Structural Topology Design of Container Ship Based on Knowledge-Based Engineering and Level Set Method

摘要

Knowledge-Based Engineering(KBE) is introduced into the ship structural design in this paper. From the implementation of KBE, the design solutions for both Rules Design Method(RDM) and Interpolation Design Method(IDM) are generated. The corresponding Finite Element(FE) models are generated. Topological design of the longitudinal structures is studied where the Gaussian Process(GP) is employed to build the surrogate model for FE analysis. Multi-objective optimization methods inspired by Pareto Front are used to reduce the design tank weight and outer surface area simultaneously. Additionally, an enhanced Level Set Method(LSM) which employs implicit algorithm is applied to the topological design of typical bracket plate which is used extensively in ship structures. Two different sets of boundary conditions are considered. The proposed methods show satisfactory efficiency and accuracy.