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Keywords: forced response
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Proceedings Papers

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A009, June 13–17, 2022
Paper No: GT2022-82149
... is taken into account. ground vortex unsteady distortion numerical forced response Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-82149 INVESTIGATIONS OF THE UNSTEADY AERODYNAMIC CHARACTERISTICS...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A004, June 13–17, 2022
Paper No: GT2022-78101
... Abstract This paper continues previous research by the current authors in a series of papers describing the impact of multi-row interaction on the forced response behavior of embedded compressor rotors. Specifically, this work dives into an aspect of the embedded rotor forcing that has been...
Proceedings Papers

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT37A002, June 13–17, 2022
Paper No: GT2022-78033
... case with the downstream rotor in the computational model yielded the most accurate prediction of the blade response supporting earlier conclusions by the same authors that a downstream row was essential to predict the forcing function accurately. compressor forced response multi-row mistuning...
Proceedings Papers

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, V08AT21A003, June 13–17, 2022
Paper No: GT2022-79761
...Proceedings of ASME Turbo Expo 2022 Turbomachinery Technical Conference and Exposition GT2022 June 13-17, 2022, Rotterdam, The Netherlands GT2022-79761 Effect of system mode and structural damping perturbation on the mistuned forced response and aerodynamic damping of embedded compressor rotors...
Proceedings Papers

Proc. ASME. GT2022, Volume 8B: Structures and Dynamics — Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration, V08BT27A016, June 13–17, 2022
Paper No: GT2022-82208
... Abstract Intentional mistuning is employed for a last stage turbine wheel featuring 51 blades to alleviate both the flutter susceptibility and maximum forced response. Primarily, operations at nominal speed under part-load conditions may cause unfavorable flow conditions facilitating flow...
Proceedings Papers

Proc. ASME. GT2021, Volume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture, V001T41A001, June 7–11, 2021
Paper No: GT2021-60864
... and grand challenges are also given. aero-engine instability damping forced response system identification Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-60864 INSTABILITIES EVERYWHERE! HARD PROBLEMS IN AERO...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A008, June 7–11, 2021
Paper No: GT2021-59040
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59040 PRACTICAL METHOD FOR BURNER STAGING TURBINE FORCED RESPONSE EVALUATION Nikola Kafedzhiyski Maria Mayorca Siemens Energy AB Siemens Energy AB Finspång, Sweden...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A002, June 7–11, 2021
Paper No: GT2021-58779
... Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-58779 INFLUENCE OF STATOR HUB CAVITIES ON THE FORCED RESPONSE BEHAVIOUR OF AN EMBEDDED COMPRESSOR ROTOR Shreyas Hegde1, Robert Kielb1, Laith Zori2, Rubens...
Proceedings Papers

Proc. ASME. GT2021, Volume 9A: Structures and Dynamics — Aerodynamics Excitation and Damping; Bearing and Seal Dynamics; Emerging Methods in Design and Engineering, V09AT23A003, June 7–11, 2021
Paper No: GT2021-58780
...Abstract Abstract This paper focusses on predicting the mistuned forced response behavior of an embedded compressor rotor blade row in a 3.5 stage axial compressor. The authors in previous papers studied the multi-row influence on the forcing function for multiple operating conditions...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A009, September 21–25, 2020
Paper No: GT2020-14468
...Abstract Abstract The last stage bladed disk of a steam turbine is analyzed with respect to both flutter susceptibility and limitation of forced response. Due to the lack of variable stator vanes unfavorable flow conditions may occur which can lead to flow separation in some circumstances...
Proceedings Papers

Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T30A032, September 21–25, 2020
Paper No: GT2020-15508
...Abstract Abstract This paper presents experimental and numerical investigation of mistuned forced responses of an integrally bladed disk with full set of underplatform dampers (UPDs). This research aims at providing: 1. An experimental benchmark for nonlinear dynamics of a mistuned bladed...
Proceedings Papers

Proc. ASME. GT2020, Volume 2E: Turbomachinery, V02ET41A012, September 21–25, 2020
Paper No: GT2020-14482
...Abstract Abstract This paper focuses on the impact of multi-row interaction on the forced response behavior of an embedded compressor rotor at higher order modes. The authors in previous papers have discussed about the multi-row influence at the torsional mode resonant crossing and this paper...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A013, September 21–25, 2020
Paper No: GT2020-15123
... and vibrations was highlighted. Keywords: Low Pressure Turbines; Inlet Distortion; Aeroelasticity; Unsteady Aerodynamics; Forced Response; Rotor Vibrations; Strain Gauges. NOMENCLATURE Abbreviations 5HP 5 Hole Probe BPF Blade Passing Frequency BPP Blade Passing Period EO Engine Order EF Eigenfrequency FRAPP Fast...
Proceedings Papers

Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A007, September 21–25, 2020
Paper No: GT2020-14750
... and integrated blisks are common in engine designs. So, fan blades are prone to serious vibrations such as flutter and forced response, which may lead to high-cycle fatigue, and further cause structural failure. The aeromechanical characteristics of a transonic fan (NASA rotor67) in presence of a s-shaped...
Proceedings Papers

Proc. ASME. GT2011, Volume 6: Structures and Dynamics, Parts A and B, 1127-1135, June 6–10, 2011
Paper No: GT2011-46435
... tip-timing measurements is performed by using realistic finite element models of the blisk. tip-timing method travelling wave mode identification Coriolis effect bladed disk forced response 1 Copyright © 2011 by ASME Proceedings of ASME Turbo Expo 2011: Power for Land, Sea and Air...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 845-854, June 14–18, 2010
Paper No: GT2010-22388
... 11 01 2011 The study intends to simulate the process of the blade tip amplitude calculation by the tip-timing method. An attention is focused on tip-timing measurements for detection of a cracked blade from the bladed disk forced response. The cracked blade is considered within...
Proceedings Papers

Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 1103-1116, June 14–18, 2010
Paper No: GT2010-23610
... a simplified finite elements model taking into account Coriolis effect. The paper focuses on the influence of the latter which is most of the time neglected and its implication on the forced response levels is studied into two situations without or with mistuning. bladed disk forced response Coriolis...
Proceedings Papers

Proc. ASME. GT2003, Volume 4: Turbo Expo 2003, 195-205, June 16–19, 2003
Paper No: GT2003-38060
... 05 02 2009 A theory was previously developed for predicting robust maximum forced response in mistuned bladed disks from distortion of a structural mode. This paper describes an experiment to demonstrate the theory. A bladed disk is designed to be sufficiently sensitive to mistuning...
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 1047-1056, June 3–6, 2002
Paper No: GT2002-30452
... of rotational speed (−5% to +10%) did not show remarkable changes in the mode excitability of the investigated rotor. excitability forced response mode shape unsteady flow computation stator-rotor interaction high-pressure turbine design Proceedings of ASME Turbo Expo 2002 June 3 6, 2002...
Proceedings Papers

Proc. ASME. GT2002, Volume 4: Turbo Expo 2002, Parts A and B, 953-964, June 3–6, 2002
Paper No: GT2002-30425
... it requires only minimal input data, this model is much easier to use than previous reduced order methods. Furthermore, its simplicity allows the fundamental parameters that control mistuning to be readily identified. Mistuning blade vibration reduced order model forced response modeling...