Dynamics of a Rigid Ship

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Journal Title
Journal ISSN
Volume Title
School of Engineering | D4 Julkaistu kehittämis- tai tutkimusraportti tai -selvitys
Date
2017
Major/Subject
Mcode
Degree programme
Language
en
Pages
147 + app. 6
Series
Aalto University publication series SCIENCE + TECHNOLOGY, 2/2017
Abstract
The approach to ship dynamics presented in the book makes it possible to deal with the seemingly different problems such as ship maneuvering, sea-keeping and dynamic stability using the same unified mathematical model. Motion dynamics of a ship regarded as a rigid body in a general motion with six-degree-of-freedom is considered. The relation of non-linearities of the applied sub-models to the physical phenomena associated with the ship behavior is discussed. Surface wave theory is presented. Non-linearities associated with surface waves are discussed. Realization of the unified mathematical model in a form of simulation tool, called LaiDyn, is discussed and examples of its applications are shown. Mathematical model for assessing internal hull girder loads is presented briefly. An un-symmetry of internal loads, visible as different maximum values of sagging and hogging, is presented and the origins of it are discussed.
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Keywords
ship dynamics, wave loads, sea-keeping, maneuvering
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