Digital Twin-Based Model Reconfiguration Method for Ship Design Using NSGA-II

Ship design is a crucial step in ship-building process, and the design method is relatively homogeneous. However, the traditional ship design approaches have long design periods, consuming much manpower and physical resources. Besides, traditional methods take much more time and it could be further upgraded to meet specific demands. With the increasing diversity of ship demands, the ship design model is being paid much attention in recent years. In this paper, a digital twin-based reconfigurable ship design method is proposed. This digital twin- based model contains physical entity, virtual model, interconnection model, digital twin data, as well as service support services. A digital twin-based model of ship is established. Based on such digital twin model, the NSGA-II is utilized to generate an optimal reconfigurable ship design scheme, considering various performance demands. Case study is conducted to validate the reconfigurable ship design method based on digital twin model. The results shows that the NSGA-II method can generate a reconfigurable design solution for different performance demands.