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Turbomachine blade vibration
TLDR
In this paper, the authors present a detailed analysis of single and coupled blade-disc vibrations, as well as the effect of small aspect ratio on the number of vibrations.Abstract:
Single Blade Vibrations Discrete Analysis of Blades Small Aspect Ratio Blades Blade Group Frequencies and Mode Shapes Excitation Damping Forced Vibrations Transient Vibrations Coupled Blade-Disc Vibrations Some Thoughts on Fatigue Life Estimation Some Reflections Appendices: Heat Transfer and Thermal Stress of Turbine Blades SI Units Nomenclature Index.read more
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Steady-state coupling vibration analysis of shaft–disk–blade system with blade crack
TL;DR: In this paper, a modified stress-based breathing crack model (MSBCM) for rotating blade is proposed, and the validity of the proposed model is verified by comparing the results obtained by MSBCM, finite element contact crack model and conventional analytical crack models.
Book
Vibration of Nearly Periodic Structures and Mistuned Bladed Rotors
TL;DR: In this paper, the authors present fundamental concepts and state-of-the-art techniques in the analysis of free and forced response of a nearly periodic structure, weaving together his own work (covering thirty-five years of research in this field) with works by other researchers.
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Finite element dynamic analysis of blade shear center effects on practical bladed discs
TL;DR: In this paper, the dynamic characteristics of rotating and non-rotating practical bladed discs have been investigated by taking blade shear center effects into account, and it has been found that when these effects in the blade are high the bladed disc vibration characteristics can also be considerably changed.
Journal ArticleDOI
Transient Stress Analysis and Fatigue Life Estimation of Turbine Blades
TL;DR: In this article, the life estimation of a turbine blade taking into account the combined effects of centrifugal stresses, vibratory stresses and thermal stresses is investigated, and the fatigue life is estimated from the number of cycles in various blocks during start-up and shut-down periods of the turbine operation.
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A Study on Possibility to Apply Piezoelectric Actuators for Active Reduction of Torsional Beams Vibrations
TL;DR: In this paper, the results of several tests concerning possible application of piezoelectric elements to reduce torsional vibrations of a beam are presented and discussed and the proposed method of application is a novel one.