A Bode plot of the hydrodynamic function for a rectangular beam.
(a) A block diagram of the fluid loaded structure showing the feedback effect of fluid loading on the structure’s displacement. (b) An equivalent loop that is a product of the in vacuo accelerance and the hydrodynamic function.
A Bode plot of the fluid loaded response (solid) as a function of the loop gain (dashed). The loop-gain is the product of the in vacuo accelerance (dash dot) and the hydrodynamic function (dotted).
The loop gain and closed-loop system for a cantilever with in vacuo natural frequency in air and in water: in air (solid), in air (dashed); in water (dot dash), in water (dotted).
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