Ship structural component contribution evaluation based on grey target theory

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.

Keywords

• ship structural performance
• components contribution rate
• grey target theory