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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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A Conceptual Flutter Analysis of a Packet of Vanes Using a Mass-Spring Model
TL;DR: In this article, the authors analyzed the linear aeroelastic stability of a simplified mass-spring model representing the basic dynamics of a sector of Na airfoils and showed that the expected stabilizing effect due to the packets may be negligible, depending on the relative strength of the aerodynamic forces and the stiffness of the lower platform.
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Failure investigation of an auxiliary steam turbine
TL;DR: In this paper, the results of failure investigation of an auxiliary steam turbine in a power plant were presented, where fractures were occurred at the lacing wires in the L1 blade cascade.
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Prediction of vibration and instability of rotating damped beams with an elastically restrained root
Shueei Muh Lin,Sen Yung Lee +1 more
TL;DR: In this article, the exact solution for the vibration of a rotating nonuniform beam with the frequency-dependent structural damping, the equivalent viscous damping and the root damping is derived.
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Shaft flexibility effects on the forced response of a bladed-disk assembly
Naim Khader,R. G. Loewy +1 more
TL;DR: In this article, a model analysis approach is used to study the forced response of an actual flexible bladed-disk-shaft system, in which both in-plane and out-of-plane flexible deformations of the disk assembly are considered, in addition to its rigid-body translations and rotations, resulting from the bending of the supporting flexible shaft in two orthogonal planes.
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Dynamic response of coupled shaft torsion and blade bending in rotor blade system
TL;DR: In this paper, a rotor-bladed system with a pre-twisted blade attached to a rigid disk driven by a shaft is developed using the Lagrange equation in conjunction with the assumed mode method to discretize the blade deformation.