350t自航起重船吊臂结构强度评估及加强方案的模糊评判

Structure Strength Analysis and Fuzzy Evaluation for the Reinforced Plan of 350t Self-propelled Ship's Crane Jib

为对起重臂内部结构进行改进,提高其结构强度。利用MSC.Nastran软件对350t自航起重臂结构在不同工况下进行有限元强度分析。基于模糊综合评判理论,结合船体强度、工艺和重量等因素作为评判参数,按成对比较法和构建满意度函数,对350t自航起重臂结构的三种加强方案进行评判,确定出最优方案。

In order to improve internal structure of crane jib and raise its structural strength, a analysis on finite element strength of 350 t self-propelled ship＇s crane jib under different load has been done. Meanwhile based on basic theory of fuzzy comprehensive evaluation combined factors of hull strength, craftwork and weight etc., by paired comparison method and constructing satisfactory function, three reinforced plans for 350 t -self-propelled ship＇s crane jib are evaluated and the best plan is determined.