Disassembly Modeling in Ship Maintenance with Consideration of the Influence of Fasteners

Disassembly sequence planning is an important part of maintenance, and disassembly modeling is the premise of sequence planning. Due to a large number of parts and complex structure, it is difficult to model the disassembly process for ship maintenance. In this paper, we proposed a disassembly modeling method with consideration of the relationship between the general parts and fasteners. At first, we analyzed the disassembly rules of fasteners and the constraints of fasteners, determined the hidden priority relation of part, and established the fastener relation table. At the same time, the relation table of fasteners and the interference matrix of parts were synthesized, and the constraint interference matrix considering the influence of fasteners was established. Based on this proposed modeling method, the judgment criterion of part disassembly and the disassembly rule of fasteners were put forward, and the effectiveness and superiority of the method were illustrated with an application case.