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The General Model of Free Vibrations of Mistuned Bladed Discs, Part I: Theory

✍ Scribed by R. Rzadkowski

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
289 KB
Volume
173
Category
Article
ISSN
0022-460X

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✦ Synopsis

This paper is divided into two parts. The author's purpose in Part I is to formulate the equations of motion describing the linear dynamics of bladed disc assemblies. The problem of calculating the natural frequencies of a rotating bladed disk is solved by the Ritz method. A consistent second order moderately thick plate theory is used for the disc. The blade is treated by a beam theory and includes shear deformation, rotary inertia effects, blade pretwist, centrifugal effects, and warping as a function of bending and torsion. The numerical results for tuned and mistuned bladed discs with the blades of complex geometry is the subject of Part II.

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