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UBC Theses and Dissertations

Slamming motions of a rectangular-section barge model in harmonic waves Worden, Douglas Neil


The work presented in this thesis concerns the theoretical analysis of the motion of floating rectangular cross-section bodies in single-frequency harmonic waves. When a conventional laterally symmetric ship is modelled by such a body, the computation of strip-theory coefficients (derived from the solution of Laplace's equation for the fluid surrounding the ship) is simplified. This technique is used here to model a typical barge, with actual cross-sections very close to the assumed rectangular shapes. In particular, slamming motions are investigated using two conventional linear slamming criteria. The rectangular section model is also applied to the investigation of slamming motions by use of 'quasi-harmonic' slamming criteria, which are developed from an updating technique used with conventional strip theory coefficients. Results are presented for an example.

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