基于灰靶理论的船舶结构构件贡献度分析

Ship structural component contribution evaluation based on grey target theory

摘要:
目的为了研究结构构件对船舶结构性能的影响，提出了构件贡献度的概念。
方法首先，阐述船舶构件对其结构性能的层次关系，建立从构件到船舶结构性能的映射关系，通过定义构件贡献度来描述结构构件对船舶结构性能的影响程度。然后，采用灰靶理论对船舶构件的贡献度进行定量分析。最后，以小线面双体船（SWATH）为例运用该方法对其进行分析，
结果得到各船舶构件贡献度的统计结果。
结论结果表明，该方法可用于船舶结构方案评估，能为后期船舶结构优化设计提供支持。

Abstract:
Objectives A concept named 'component contribution rate' is proposed to solve problems concerning the influence of ship structure components on ship structure performance.
Methods First, a hierarchical structure is elaborated and mapped from structural components to structural performance. Second, the component contribution rate is defined in order to describe the contribution rate for a component in structural performance to fulfill its structural purpose. Next, the grey target theory is applied to quantify the component contribution rate.
Results Finally, the application of the proposed method is demonstrated through a SWATH case study.
Conclusions This method can be applied in the evaluation of the ship structural schemes, in order to support the optimal design of ship structure.