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Original Articles

Ship stability via the Mathieu equation

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Pages 139-167 | Received 12 Jul 1988, Published online: 27 Mar 2007
 

Abstract

The roll motion and stability of a typical fishing vessel in British Columbia have been investigated using the Mathieu differential equation. The response of the system has been obtained for regular sinusoidal waves of various frequencies and amplitudes. Three cases, undamped, linearly and non-linearly damped have been studied and the corresponding Mathieu charts calculated. The effect of damping on the system's response and phase portrait are shown.

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