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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
Citations
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Journal ArticleDOI
Stick-Slip Motion of Turbine Blade Dampers
Friedrich Pfeiffer,Manfred Hajek +1 more
TL;DR: In this paper, a theoretical approach to stick-slip vibrations is presented and some design aspects of such dampers are discussed by considering the damping behaviour in relation to important design parameters.
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A study on the dynamics of rotating beams with functionally graded properties
Marcelo T. Piovan,Rubens Sampaio +1 more
TL;DR: In this paper, a rotating nonlinear beam model accounting for arbitrary axial deformations is developed, where the beam is made of functionally graded materials (FGM) and the assumption of steady-state values of centrifugal loads is evaluated.
Fluid/structure coupled aeroelastic computations for transonic flows in turbomachinery
TL;DR: The results show that the unsteady pressure generated at the shock may act to damp or excite the blade motion mainly depending on the inter-blade phase angle, and it is concluded that the level of sophistication in the individually sophisticated disciplines together with an accurate coupling interface will allow for accurate prediction of flutter boundaries of turbomachinery components.
Journal ArticleDOI
Dynamical systems with unilateral contacts
Ch. Glocker,Friedrich Pfeiffer +1 more
TL;DR: In this article, a percussion drilling machine is examined as an example for mechanical systems with unilateral contacts, and the constrained motion of the system and simultaneously the constraint forces are taken into account by algebraic relations.