge a key gap in the knowledge of aeroelasticity modelling and analysis of modern LPTs. Keywords: low-pressure...
Proceedings Papers

Proc. ASME. GT2009, Volume 6: Structures and Dynamics, Parts A and B, 353-362, June 8–12, 2009
Paper No: GT2009-59598
... in the disk, a reduction procedure was implemented to simulate full bladed disk. It is proposed to use crack location as an interface between two substructures for subsequent fixed-interface method application. Harmonic balance method was applied to take into account crack nonlinear behavior under...
Topics: Blades, Disks