Flapwise bending vibration analysis of rotating cantilever beams considering shear and rotary inertial effects

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 21, Issue 10, 1997, pp.1580-1588
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-A.1997.21.10.1580

Title & Authors

Flapwise bending vibration analysis of rotating cantilever beams considering shear and rotary inertial effects

Shin, Sang-Ha; Yoo, Hong-Hui;

Shin, Sang-Ha; Yoo, Hong-Hui;

Abstract

A modeling method for the flapwise bending vibration of a rotating cantilever beam which has small slenderness ratio is presented in this paper. It is shown that as the slenderness ratio decreases the shear and rotary inertia effects increase. Such effects become critical for the accurate estimation of the natural frequencies and modeshapes, especially higher frequencies and modes, as the angular speed increases. It is also shown that the flapwise bending natural frequencies are higher than the chordwise bending natural frequencies. The discrepancy between first natural frequencies are especially significant when the hub radius ratio is small.

Keywords

Rotating Cantilever Beams;Natural Frequency Variation;Shear Effect;Rotary Inertia Effect;Slenderness Ratio;Flapwise Bending Vibration;Chordwise Bending Vibration;

Language

Korean

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