A hierarchical simulation model for workload analysis of ship block erection process

摘要

In shipbuilding, large blocks are erected and welded in a dry dock to form a ship. Due to limited number of docks, which is major facility constraint in a shipyard, block erection process is typically considered as the bottleneck of the whole shipbuilding process. A complex erection network plan should be established for block erection which indicates the erection orders as well as the schedule of each erection event. Besides, each erection event consists of several sub-processes, which leads to high dependency of block erection on erection network. In this research, a hierarchical simulation model is suggested to precisely predict the workload of block erection considering the workload of each sub-processes included. By applying proposed model in erection network simulation, more accurate workload of block erection could be calculated.