International Journal of Turbomachinery, Propulsion and Power, 2023 For engines operating using heavy fuel oil (HFO), the nozzle rings of turbocharger turbines are prone to severe degradation because of contamination with unburned fuel deposits. This contamination may lead to increased excitation of blade resonance.
Takashi Ando
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Suppression of Nonsynchronous Vibration Through Intentional Aerodynamic and Structural Mistuning
, 2021 International audienceNonsynchronous vibrations (NSVs) arising near the stall boundary of compressors are a recurring and potentially safety-critical problem in modern axial compressors and fans.
Sina Stapelfeldt +3 more
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Nonproportional Intentionally Mistuned Turbine Blisk Design with Improved Component Modal Synthesis
Shock and Vibration, 2021 An improved component modal synthesis-based nonproportional mistuning method (ICMS-NPMM) is proposed to investigate mistuned turbine blisks (MTBs) since the high-fidelity finite element models (HFEMs) involve large number of computations, which leads to ...
Bin Bai +4 more
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Study on Influence of Multi-Parameter Variation of Bladed Disk System on Vibration Characteristics
Applied Sciences, 2021 As the main components of the rotor system of aero-engines and other rotating machinery equipment, the bladed disk system has high requirements on its structure design, safety and stability.
Honggang Pan, Yunshi Wu, Tianyu Zhao
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Intentional mistuning optimization of nonlinear mistuned bladed-disks
, 2022 One major industrial challenge is to consider the detuning as a technological means to reduce the dynamical amplifications induced by mistuning. A full analysis of the detuning optimization of mistuned bladed-disks with finite displacements is carried out on a 12 bladed-disk finite element model.
Capiez-Lernout, Evangéline +1 more
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Study on vibration characteristics and stability of steam turbine vanes with large capacity
Nihon Kikai Gakkai ronbunshu, 2016 A vane used in a low pressure end of steam turbine is usually fixed to an inner shroud and an outer ring by welding both ends. In such a vane structure, the damping in loading operation is comprised of the material damping and the aerodynamic damping ...
Yasutomo KANEKO +3 more
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Structural and aerodynamic mistuning in blade aeroelasticity [PDF]
The blade-to-blade variations, also known as mistuning, are inevitably present in the bladerow due to manufacturing tolerances, assemble processes, as well as wear and tear.
Phan, Hien Minh
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Efficient computational techniques for mistuning analysis of bladed discs: A review [PDF]
, 2016 This paper describes a review of the relevant literature about mistuning problems in bladed disc systems, and their implications for the uncertainty propagation associated to the dynamics of aeroengine systems.
Rajasekaran, R. +11 more
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Modal Analyses of an Axial Turbine Blisk With Intentional Mistuning
, 2017 The potential of intentional mistuning to reduce the maximum forced response is analyzed within the development of an axial turbine blisk for ship diesel engine turbocharger applications.
Arnold Kühhorn +3 more
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Study on identification of modal parameters of turbomachinery blade and impeller
Nihon Kikai Gakkai ronbunshu, 2020 To develop turbomachinery blades with high reliability, it is indispensable to verify the natural frequency, the damping, the resonant stress, etc. under operating condition, and utilize these data in the mechanical design of a new blade.
Yasutomo KANEKO +2 more
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