On Redesign of Ship Structures Locally by Variational Formulation

概要

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The complexity of ship structure analysis may result in a possibility that certain parts of the structure may not be optimum or may even violate the stipulated rule requirements. Carrying out a global analysis to bring these objectives under rule requirements is prohibitively expensive and time consuming also. The concept of zoom analysis can effectively be utilized to isolate these critical structural areas and then optimizing it for the required criterion could be thought of as a viable solution. Here a variational approach is given by zooming the particular region of the ship structure first and optimizing it for a particular criterion. The transverse section of a typical Bulk Carrier is taken as an example and optimization is carried out with respect to the design of maximum value of von-Mises stress over selected regions of the frame. The results show a gradual reduction of stress levels in the critical regions after the optimization through this method.
社団法人日本船舶海洋工学会の論文
2000-03-25