Previous attempts to solve for vibration of non-uniform hull girder have used Finite Element Analysis (FEA).
The coupled heave and pitch motions of a simplified non-uniform ship hull floating on a still water surface and subjected to a moving load have been investigated.
Jayne Heard at Hull Royal Infirmary, Hull, UK.
A number of other artifacts, including a damaged 10.5 cm shell case, an iron rivet from the hull, and uniforms were also recovered and are held in the Australian War Memorial.
The paper deals with the self-propulsion problem, i.e. the solution of the flow around the hull that advances at uniform speed due to the action of its own propeller.
He showed that for a periodic integro-differential equation, uniform stability and stability under disturbances from hull are equivalent.
The time domain code is coupled with a Finite Element Model and the ship hull is modelled as a non-uniform Timoshenko beam.
Interaction with the ship hull is taken into account in the form of given non-uniform velocity field of the ship wake.
Only a few uniform beam modes are necessary to generate the non-uniform beam modeshape and a convergent hull girder frequency.
consists of at most one element, where D is the closed convex hull of D. The following two lemmas are proved in the absence of uniform convexity, and they are needed in Section 3.2.
The distortions of the non-uniform modeshapes have been studied in the light of the loading conditions of the hull.
