IMPACT LOADING OF SUBMARINE HULLS
MASSACHUSETTS UNIV AMHERST SCHOOL OF ENGINEERING
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Following Flugges exact derivation for the buckling of cylindrical shells, the equations of motion for dynamic loading of cylindrical shells subjected to hydrostatic and axial pressure have been formulated. The equations of motion are applicable for long, short, or thick shells, and are very useful in calculating deflections and stresses when the impact loads are applied to comparatively small regions of the shell. The normal mode theory was utilized to provide dynamic solutions for the equations of motion. Solutions are also provided for the Timoshenko-type theory, and comparisons are made between the two theories by considering and neglecting in-plane inertia forces. Comparison of results is exemplified by a numerical example which considers the effect of hydrostatic pressure on the dynamic response of a shell simply supported by a thin diaphragm and subjected to a localized unit radial impulse.
- Submarine Engineering