横断面の反りを考慮した船体縦強度理論の実用化に関する研究(第三報)

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This time again, the authors studied on practical application for the analysis, applying the new longitudinal strength of the thin-walled variable cross-section beam taking into consideration of warping in bending. We applied automatic calculation system of the first and second reports (ref. 2,3) to box type, double hull B/C, container, double hull tanker of medium size (med. DHT), VLCC and ULCC with multiple-cell in the cross-section. And total working hours of the system was very short in comparison with those of the conventional system (ref. 1). In this paper, at first, we developed the new system to add some new ideas to conception of the first and second reports, and it was possible to apply to B/C type with isolate-cell and multiple-cell, and to PCC type with multilayer isolate-member and multiple-cell in the cross section. At this time, we economized the structural input datum to apply to interpolated method using spline function. Next, we applied the new system to eight kinds of cross-section and confirmed that the system was operated properly. As it was possible to automatic calculation for a hull girder with different cross-section in lengthwise of ship, the practical application of the new longitudinal strength of a hull girder, based on the effects of warping in vertical and horizontal bending and in torsion on wave, is considered to have reached the first stage.
社団法人日本船舶海洋工学会の論文
2001-03-12