DOUBLE HULL TANKERの構造初期計画システムの構築 : その2 2L.BHDを有する大型タンカーの場合

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The authors have already reported an initial structural planning and optimization system for 1L.BHD tankers (double hull tankers with one longitudinal bulkhead between the two side double hulls). In this paper, we show another initial structural planning and optimization system for 2L.BHD tankers (double hull tankers with two longitudinal bulkheads between both side double hulls). The above mentioned two types of ship hulls show different characteristics of strength as they have different structure forms. In usual design processes, scantlings of structural members are decided based on the rules for classification, and numerical analyses such as finite element methods, which take much time for each case. Because many possible cases should be estimated in order to find out the best combination of ship structure's parameters through comparison of their hull steel weight, cost, etc., the calculation time to evaluate an individual case must be reduced to several seconds. In this point of view, a simplified method based on material mechanics that can be performed within seconds is developed, instead of the large scale finite element analysis. Comparison between the result of simplified method and that of FEA shows that the simplified method provides proper structural response. The present system with this simplified method is considered as a very useful tool in planning. Some examples with various combinations of design parameters are also carried out.
社団法人日本船舶海洋工学会の論文
1999-09-04

DOUBLE HULL TANKERの構造初期計画システムの構築 : その2 2L.BHDを有する大型タンカーの場合

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