This research was done to study the effect of sea severity on the vertical ship
responses like heave and pitch. Model testing of a 175m moored container ship with zero
heading speed was done for different sea states varying from very rough to very high
seas. Transfer functions were extracted using Volterra model which constitutes both
linear and quadratic part. The experimental linear transfer functions were calculated
using Volterra linear model and were compared with linear transfer function from the
hydrodynamic theory. Experimental second order transfer functions were also extracted
using Volterra quadratic model and their behavior was studied for different sea states.
After the extraction of linear and second order transfer functions total responses were
reconstructed and compared with the measured responses. This also helped to investigate
the contribution of second order part to the total vertical ship responses.
In the last stage of the research a new semi- empirical method was developed
called as ‘UNIOM’ for the prediction of the responses. Laboratory input waves and
theoretical LTFs were used for the simulation of ship response and these were compared
with measured responses.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-3214 |
| Date | 15 May 2009 |
| Creators | Rajendran, Suresh |
| Contributors | Kim, Cheung H |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | electronic, application/pdf, born digital |
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