INTEGRATED DESIGN AND PRODUCTION PLANNING FOR SHIP BLOCK ASSEMBLY AND CONSTRUCTION

摘要

The block assembly process is a critical source of optimization in ship construction. Advanced shipbuilding companies concurrently utilize diverse manufacturing facilities, machines and production methods to assemble blocks of multiple ships at the same time, in different shops or across the world. To increase competitiveness and productivity, shipbuilders must rely on flexibility and accuracy of their production planning and scheduling systems. Key considerations are shop and resource management, on-time completion and availability of sequenced sub- assemblies, and readiness of materials to be processed. However, to really optimize the process, the shipbuilder must integrate these considerations directly into the design process. This paper addresses the utilization of the 3D Shipbuilding CAD system, starting with the design phase and continuing through final construction, to manage the collaboration with materials availability, bill of materials management, and scheduling of the block assembly construction process. It will discuss how an integrated system concept can drive both design engineering and production from a single CAD model, and manage progress and workload of complex production facilities like panel or curved block assembly shops that have to handle mixed ship types. Additionally, the paper will look at how a design-to-production CAD model can provide better ways to optimize production accuracy through weight calculation and management, and measurement of the as-built assembly.