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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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Free vibration of elastic helicoidal shells
TL;DR: In this article, an elastic helicoidal structure modelled as a plate twisted around its axis is studied and an energy equilibrium equation of free vibration is introduced by the principle of virtual work.
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Dynamic analysis of practical blades with shear center effect
TL;DR: In this article, an 18 degrees of freedom beam finite element was developed for rotational and non-rotating aerofoil cross-sectioned blades, where bending and shear force displacements and slopes, and torsional displacements were taken as degrees offreedom at both ends of the element.
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Vibration of a rotating smart beam
TL;DR: In this article, the authors investigated the active damping of the vibration of a rotating beam by using a pair of piezoelectric sensor and actuator layers, and they used Hamilton's principle to derive the governing differential equations and the boundary conditions for the coupled axial-bending vibration of the rotating beam.
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Dynamic characteristics of rotating pretwisted clamped-clamped beam under thermal stress
Bo Zhang,Yueming Li,Wei-Zhen Lu +2 more
TL;DR: In this article, the effects of thermal stress on the vibration characteristics, buckling limit and critical speed of a rotating pretwisted beam clamped to rigid hub at a stagger angle were investigated.
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Vibration analysis of rotating cantilever beams orienting inward
Yutaek Oh,Hong Hee Yoo +1 more
TL;DR: In this article, a new structural dynamic model for the vibration analysis of rotating cantilever beams orienting inward with a concentrated added mass and setting angle is presented, where a set of hybrid deformation variables is approximated using the Rayleigh-Ritz assumed mode method.