Whistling Instability in Idling Circular Saws

[+] Author and Article Information
C. D. Mote, M. C. Leu

Department of Mechanical Engineering, University of California, Berkeley, Calif. 94720

J. Dyn. Sys., Meas., Control 102(2), 114-122 (Jun 01, 1980) (9 pages) doi:10.1115/1.3149589 History: Received May 13, 1980; Online July 21, 2009


Whistling is a self-excited transverse instability that produces intense noise at a resonant frequency of a circular saw. Experiments were undertaken to examine the noise source dependence upon tooth shape, tooth number, rotation speed and the surrounding air pressure. The source model supported by the data is a self excited fluid-structure instability possibly with a wake oscillation sustained or enhanced by the blade motion.

Copyright © 1980 by ASME
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