Transverse Oscillations of a Vertical Pile in Waves

[+] Author and Article Information
F. Angrilli, V. Cossalter

Institute of Applied Mechanics, Padua University, 35100 Padua, Italy

J. Fluids Eng 104(1), 46-52 (Mar 01, 1982) (7 pages) doi:10.1115/1.3240851 History: Received March 18, 1980; Online October 26, 2009


A cantilevered pile, flexible only in the transverse direction, has been submitted to wave action. It has been found that resonance transverse vibrations, with natural frequency fn , are induced by eddies shedding in waves having frequency fw = 1, 1/2, 1/3, 1/4 fn . A lock-in effect has been observed within the range of 0.9 fn ≤ fw ≤ 1.1 fn . Results of a simple mathematical model find reasonable support in the experiments.

Copyright © 1982 by ASME
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