バルクキャリヤの構造解析プログラム(BCSTAP)

概要

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A computer program has been developed by NK (NIPPON KAIJI KYOKAI) for structural analysis of hold parts of bulk carriers. This is based on the concept of the finite element method applying beam elements and stiffened rectangular plate elements, the formers are assumed to resist lateral forces and the latters in-plane forces, respectively: the double bottom is regarded as a sandwich-grillage structure consisting of grillage-beam elements and sandwich-plate elements, and the other constructions, e.g., bilge hopper, topside tank, side shell, etc., are regarded as combined structures of beam elements and plate elements. This program system is effective in all the structural patterns of recent bulk carriers, and in order to save the manual works of input data, the model of the hull construction and nodal loads are automatically generated from intuitive data of the drawings of initial hull design. As results of computation, the stresses and forces are obtained, and the heavily stressed elements are checked if they exceed an allowable stress or a certain given value. Stress distributions can be obtained in the form of diagrams by line printers and plotters, if required. This program system will be used not only for structural analysis but also for inspection of scantling at the classification society.
財団法人日本海事協会の論文