Shaft flexibility effects on aeroelastic stability of a rotating bladed disk

Journal Article · Fri Dec 01 00:00:00 EST 1989 · Journal of Propulsion and Power; (USA)

DOI:https://doi.org/10.2514/3.23211· OSTI ID:7153687

Khader, N; Loewy, R ^[1]

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1. Jordan Univ. of Science and Technology, Irbid (Jordan) Rensselaer Polytechnic Institute, Troy, NY (USA)

A comprehensive study of Coriolis forces and shaft flexibility effects on the structural dynamics and aeroelastic stability of a rotating bladed-disk assembly attached to a cantilever, massless, flexible shaft is presented. Analyses were performed for an actual bladed-disk assembly, used as the first stage in the fan of the 'E3' engine. In the structural model, both in-plane and out-of-plane elastic deformation of the bladed-disk assembly were considered relative to their hub, in addition to rigid disk translations and rotations introduced by shaft flexibility. Besides structural coupling between blades (through the flexible disk), additional coupling is introduced through quasisteady aerodynamic loads. Rotational effects are accounted for throughout the work, and some mode shapes for the whole structure are presented at a selected rpm. 14 refs.

• OSTI ID: 7153687
• Journal Information: Journal of Propulsion and Power; (USA), Vol. 5; ISSN 0748-4658
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING
GAS TURBINE ENGINES
TURBINE BLADES
ELASTICITY
AERODYNAMICS
CORIOLIS FORCE
DEFORMATION
MECHANICAL SHAFTS
STABILITY
ENGINES
FLUID MECHANICS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL PROPERTIES
MECHANICS
SHAFTS
TENSILE PROPERTIES
330103* - Internal Combustion Engines- Turbine
420200 - Engineering- Facilities
Equipment
& Techniques