Author Type

Graduate Student

Date of Award

1979

Document Type

Thesis

Publication Status

Version of Record

Submission Date

October 2026

Abstract

A linear differential equation of motion to describe the fluid-induced vibrations of a towed flexible cylinder, with applications toward towed array system, is developed. The equation is explored for its free vibration characteristics with the aid of a computer program. The behavior of the locus of the several lowest eigenfrequencies, as system parameters were varied revealed the basic dependence of the system on these parameters. It is shown that for various combinations of system parameters, the system may be subject to buckling or oscillatory instabilities in its lower flexural modes. It was found that (1) longer cylinders are more susceptible to oscillatory instabilities than are shorter cylinders but are less susceptible to buckling, (2) tension due to skin friction drag stabilizes the system, and (3) the tail of the cylinder acts as an initiator of unstable motions. Nomographs are presented to predict natural frequencies for various combinations of system parameters.

Extent

101 p.

Comments

Thesis (M.S.)--Florida Atlantic University, 1979.|Thesis (M.S.)--Florida Atlantic University, 1979.

Identifier

FADT13978

Format

pdf

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