- #1

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Roll angle (Θ) : Θ = Acos( ωt+ φ)------where A is the amplitude of the wave, ω is the frequency and φ is the phase chage.

So what would time be??

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- Thread starter Tone L
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- #1

- 66

- 7

Roll angle (Θ) : Θ = Acos( ωt+ φ)------where A is the amplitude of the wave, ω is the frequency and φ is the phase chage.

So what would time be??

- #2

SteamKing

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The rolling motion of a ship is generally a non-linear phenomenon. For small angles, the rolling motion may be linearized approximately so that it corresponds roughly to simple harmonic motion, like what a pendulum experiences when it is disturbed from the equilibrium position.

Roll angle (Θ) : Θ = Acos( ωt+ φ)------where A is the amplitude of the wave, ω is the frequency and φ is the phase chage.

So what would time be??

I don't know where you obtained the equation in your post, but A is generally not the amplitude of the incident wave. What this equation is telling you is that the roll angle of the vessel is periodic in time, with a certain amplitude of roll, frequency, and phase w.r.t. some other datum.

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